Topology reset, reshuffling, and reconstruction of synthetic elastomers
Topology reset, reshuffling, and reconstruction of synthetic elastomers
复制标题
DOI：
10.1016/j.mtchem.2021.100727
复制
发表时间：
2022-03
影响因子：
7.3
通讯作者：
M. Oka;S. Honda
中科院分区：
文献类型：
--
作者：
M. Oka;S. Honda
具有三维网络结构的聚合物具有重要的实际意义。网络聚合物由于其不溶不溶的特性，具有很高的耐热性和耐化学性。然而，这种耐用的性质阻碍了回收、循环利用和财产修改。因此，需要实现一种能够随时随地修改网络聚合物的性质的方法。在这里，我们报道了拓扑重置、重组和重构(称为T-rex3)来调节具有可逆光裂链的聚二甲基硅氧烷网络的性质。T-REX3方法是环保的，只需混合网络和环状聚合物以及随后的光照射，就可以轻松地回收、循环和调节粘弹性。这里开发的T-REX3具有广泛的可调性和显著的粘弹性开关切换能力，为粘合剂、橡胶、体外组织模型和3D建模材料等各种应用开辟了一条新的途径。
Polymers with three-dimensional network structures are practically important. Owing to their insoluble and infusible properties, network polymers have high thermal and chemical resistance. However, such a durable nature discourages recovery, recycling, and property modification. Hence, there has been a demand for the realization of a methodology that enables modification of the properties of network polymers anytime and anywhere. Herein, we report topology-reset, -reshuffling, and -reconstruction (termed T-rex3) for modulating the properties of poly(dimethyl siloxane) networks with reversibly photocleavable chains. The T-rex3 methodology is environmentally friendly and enables facile recovery, recycling, and modulation of viscoelasticity simply by mixing network and cyclic polymers and following photo-irradiation. With benefits such as wide range tunability and dramatic ON–OFF switchability of viscoelasticity, the T-rex3 developed here opens a new avenue for a variety of applications, such as adhesives, rubbers, in vitro tissue models, and materials for 3D modeling.