Macromolecules·· 12 小时前精选AI 评分60
PLA/PLGA瓶刷共聚物降解中的邻近驱动邻位效应
A Proximity-Driven Neighbor Effect in the Degradation of PLA/PLGA Bottlebrush Copolymers
AI 导读
研究报道，PLA/PLGA瓶刷共聚物的主链序列会调节侧链降解速率：采用grafting-through策略，以乙烯基封端的PLA和PLGA大分子单体制备了总组成相同、侧链分布分别为无规、交替、梯度与双嵌段的瓶刷共聚物，并用1H NMR、SEC和多角度光散射跟踪水解降解。
推荐理由
通过接枝法制备组成相同但侧链序列不同的瓶刷共聚物，给出序列与PLA水解速率的对应关系，为可吸收材料的降解调控提供新维度。
创新点
在组成、分子量等相同的前提下，仅改变侧链沿主链的序列排布，就得到可区分的PLA水解速率，并把无规与交替的等效性解释为区域性邻近效应而非直接邻位识别。
图表、补充材料与最终表述以原文为准。阅读原文
来源：Macromolecules · doi.org
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