Optimal conditions for the use of polyrotaxane as a cross-linker in preparing elastomers with high toughnesses

IF 2.3 4区化学 Q3 POLYMER SCIENCE

Polymer Journal Pub Date : 2024-02-28 DOI:10.1038/s41428-024-00896-8

Sizhe Liu, Tomoya Hayashi, Mitsuo Hara, Takahiro Seki, Kohzo Ito, Yukikazu Takeoka

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Abstract

The effects of the cyclic molecules within polyrotaxanes moving over axial molecules serving as cross-linking points in a polymeric network preclude observation of the cyclic effects in polymer networks composed of conventional cross-linking agents. As a result, polymer networks with movable cross-linking points behave more gently and stretch better than conventional polymer networks. These polymer networks can be composed of various polymers when using cross-linkers obtained by modifying the vinyl groups on the polyrotaxanes. In this study, the effects of the polyrotaxane cross-linker concentration and solvent content on elastomer preparation were investigated to obtain elastomers with high toughnesses due to the properties of the polyrotaxane cross-linking agent. If elastomers were prepared in a state in which the cyclic effect of the polyrotaxane was easily expressed by the concentration of the polyrotaxane cross-linker and the amount of solvent, the elastomers obtained elongated more and were tougher than elastomers made from conventional cross-linkers. In this study, the effects of the polyrotaxane cross-linker concentration and solvent content on elastomer preparation were investigated to obtain elastomers with high toughnesses due to the properties of the polyrotaxane cross-linking agent. If elastomers were prepared in a state in which the slide-ring effect of the polyrotaxane was easily expressed by the concentration of the polyrotaxane cross-linker and the amount of solvent, the elastomers obtained elongated more and were tougher than elastomers made from conventional cross-linkers.

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在制备高韧性弹性体过程中使用聚二十六烷作为交联剂的最佳条件

在聚合物网络中作为交联点的轴向分子上移动的聚罗他赛内环状分子所产生的效应，排除了在由传统交联剂组成的聚合物网络中观察环状效应的可能性。因此，与传统的聚合物网络相比，具有可移动交联点的聚合物网络表现得更加平缓，伸展性更好。如果使用通过改变聚对苯二甲酸乙烯基而获得的交联剂，这些聚合物网络可以由各种聚合物组成。本研究调查了聚二十六烷交联剂浓度和溶剂含量对弹性体制备的影响，以获得因聚二十六烷交联剂的特性而具有高韧性的弹性体。如果在制备弹性体时，聚二十六烷的循环效应很容易通过聚二十六烷交联剂的浓度和溶剂量表现出来，那么获得的弹性体比使用传统交联剂制成的弹性体伸长更多，韧性更高。

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来源期刊

Polymer Journal 化学-高分子科学

CiteScore

5.60

自引率

7.10%

发文量

131

审稿时长

2.5 months

期刊介绍： Polymer Journal promotes research from all aspects of polymer science from anywhere in the world and aims to provide an integrated platform for scientific communication that assists the advancement of polymer science and related fields. The journal publishes Original Articles, Notes, Short Communications and Reviews. Subject areas and topics of particular interest within the journal''s scope include, but are not limited to, those listed below: Polymer synthesis and reactions Polymer structures Physical properties of polymers Polymer surface and interfaces Functional polymers Supramolecular polymers Self-assembled materials Biopolymers and bio-related polymer materials Polymer engineering.