PEG Surface Modification of Microcrystalline Cellulose@Nanotitanium Dioxide Core-Shell Composite to Improve Sunscreen Performance.

ABSTRACT: Polyethylene glycol (PEG) is commonly used to prevent particle aggregation of nanotitanium dioxide (nano-TiO₂) through steric hindrance. The particle aggregation of microcrystalline cellulose@nano-TiO₂ core-shell sunscreen composite (MCC@nano-TiO₂) makes the powder difficult to grind and also boosts the probability of nano-TiO₂ peeling off during grinding. It is essential to inhibit agglomeration by surface treatment to avoid adverse effects in cosmetic applications. First, the structural and UV protection capability of the composite was investigated before and after the complete coverage of MCC by nano-TiO₂. Then, different amounts of PEG were added in the later stages of composite preparation to fix PEG onto the particle surfaces. Sy

SUBMITTER: Yu H 

PROVIDER: S-EPMC12809339 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature