Preparation of dendrimer-like copolymers based on polystyrene and poly(l-lactide) and formation of hollow microspheres
作者： Li-Zhi Kong , Cai-Yuan Pan
DOI: 10.1016/J.POLYMER.2007.11.042
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摘要: Abstract The three generations dendrimer-like copolymers C(PSt(PLLA(PSt–PNAS)2)2)3 and C(PSt(PLLA(PSt–PNAS)2)2)4 have been successfully synthesized by combination of ATRP ROP. Diethanol amine 2,2-bis(methylene-2-bromoisobutyrate) propionyl chloride (BMBIBPC) were used as divergent reagents, respectively, before preparations the second third generations. resultant polymers characterized GPC 1H NMR. Then outermost PSt–PNAS in was cross-linked via substitution reaction NAS with ethylene diamine, at same time, PLLA segments generation decomposed dilute THF or CHCl3 solution, forming hollow particles. morphologies SEM DLS methods, spherical particles various sizes observed. may potential applications catalysis bioengineering.
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