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首页> 外文期刊>RSC Advances >Poly(styrene-graft-hyperbranched polyglycidol): synthesis and solution behavior of a hyperbranched polyelectrolyte
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Poly(styrene-graft-hyperbranched polyglycidol): synthesis and solution behavior of a hyperbranched polyelectrolyte

机译：聚苯乙烯接枝超支化缩水甘油：超支化聚电解质的合成及溶液行为

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摘要

This work presents a three-step synthetic procedure to obtain a hypergrafted copolymer composed of a glassy backbone with flexible branched pendant segments. The desired hypergrafted structure was obtained by using a polyfunctional macroinitiator, linear poly(styreneco-4-hydroxystyrene), to yield polystyrene-graft-hyperbranched polyglycidol with randomly placed branch junctions. Atomic force microscopy, dynamic light scattering, and viscometry probed the aggregation and viscometric behavior of the polymer in DMF and DMF-LiBr solutions. The polymer exhibited polyelectrolyte behavior demonstrated by a large increase in the reduced viscosity prior to neutralization with LiBr salt. Additionally, conformational changes were observed by dynamic light scattering in both the average aggregate size and aggregate population with the addition of LiBr salt.
机译：这项工作提出了一个三步合成程序，以获得由玻璃状骨架和柔性支链侧链部分组成的超接枝共聚物。通过使用多官能团大分子引发剂线性聚（苯乙烯--4-羟基苯乙烯）获得所需的超接枝结构，得到具有随机放置的分支结的聚苯乙烯-接枝-超支化聚缩水甘油。原子力显微镜，动态光散射和粘度测定法检测了聚合物在DMF和DMF-LiBr溶液中的聚集和粘度行为。在用LiBr盐中和之前，通过降低粘度的大量增加证明了该聚合物表现出聚电解质行为。另外，通过添加LiBr盐，通过动态光散射在平均聚集体大小和聚集体中观察到构象变化。

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