摘要
Cross linked polystyrene microspheres with quarternary ammonium have been prepared via surfactant\|free emulsion polymerization. It was confirmed that the sizes of the microspheres decreased at a certain extent when the contents of the initiator,cross linked reagent or functional monomer were increased.TEM observation indicated that the size of polymer microspheres ranged from tens of nanometer to hundreds of nanometer. The XPS results showed that the hydrophilic quarternary ammonium groups tended to be rich on the surface of the microspheres during the polymerization.In addition,their swelling ratio can be investigated by using the “ in situ" swelling measurement of polymer microspheres.
Cross-linked polystyrene microspheres with quarternary ammonium have been prepared via surfactant-free emulsion polymerization. It was confirmed that the sizes of the microspheres decreased at a certain extent when the contents of the initiator, Cross-linked reagent or functional monomer were increased. TEM observation indicated that the size of polymer microspheres ranged from tens of nanometer to hundreds of nanometer. The XPS results showed that the hydrophilic quarternary ammonium groups tended to be rich on the surface of the microspheres during the polymerization. In addition, their swelling ratio can be investigated by using the 'in-situ' swelling measurement of polymer microspheres.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2003年第2期293-297,共5页
Acta Polymerica Sinica
基金
国家重点基础研究专项经费资助项目 (项目号G19990 64 80 3 )
