Preparation of Polymer Microspheres with a Rosin Moiety from Rosin Ester, Styrene, and Divinylbenzene
writer：Caili YU1, Chuanwei CHEN1, Qinhai GONG2, Faai ZHANG*2
keywords：Polymer microsphere; Rosin ester; Styrene; Orthogonal experiment
source：期刊
specific source：Polymer International
Issue time：2012年
Rosin
was reacted with hydroxyethyl methacrylate to produce a macromonomer. This macromonomer
was used to replace styrene partly for the novel preparation of polymer
microspheres with divinylbenzene via suspension polymerization. Orthogonal experiments were conducted to analyze the
factors influencing the particle size, particle size distribution, swelling
ratio, and degree of crosslinking of the polymer microspheres. Fourier
transform infrared spectroscopy, thermogravimetric analyses, and scanning
electric microscopy were used to examine the structures, thermal properties, and
morphologies of the polymer microsphere, respectively. The results showed that
the amount of dispersant had the greatest influence on particle size and
distribution. On the other hand, the monomer ratio greatly influenced the
swelling ratio and degree of crosslinking of the polymer microspheres. The most
decomposition temperature of the polymer microspheres increased upon the
introduction of rosin moiety into the
product. Open pores were
abundant on the surface of the polymer microsphere due to the existence of porogen,
which provided a base for adsorption and separation. The present study opened a
novel route for using naturally occurring rosin.