Synthesis of a Bottlebrush Polymer Gel with a Uniform and Controlled Network Structure
Synthesis of a Bottlebrush Polymer Gel with a Uniform and Controlled Network Structure
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具有均匀可控网络结构的洗瓶刷聚合物凝胶的合成
DOI：
10.1021/acsmacrolett.0c00791
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发表时间：
2021
影响因子：
7.015
通讯作者：
Yoshie Naoko
中科院分区：
文献类型：
--
作者：
Nakagawa Shintaro;Yoshie Naoko
通过对单分散星星型聚合物进行端接，合成了一种结构可控的聚合物凝胶。采用原子转移自由基聚合和后聚合改性相结合的方法合成了一种主链和侧链聚合度可控的四臂星形BB聚合物。在每个臂的末端引入的反应性端基与溶液中的小的双官能连接体反应，导致形成BB聚合物凝胶。对BB聚合物凝胶的弹性研究表明其具有均匀的网络结构。我们的方法能够在整个BB聚合物网络中精确和均匀地调整基本结构参数，这将有利于开发具有所需机械响应的软材料。
A structurally controlled polymer gel was synthesized by end-linking a monodisperse star polymer in which each arm was a bottlebrush (BB) polymer densely grafted with side chains. The combination of atom transfer radical polymerization and postpolymerization modification yielded a four-arm star-shaped BB polymer with a controlled polymerization degree of the backbone and side chains. The reactive end groups introduced at the end of each arm reacted with small bifunctional linkers in solution, leading to the formation of a BB polymer gel. The elasticity study on the BB polymer gel suggested its uniform network structure. Our method enables precise and uniform tuning of essential structural parameters across the entire BB polymer network, which will be beneficial for developing soft materials with desired mechanical responses.