New Polymer Chain Architecture: Synthesis and Characterization of Star Polymers with Comb Polystyrene Branches
New Polymer Chain Architecture: Synthesis and Characterization of Star Polymers with Comb Polystyrene Branches
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DOI：
10.1021/ma0001436
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发表时间：
2000-09
期刊：
影响因子：
5.5
通讯作者：
Michel Schappacher and;A. Deffieux
中科院分区：
文献类型：
--
作者：
Michel Schappacher and;A. Deffieux
合成了高度支化的星形梳状聚苯乙烯(由PS梳子组成的四臂和五臂星形聚合物)。开发的策略是基于活性聚苯乙烯锂与具有星形链状结构的聚氯乙基乙烯基醚的高度选择性偶联反应。采用活性聚合技术分别制备了PS接枝物和聚(CEVE)构筑块。测定了这些新型PS梳状星形大分子的溶液性质和特征参数([η]、Rg、Rh、ρ)，并与相应的线型PS梳子进行了比较。结果证实了新的大分子结构具有更高的致密性，在所考察的整个摩尔质量区域内表现为坚硬的球体。
Highly branched starlike comb polystyrenes (star polymers with four and five arms constituted of PS combs) have been synthesized. The strategy developed is based on the highly selective coupling reaction of living polystyryllithium onto poly(chloroethyl vinyl ether) chains with a starlike chain architecture. The PS grafts and the poly(CEVE) building blocks were prepared individually by living polymerization techniques. The solution properties and the characteristic parameters ([η], Rg, Rh, ρ) of these new PS comb star macromolecules were determined and compared to those of the corresponding “linear” PS combs. The results confirm the much higher compactness of the new macromolecular structures, which behave as hard spheres in the whole molar mass domain examined.