Controlling Architecture and Mechanical Properties of Polyether Networks with Organoaluminum Catalysts
Controlling Architecture and Mechanical Properties of Polyether Networks with Organoaluminum Catalysts
复制标题
用有机铝催化剂控制聚醚网络的结构和机械性能
DOI:
10.1021/acs.macromol.2c00602
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发表时间:
2022
期刊:
影响因子:
5.5
通讯作者:
Sanoja, Gabriel E.
中科院分区:
文献类型:
--
作者:
Dookhith, Aaliyah Z.;Lynd, Nathaniel A.;Creton, Costantino;Sanoja, Gabriel E.
Soft materials can sustain large, elastic, and reversible deformations, finding widespread use as elastomers and hydrogels. These materials constitute 3-D polymer networks and are typically synthesized by cross-linking polymer chains or copolymerizing monomer and cross-linker. Seminal investigations have enabled control over the network architecture by cross-linking chains of poly(dimethylsiloxane), poly(1,4-butadiene), or tetra-poly(ethylene glycol); however, as soft materials become attractive for robotics, electronics, and prosthetics, codesigning the network architecture, mechanical, and functional properties has become pressing. We investigate the relationship among reaction pathway, network architecture, and mechanical properties in poly(ethyl glycidyl ether) networks synthesized by epoxide ring-opening polymerization with two organoaluminum catalysts. The key result is that uncontrolled polymerizations yield loosely cross-linked, entangled, soft, and extensible networks, whereas more controlled polymerizations, instead, lead to highly cross-linked, stiff, and brittle networks. Such catalytic control over network architecture and mechanical properties could enable design of novel soft, tough, and functional materials.
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期刊:
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