Preparation of composite microspheres with core/shell structure by electrostatic interaction
GAO Yang, WANG Haiyan, SHEN Shukun, HU Daodao*
(Engineering Research Center of Historical and Cultural Heritage Protection, Ministry of Education;College of Chemistry and Materials Science, Shaanxi Normal University, Xi′an 710062, Shaanxi, China)
Abstract:
The poly(acrylamidemethacrylic acidNvinylpyrrolidinone)/silica (P(AMMAAVP)/SiO2) composite microspheres with coreshell structure were prepared via electrostatic interaction between negatively charged SiO2 nanoparticles and the positively charged microgels modified by 3(trimethoxysilyl)propyldimethyl octadecylammonium chloride (AEM). The results indicated that the surface morphology of composite microspheres with core/shell structure can be affected by the dosage of AEM, the dosage of SiO2 colloid, loading manner and solvent constitute. Based on the results obtained, the method can be used to prepare various composite microspheres with core/shell structure by changing the organic template and inorganic precursor.
KeyWords:
P(AMMAAVP); P(AMMAAVP)/SiO2 composite microspheres; electrostatic interaction