School of Chemical Sciences, North Maharashtra University, Jalgaon, India.
J Colloid Interface Sci. 2011 Feb 15;354(2):506-10. doi: 10.1016/j.jcis.2010.11.021. Epub 2010 Dec 8.
Novel approach for the synthesis of core-shell polystyrene nanoparticles by living hydrophilic polymer consisting of thiocarbonyl thio end group is reported. The surfactant free emulsion polymerization of styrene in the presence of macro-RAFT (reversible addition fragmentation chain transfer) agent is carried out to synthesize stable latex particles with smaller particle size. A macro-RAFT agent is prepared by homopolymerization of sodium styrene sulfonate (NaSS) in aqueous phase by using dithioester as chain transfer agent. This synthesized polystyrene sulfonate-sodium (PSS-Na) based macro-RAFT agent, which is essentially water soluble macromolecular chain transfer agent used for the surfactant-free batch emulsion polymerization of styrene. Transmission electron microscopy (TEM) study of the synthesized colloids shows the narrow particle size distribution with core-shell morphology.
本文报道了一种通过含有硫羰基硫端基的亲水性聚合物合成核壳聚苯乙烯纳米粒子的新方法。在大分子可逆加成-断裂链转移（RAFT）试剂的存在下，苯乙烯的无皂乳液聚合被用来合成具有更小粒径的稳定乳胶粒子。大分子 RAFT 试剂是通过二硫酯作为链转移剂在水相中均聚苯乙烯磺酸钠（NaSS）制备的。这种合成的聚苯乙烯磺酸钠-钠（PSS-Na）基大分子 RAFT 试剂，实质上是一种水溶性的大分子链转移剂，可用于无皂批量乳液聚合苯乙烯。对合成胶体的透射电子显微镜（TEM）研究表明，其具有核壳形态的窄粒径分布。
