A catalyst-free and recycle-reinforcing elastomer vitrimer with exchangeable links.

A catalyst-free and recycle-reinforcing elastomer vitrimer with exchangeable links.
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具有可交换链接的无催化剂且可循环增强的弹性体 vitrimer

DOI:
10.1039/d0ra07728c
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发表时间:
2020-10-21
期刊:
影响因子:
3.9
通讯作者:
Lin, Cong
Lin, Cong
中科院分区:
化学3区
文献类型:
--
作者:
Wang, Jinyun;Chen, Shubin;Lin, Tengfei;Ke, Jinhuang;Chen, Tianxiang;Wu, Xiao;Lin, Cong

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三聚物作为一种有趣的聚合物,其交联网络中具有可交换的连接键,使其具有可回收和再加工的能力。然而,大多数的玻璃体聚合物通常是通过复杂的合成和聚合过程制备的。有毒和不稳定的外源催化剂不可避免地被用于激活交换反应以重排交联网络。这些缺点限制了玻璃态聚合物的广泛应用。此外,大多数已报道的玻璃体在回收后只能部分保持或严重恶化其机械性能。在此,为了解决上述问题,首次公开了一种不含催化剂且增强弹性体的玻璃体聚合物。通过将市售环氧化天然橡胶与羧基丁腈橡胶反应共混,得到了具有可交换β-羟基酯键的弹性体玻璃化聚合物。引人注目的是,玻璃钢具有特殊的抗弯性能。本工作为制备弹性体玻璃化聚合物提供了一种可行的方法,促进了交联弹性体的回收利用。
Vitrimers, as intriguing polymers, possess exchangeable links in the crosslinking networks, endowing them with the abilities of recycling and reprocessing. However, most of vitrimers are generally fabricated via complex synthesis and polymerization processes. Toxic and unstable exogenous catalysts are inevitably applied to activate the exchange reaction to rearrange the crosslinking networks. These drawbacks limit the widespread applications of vitrimers. Moreover, most reported vitrimers could only partially maintain or severely deteriorate their mechanical properties after recycling. Herein, to solve the above-mentioned problems, for the first time, a catalyst-free and recycle-reinforcing elastomer vitrimer is revealed. By the reactive blending of commercially available epoxidized natural rubber and carboxylated nitrile rubber, the elastomer vitrimer associated with exchangeable β-hydroxyl ester bonds was obtained. Strikingly, the vitrimer exhibits an exceptional recycle-reinforcing property. This work provides a feasible method to fabricate elastomer vitrimers, which promotes the recycling of crosslinking commercial available elastomers.
DOI: 10.1021/acs.macromol.6b00826
发表时间: 2016-08-23
期刊: MACROMOLECULES
影响因子: 5.5
作者:
Legrand, Aurelie;Soulie-Ziakovic, Corinne
通讯作者: Soulie-Ziakovic, Corinne
DOI: 10.1021/acs.iecr.6b02931
发表时间: 2016-10-26
影响因子: 4.2
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期刊: MACROMOLECULES
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发表时间: 2015-01-01
期刊: POLYMER CHEMISTRY
影响因子: 4.6
作者:
Imbernon, L.;Oikonomou, E. K.;Leibler, L.
通讯作者: Leibler, L.
DOI: 10.1016/j.polymer.2016.04.023
发表时间: 2016-06-14
期刊: POLYMER
影响因子: 4.6
作者:
Imbernon, L.;Pauchet, R.;Norvez, S.
通讯作者: Norvez, S.