1,700+ technical articles by Aladdin Scientific's scientists on reagent selection, reaction mechanisms, assay design and formulation. New every week.
Many problems in coating formulations may appear, on the surface, to be related to solvents, additives, pigments, application, or curing. In essence, however, they are often associated with the polarity matching of resins.
Coating lifting refers to a defect that occurs during multi-layer coating application or repainting of old paint films. Solvents, co-solvents, or thinners in the upper coating penetrate into the underlying coating film, causing the lower film to soften, become plasticized, swell, or partially ...
The same resin can be modified in different ways, and different resins can also achieve performance improvements through similar structural design strategies. For example, copolymerization can be used to adjust the glass transition temperature, Tg; grafting can improve the compatibility between ...
Cell wall polysaccharide-degrading enzymes are mainly used to lyse plant cell walls, fungal cell walls, bacterial peptidoglycan, and microbial extracellular polysaccharide matrices. Common enzyme types include cellulase, pectinase, xylanase, chitinase, β-glucanase, lysozyme, and various ...
In coating formulations, issues such as poor leveling, cratering, orange peel, edge pullback, waviness, poor slip, and insufficient surface smoothness may appear to be application defects, viscosity-related problems, or resin-selection issues. However, their underlying causes are often closely ...
White coatings, light-colored topcoats, and clear varnishes usually show good appearance shortly after application. However, during storage, application, curing, or service, they may gradually develop yellowing, discoloration, brownish-yellow tones, or a deeper amber appearance. These phenomena ...
Urea detection is commonly used for serum/plasma urea nitrogen, urinary urea excretion, cell culture metabolism, fermentation systems, and environmental sample analysis. The urease method depends on enzymatic hydrolysis of urea to produce ammonia and is suitable for clinical automation and ...
When problems occur in a coating formulation, it is not enough to look only at the surface symptoms. Issues such as foaming, cratering, sagging, floating and flooding, and poor application appearance can often be improved by adjusting additives, pigments and fillers, solvents, the rheological ...
After a waterborne coating is applied, water evaporation is only the beginning of the film-formation process. For emulsion-type resins and waterborne dispersions, the resin is usually dispersed in water in the form of polymer particles, colloidal particles, or resin microparticles. After ...