Antioxidant Silicone Elastomers without Covalent Cross-Links

被引：5
|
作者：
Tamim, Khaled [1 ]
Gale, Cody B. [1 ]
Silverthorne, Kaitlyn E. C. [1 ]
Lu, Guanhua [1 ]
Iao, Cheok Hang [1 ]
Brook, Michael A. [1 ]
机构：
[1] McMaster Univ, Chem & Chem Biol, Hamilton, ON L8S 4M1, Canada
来源：
ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2023年 / 11卷 / 18期
基金：
加拿大自然科学与工程研究理事会;
关键词：
dynamic cross-linking; ionic linkers; natural antioxidants; silicones; phenolic compounds; POLYMER; STABILIZATION; DEGRADATION;
D O I：
10.1021/acssuschemeng.3c00103
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Improved sustainability is associated with elastomers that readily breakdown in the environment at end of life and, as importantly, that can be reprocessed/reused long before end of life arises. We report the preparation of silicone elastomers that possess both thermoplasticity-reprocessability-and antioxidant activity. A combination of ionic and H-bonding links natural phenolic antioxidants, including catechol, pyrogallol, tannic acid, and others, to telechelic aminoalkylsilicones. The mechanical properties of the elastomers, including their processability, are intimately linked to the ratio of [ArOH]/[H2NR] that was found to be optimal when the ratio exceeded 1:1.
引用
收藏
页码：7062 / 7071
页数：10
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