Applications of Nanoclay in Materials and Formulations: Dispersion Mechanisms, Performance Enhancement, and Product Selection
Applications of Nanoclay in Materials and Formulations: Dispersion Mechanisms, Performance Enhancement, and Product Selection
What is Nanoclay?
Nanoclay generally refers to clay minerals and their modified derivatives that exist in a system in nanoscale sheet/tubular/fibrous forms, with at least one dimension reaching the nanoscale (e.g., a single layer of a layered silicate can be close to 1 nm thick). In formulation contexts, “nanoclay” emphasizes the morphology and effects after exfoliation/dispersion into nanostructures, rather than the particle size of the as-supplied powder.
Nanoclay can be roughly classified into three categories by morphology:
Morphology Type | Representative Materials | Core Structural Features | Typical Advantage Keywords | Common Application Directions |
Layered platelet type (most typical) | Montmorillonite (MMT), synthetic clays (synthetic lithium magnesium silicate / synthetic hectorite; smectite-type disc-like nanoclays; typical diameter ~25–30 nm, thickness ~1 nm), vermiculite (Vermiculite) | “Book/page-like layered” structure; can be intercalated and exfoliated | Barrier, reinforcement, modifiable | Polymer nanocomposites; barrier coatings/films; anticorrosion barriers; certain adsorption applications |
Tubular / hollow type | Halloysite nanotubes (Halloysite nanotubes, HNTs) | Common naturally occurring hollow nanotubes; can be loaded | Loading, controlled release, carrier | Drug delivery/controlled release; catalyst loading; adsorption; antibacterial composites |
Fibrous / rod-like type | Palygorskite / Attapulgite; Sepiolite | Fibrous network; readily forms a 3D framework | Thixotropy, thickening, anti-settling | Rheology control in coatings/inks; suspension anti-settling; slurry stabilization; certain adsorption applications |
Notes:
- Bentonite is often a montmorillonite-rich clay and is a common commercial name within layered platelet systems.
- Nanofibrous clays (palygorskite, sepiolite) are often used as next-generation rheology additives in water-based systems (e.g., drilling fluids/suspensions), contributing thixotropy, thickening, and yield stress.
What Are the “Functions and Roles” of Nanoclay in Essence?
Nanoclay works well essentially due to four keywords (A–D):
Core Source | Typical Applications | Key Mechanistic Points | Main Functions / Roles |
A. High aspect ratio + high specific surface area → nano-skeleton / nano-barrier | Polymer nanocomposites (PA/PP/PLA/epoxy/PU), barrier films and anticorrosion coatings, reinforced adhesives/sealants | High-aspect-ratio platelets/fibers build a “tortuous diffusion path” and load-bearing framework within the matrix; when interfacial bonding is good, load is efficiently transferred | Improved barrier properties (O₂/water vapor/solvents); increased strength/modulus; improved dimensional stability and creep resistance |
B. Surface charge + CEC (cation exchange capacity) → assembly/modification/adsorption | Water-treatment adsorption (heavy metals/dyes/organic pollutants), solid-phase extraction/purification; preparation of organoclays for thixotropy and resin compatibility in solvent-based coatings; surface-functionalized carriers | Negatively charged layer surfaces and interlayer exchangeable ions (Na⁺/Ca²⁺) enable ion exchange and adsorption; quaternary ammonium intercalation / silane coupling enables organophilization and functionalization | Adsorption and pollutant removal; targeted surface modification/functionalization; organoclays for improved compatibility and thixotropy/anti-settling in organic systems |
C. Colloidal and rheological behavior → thickening, thixotropy, suspension | Thixotropy and anti-sagging in waterborne coatings/inks; anti-settling in slurries/suspensions; 3D-printing inks (shear-thinning + thixotropic recovery); hydrogels/injectable systems | Synthetic clays/fibrous clays form “house-of-cards” or fibrous network structures in water, generating yield stress and thixotropic recovery; pH/salinity strongly affect network stability | Thickening and thixotropy; improved anti-sagging and application properties; suspension anti-settling and storage stability; constructing printable/injectable rheology windows |
D. Thermal/combustion behavior + inorganic barrier effect → synergistic flame retardancy and heat resistance | Halogen-free flame-retardant plastics and coatings (synergy with APP/ATH/MDH), heat-resistant modified composites, smoke suppression and char-layer reinforcement systems | Inorganic platelets/framework form a barrier during combustion and promote densification of the char layer; synergy with P–N flame retardants and metal hydroxides reduces release of flammable volatiles and dripping | Synergistic flame retardancy (smoke suppression, anti-dripping, reinforced char barrier); improved heat resistance and thermal stability (system-dependent); improved overall fire performance metrics |
Notes:
- Surface charge and CEC differ significantly among clay minerals. Smectites (e.g., MMT) typically have negatively charged basal surfaces and relatively high CEC. For HNT, inner and outer surfaces may show different charge behavior influenced by pH; HNT is often described as having a relatively positive inner lumen (Al–OH) and a relatively negative outer surface (Si–OH), and its surface charge/zeta potential varies with pH and ionic strength. Kaolinite/halloysite generally have lower CEC, so functionalization routes should be chosen according to mineral type.
- Nanoclay is often used as a synergist for flame retardancy/smoke suppression/char reinforcement. In halogen-free intumescent systems, a small amount of OMMT (e.g., ~3 wt%) can significantly improve the LOI of APP/IFR-PP and help pass UL-94 ratings (performance depends on the specific formulation). It typically needs to be combined with P–N systems or metal hydroxides, and may also increase viscosity and change the processing window.
- Quaternary ammonium intercalants used in organo-modified clays have a thermal decomposition window; for high-temperature processing (e.g., certain engineering plastics), risks such as volatilization/discoloration/performance fluctuations should be evaluated.
Mechanism of Action: Intercalation, Exfoliation, Modification, and “Dispersion” Are the Core
In materials/formulations, nanoclay performance depends heavily on its morphology in the system:
- Agglomerated (poor effect): behaves like powder particles; limited improvement; may cause embrittlement/increased haze.
- Intercalated: polymer chains enter the interlayer galleries; properties improve noticeably.
- Exfoliated: single-layer platelets are dispersed; small additions can deliver large reinforcement.
- Intercalation/exfoliation mechanisms mainly apply to layered, swellable clays (e.g., MMT). Fibrous clays (sepiolite/palygorskite) rely more on fibrous network architecture and interfacial interactions, while HNT relies more on lumen loading and surface modification.
- Note: complete exfoliation is not always the easiest to process. The more fully exfoliated the system, the more likely viscosity/yield stress will rise, narrowing the processing window. Some toughness/transparency/appearance defects may worsen with excessive exfoliation or improper dispersion (e.g., haze, stress concentration).
Common implementation routes include:
- Ion exchange / intercalation modification: use quaternary ammonium salts, etc., to turn hydrophilic interlayers more organophilic, facilitating entry into organic resins.
- Silane coupling / titanate coupling: enhance interfacial bonding with resins.
- Solution blending / melt shear / in situ polymerization: “break apart” clay and lock in the morphology.
- pH / salt / solvent control: especially in aqueous systems, electrolytes strongly affect colloidal networks and stability.
Typical Applications in Chemical Reagents and Scientific Research
Application Area | Main Targets / Pain Points | Recommended Nanoclay / Material Types | Common Systems / Combination Examples | Selection and Use Notes |
1. Polymer nanocomposites | Barrier (O₂/H₂O), reinforcement, heat and wear resistance, crack resistance | Layered: MMT/organo-MMT; Fibrous: sepiolite/palygorskite (rubber) | MMT/organo-MMT + PA6, PP, PET, PLA; organoclay + epoxy; sepiolite/palygorskite + rubber | Key factors are dispersion morphology (intercalated/exfoliated) and interfacial bonding; nonpolar resins often require compatibilization/modification strategies |
2. Coatings/inks/adhesives/sealants | Thixotropic thickening, anti-sagging, anti-settling, barrier anticorrosion | Waterborne: Laponite/sepiolite; Solvent/solvent-free: organoclay; Anticorrosion: layered clay synergy | Waterborne: Laponite/sepiolite for thixotropy and anti-settling; solvent-based: organoclay thixotropy; anticorrosion coatings: layered barrier + synergy with zinc powder/phosphates | For waterborne systems: watch pH/salt sensitivity and thixotropic recovery; for solvent systems: match solvent polarity and use proper activation/dispersion processes |
3. Environment and separation | Adsorption of heavy metals/dyes/organics; anti-fouling and selectivity in membranes | MMT/pillared or activated clays; sepiolite; surface-modified clays; HNT | Pb²⁺/Cd²⁺/Cu²⁺ adsorption; dye/hydrophobic organics adsorption (enhanced via modification); mixed-matrix membranes (MMM) for improved performance | Adsorption: focus on CEC, surface charge, pH and competing ions; membranes: focus on dispersion and interfacial defect control |
4. Catalysis and supports | Solid-acid catalysis, immobilized catalysis, photocatalysis synergy, recyclability | Acid-activated clay / Montmorillonite K-10 / pillared clay; HNT metal loading; composites with TiO₂/ZnO | Acid-activated clay for esterification/alkylation; HNT loading Pd/Au/Fe₃O₄ for catalysis/magnetic recovery; TiO₂/ZnO + clay for improved dispersion stability | Catalysis: focus on surface area/porosity/acid sites and metal loading stability; magnetic recovery: focus on robust composites and reusability |
5. Biomedical / biomaterials | Drug loading & controlled release, injectable/3D-printable hydrogels, antibacterial | HNT (drug loading); Laponite (hydrogel reinforcement & shear-thinning); composites with Ag⁺/Zn²⁺ or quaternary ammonium for antibacterial | HNT lumen loading of small molecules/proteins/antibacterials; Laponite strengthens hydrogels and provides shear-thinning; Ag⁺/Zn²⁺/quaternary ammonium synergistic antibacterial | Consider biocompatibility and impurity/endotoxin risks (depending on application); release profiles and antibacterial durability should be verified |
6. 3D printing and functional fluids | Shear-thinning + thixotropic recovery; holds shape after stopping flow | Laponite/sepiolite (rheology framework) | “Printable ink” rheology design: flows under extrusion, rapidly solidifies upon rest | Key is yield stress + recovery speed; salt/pH/solids content define the printing window and collapse risk |
Selection and Use Guidelines
1. Is the system aqueous or organic?
- Aqueous rheology: prioritize Laponite, sepiolite/palygorskite
- Organic resin dispersion: prioritize organo-MMT (quaternary ammonium modified) + coupling agents/high-shear dispersion
2. Ionic strength / salt content (aqueous systems are highly sensitive)
- Electrolytes may cause clay colloids to collapse/flocculate, leading to uncontrolled rheology
3. Moisture content and drying
- Clays are hygroscopic; moisture can affect resin reactions, interfaces, and bubble/defect formation
4. Dispersion methods
- Ultrasonication/high-speed shear/three-roll milling/ball milling/melt extrusion, etc., strongly influence the final morphology
5. Recommended characterization
- XRD (interlayer spacing changes), TEM/SEM (exfoliation and agglomeration), TGA (modification level/thermal stability), FTIR (functional groups), BET (surface area), Zeta potential (dispersion stability), rheology curves (thixotropy and yield stress)
- Note: In polymer nanocomposites, weakening/disappearance of the d001 peak may result from exfoliation, but may also arise from disordering/orientation distribution changes; therefore, morphology is usually determined by XRD + TEM together.
Aladdin Related Product List
Nanoclay and Modified Nanoclay Product List (Core materials, derivatives/modified products, and thixotropes)
Category | CAS No. | Aladdin Cat. No. | Product Name | Specification or Purity | Key Features or Functions |
Core nanoclay material | 1302-78-9 | Nanoclay, hydrophilic bentonite | – | Hydrophilic layered clay; for thickening/thixotropy in water-based systems or hydrophilic matrices, suspension anti-settling, barrier and mechanical reinforcement; also a base material for further intercalation/modification | |
Core nanoclay material | 53320-86-8 | Sodium magnesium lithium silicate | ≥98% | Synthetic nanoclay (Laponite-type); forms a network in water, providing shear-thinning/thixotropic recovery/suspension stability; suitable for hydrogels, coating rheology, and 3D-printing inks | |
Core nanoclay material | 1332-58-7 | Halloysite nanoclay | – | Tubular/hollow structure; suitable for loading actives (controlled release/antibacterial/catalysis) and composite reinforcement; also widely used in adsorption/carrier research | |
Core nanoclay material | 1318-93-0 | Montmorillonite | Pharmaceutical grade, PharmPure™ | Classic layered clay; used for adsorption, suspending aid, stabilization, and composite reinforcement; pharmaceutical grade is suitable for impurity-sensitive systems | |
Core nanoclay material | 63800-37-3 | Sepiolite powder | ≥400 mesh | Fibrous network structure; provides thixotropic thickening and anti-settling, with some adsorption capacity; finer mesh is more favorable for dispersion | |
Core nanoclay material | 63800-37-3 | Sepiolite powder | ≥200 mesh | General-purpose thixotrope/anti-settling and adsorptive filler; coarser particle size may suit some high-loading systems (select according to dispersion and surface requirements) | |
Derivative/modified clay (adsorption/catalysis) | 139264-88-3 | Montmorillonite (aluminum-pillared clay) | surface area 250 m²/g | More stable pore structure and higher surface area after pillaring; used for adsorption/catalyst supports/solid-acid research; strong differentiation | |
Derivative/modified clay (adsorption/catalysis) | 1318-93-0 | M758183 | Montmorillonite K-10 | Powder | Commonly used for adsorption and solid-acid catalysis (organic synthesis, purification, supports); can also serve as an “activated clay” reference material |
Surface-modified nanoclay | – | Nanoclay, surface modified | contains 35–45 wt.% dimethyl dialkyl (C14–C18) amine | Amine organophilization; improves organophilicity and resin compatibility, promotes intercalated/exfoliated dispersion, enhances mechanical/barrier/heat resistance | |
Surface-modified nanoclay | – | Nanoclay, surface modified | contains 25–30 wt.% trimethyl stearyl ammonium | Typical quaternary ammonium intercalated organoclay; for thixotropy, anti-settling, barrier reinforcement, and improved compatibility in resin systems | |
Surface-modified nanoclay | – | Nanoclay, surface modified | contains 15–35 wt.% octadecylamine, 0.5–5 wt.% aminopropyltriethoxysilane | Dual modification (amine + silane); combines organophilic dispersion with interfacial bonding, suitable for interface reinforcement and improved water resistance/durability | |
Organoclay thixotrope | 1302-78-9 | Bentonite | Bentone SD-2, suitable for medium to high polarity solvents | Solvent-based thixotrope; improves thickening, anti-sagging, anti-settling, and suspension stability (prioritize for medium/high polarity systems) | |
Organoclay thixotrope | 1302-78-9 | Bentonite (bentonite clay) | BENTONE 38, used in polar solvent systems | For polar solvent/resin systems; strong thixotropy and anti-settling; suitable for high-polarity formulations | |
Organoclay thixotrope | 1302-78-9 | Bentonite (bentonite clay) | BENTONE 27, used in medium to high polarity solvents | General for medium/high polarity systems; used for anti-settling, anti-sagging, and application rheology optimization | |
Organoclay thixotrope | 1302-78-9 | Bentonite (bentonite clay) | Bentone SD-1, suitable for medium to low polarity solvents | Thixotrope for medium/low polarity systems; used for thickening, anti-settling, and anti-sagging (better matched to low-polarity solvents) |
Reference Clays / Mineral Fillers (Non-nano)
Category | CAS No. | Aladdin Cat. No. | Product Name | Specification or Purity | Key Features or Functions |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K100133 | Ultrafine kaolin | ≤2.5 µm, calcined | Inorganic filler/reference clay: improves stiffness, heat resistance, dimensional stability, and coating film density; ultrafine grade favors reinforcement and densification |
Reference clay/mineral filler (non-nano) | 1332-58-7 | Ultrafine kaolin | 3000 mesh (5 µm), calcined | Calcined kaolin filler; for reinforcement and wear resistance in coatings/plastics/rubber; stabilizes rheology | |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K100131 | Ultrafine kaolin | >1250 mesh (11 µm), calcined | General-purpose calcined kaolin; for filling/reinforcement, heat resistance, and dimensional stability |
Reference clay/mineral filler (non-nano) | 1332-58-7 | Kaolin | Pharmaceutical grade, PharmPure™ | Pharmaceutical-grade kaolin; for adsorption, carriers, flow aid/suspending aid where higher purity sensitivity applies | |
Reference clay/mineral filler (non-nano) | 1332-58-7 | Kaolin | Anhydrous grade | Low moisture; suitable for water-sensitive systems (certain resins/reaction systems); used as dry filler/adsorption carrier | |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K299133 | Kaolin | Filler grade, kaolinite content ≥80% | Clear composition and good reproducibility; used for filling/reinforcement/rheology control/cost optimization |
Reference clay/mineral filler (non-nano) | 1332-58-7 | Kaolin | Filler grade, whiteness ≥85% | High whiteness; suitable for coatings/plastics requiring good appearance while providing filling performance | |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K299130 | Kaolin | Filler grade, whiteness ≥75% | Balanced whiteness and cost-effectiveness; general filler/reference material |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K299131 | Kaolin | Filler grade, whiteness ≥65% | General filler; for base formulations in coatings/plastics/rubber, etc. |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K299132 | Kaolin | Filler grade, sedimentation volume ≥3 ml/g | Sedimentation volume helps evaluate suspension/dispersion characteristics; used for anti-settling and rheology selection |
Reference clay/mineral filler (non-nano) | 1332-58-7 | K431904 | Kaolin | Heavy, powder | Heavy filling and densification; used for filling, flow, and thixotropy window tuning (adjust per system) |
Reference clay/mineral filler (non-nano) | 1318-00-9 | V302378 | Vermiculite | 20–40 mesh | Layered mineral; used for thermal insulation, barrier, adsorption, and filling; can also serve as a reference for clay/nanosheet systems |
Nanoclay Support and Related Product List
Category | CAS No. | Aladdin Cat. No. | Product Name | Specification or Purity | Key Features or Functions |
Synergistic additives (flame retardancy / inorganic functional fillers) | 68333-79-9 | Ammonium polyphosphate (APP) | n ≥1500 | Halogen-free P–N flame retardant; often synergistic with nanoclay (barrier/char formation), improving flame retardancy, smoke suppression, and anti-dripping | |
Synergistic additives (flame retardancy / inorganic functional fillers) | 68333-79-9 | Ammonium polyphosphate (APP) | n ≥1000 | Degree of polymerization affects water resistance/processing/system compatibility; used as a main flame retardant or in synergistic systems | |
Synergistic additives (flame retardancy / inorganic functional fillers) | 21645-51-2 | Aluminum hydroxide | For preparing alumina | Common halogen-free flame-retardant filler; synergy with nanoclay can improve flame retardancy and mechanical/barrier performance (formulation-dependent) | |
Synergistic additives (flame retardancy / inorganic functional fillers) | 1309-42-8 | Magnesium hydroxide | Ultrapure, ≥99% (KT) | Halogen-free flame-retardant filler; higher decomposition temperature suits higher processing temperatures; can form synergistic barriers with clays | |
Synergistic additives (flame retardancy / inorganic functional fillers) | 1314-13-2 | Zinc oxide | Ph.Eur, suitable for analysis, ACS, premium grade | Functional filler: antibacterial/UV shielding/filler; can be compounded with nanoclay to improve dispersion and durability | |
Synergistic additives (flame retardancy / inorganic functional fillers) | 13463-67-7 | T431947 | Titanium dioxide (IV) | Premium grade, ≥99% | Functional filler: pigment/UV shielding/photocatalysis; compounding with clay may help dispersion stability and barrier performance (system-dependent) |
Clay activation / ion-exchange basic reagents | 1310-73-2 | S111498 | Sodium hydroxide | Premium reagent, ≥96% | Alkali activation / pH adjustment; used to tune clay dispersion stability and surface charge; in some systems used to assist “sodium activation/activation” |
Clay activation / ion-exchange basic reagents | 497-19-8 | Sodium carbonate | Anhydrous, premium reagent, suitable for analysis | Commonly used for bentonite “sodium activation/ion exchange” and pH adjustment; affects swelling and dispersibility (widely used in clay treatment) | |
Clay activation / ion-exchange basic reagents | 7647-01-0 | H485680 | Fuming hydrochloric acid 37% (precursor regulated) | Premium reagent, suitable for analysis, max. 0.001 ppm Hg | Acid activation/impurity removal/pH adjustment; for clay acid treatment and surface activation (ensure compliance and safety) |
Clay activation / ion-exchange basic reagents | 7664-93-9 | S485807 | Sulfuric acid (precursor regulated) | Premium reagent, suitable for analysis, ≥98% | Strong-acid activation; can increase surface area/acid sites for some clays (ensure safety and compliance) |
Solvents for dispersion / intercalation studies | 68-12-2 | N,N-Dimethylformamide (DMF) | Anhydrous, ≥99.8% | Polar solvent; commonly used for polymer/nanomaterial dispersion and composite preparation (anhydrous grade is preferable for water-sensitive systems) | |
Solvents for dispersion / intercalation studies | 872-50-4 | N-Methyl-2-pyrrolidone (NMP) | Anhydrous, ≥99.5% | High-boiling polar solvent; used for polymer dissolution, nanomaterial dispersion, and membrane/coating preparation | |
Solvents for dispersion / intercalation studies | 67-68-5 | Dimethyl sulfoxide (DMSO) | Pharmaceutical grade, PharmPure™ | Polar solvent; used for dissolution/dispersion and preparation of surfactant solutions; pharmaceutical grade suits impurity-sensitive applications | |
Clay modification reagents (quaternary ammonium / intercalation templates) | 1119-94-4 | Dodecyltrimethylammonium bromide (DTAB) | BioReagent Plus, ≥99% | Cationic surfactant; for clay intercalation modification and dispersion/interface control; research grade supports reproducibility | |
Clay modification reagents (quaternary ammonium / intercalation templates) | 1119-94-4 | Dodecyltrimethylammonium bromide (DTAB) | ≥99% | High-purity DTAB; used for organophilization modification and dispersion system construction | |
Clay modification reagents (quaternary ammonium / intercalation templates) | 57-09-0 | Hexadecyltrimethylammonium bromide (CTAB) | ≥99% | Classic CTAB; commonly used for organophilic intercalation, templating/self-assembly, and interface control in clay modification | |
Clay modification reagents (quaternary ammonium / intercalation templates) | 57-09-0 | Hexadecyltrimethylammonium bromide (CTAB) | Analytical standard, for environmental analysis | Method development/QC; suitable for analytical testing customers | |
Clay modification reagents (quaternary ammonium / intercalation templates) | 57-09-0 | Hexadecyltrimethylammonium bromide (CTAB) | 10 mM in DMSO | Pre-made solution; convenient for rapid template/modification experiments and improved reproducibility | |
Clay modification reagents (silane coupling / interface enhancement) | 919-30-2 | 3-Aminopropyltriethoxysilane (often written as APTES in literature) | ≥99% | Amino silane; for inorganic surface functionalization to introduce —NH₂, improving dispersion and interfacial strength (high purity supports research reproducibility) | |
Clay modification reagents (silane coupling / interface enhancement) | 919-30-2 | 3-Aminopropyltriethoxysilane (often written as APTES in literature) | ≥98% | General-grade amino silane; used for clay/oxide surface modification and composite reinforcement | |
Clay modification reagents (silane coupling / epoxy systems) | 2530-83-8 | 3-Glycidyloxypropyltrimethoxysilane | ≥97% | Epoxy silane; suitable for epoxy/coatings/adhesives, improving adhesion, water/chemical resistance, and interfacial bonding | |
Clay modification reagents (silane coupling / polymerizable grafting) | 2768-02-7 | Vinyltrimethoxysilane | ≥98% (GC) | Vinyl silane; used for inorganic surface treatment in grafting/crosslinking systems to improve compatibility and crosslinking efficiency | |
Key materials for functionalization/composites | 1317-61-9 | O301798 | Oleic-acid-modified magnetic iron oxide nanoparticles (Fe₃O₄) | Particle size: 5–10 nm; concentration: 5 mg/mL; solvent: cyclohexane | Hydrophobic magnetic nanoparticles; suitable for magnetic nanoclay composites/recyclable adsorbents/magnetic separation catalyst supports (better matched with organoclay or hydrophobic matrices) |
Key materials for functionalization/composites | 7761-88-8 | Silver nitrate concentrate | Dilute to 1 L for use; concentration after dilution: 0.1 M | Ag⁺ source; for preparing Ag@clay/HNT antibacterial composites, ion-exchange loading, and controlled-release systems | |
Key materials for functionalization/composites | 9012-76-4 | Chitosan | Medium viscosity, 200–400 mPa·s | Biopolymer matrix; nanoclay composites can improve mechanical properties, film/gel formation, adsorption, and antibacterial carrier capability (commonly used in hydrogels/films/adsorbents) |
Notes:
(1) Some kaolinite-group materials (e.g., kaolin/halloysite) may share CAS 1332-58-7 in supply chains; please distinguish by mineral name, morphology (HNT tubular), hydration state, and characterization results.
(2) The list above includes representative Aladdin products only. For more specifications, please refer to the product list at the end of the document or search by CAS number on the Aladdin website.
Aladdin: https://www.aladdinsci.com/
