Tamim Khaled, Gale Cody B, Silverthorne Kaitlyn E C, Lu Guanhua, Iao Cheok Hang, Brook Michael A
Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4M1, Canada.
ACS Sustain Chem Eng. 2023 Apr 26;11(18):7062-7071. doi: 10.1021/acssuschemeng.3c00103. eCollection 2023 May 8.
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]/[HNR] that was found to be optimal when the ratio exceeded 1:1.
更高的可持续性与那些在使用寿命结束时能在环境中迅速分解的弹性体相关，同样重要的是，与那些在使用寿命结束前很久就能被再加工/再利用的弹性体相关。我们报道了兼具热塑性（可再加工性）和抗氧化活性的有机硅弹性体的制备。离子键和氢键的结合将天然酚类抗氧化剂（包括儿茶酚、连苯三酚、单宁酸等）连接到遥爪氨基烷基硅氧烷上。弹性体的机械性能，包括它们的加工性能，与[ArOH]/[HNR]的比例密切相关，当该比例超过1:1时被发现是最佳的。
