Self-healing supramolecular elastomers based on the multi-hydrogen bonding of low-molecular polydimethylsiloxanes: Synthesis and characterization
Self-healing supramolecular elastomers based on the multi-hydrogen bonding of low-molecular polydimethylsiloxanes: Synthesis and characterization
复制标题
基于低分子聚二甲基硅氧烷多氢键的自修复超分子弹性体：合成与表征
DOI：
10.1002/app.38832
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发表时间：
2013-09-05
影响因子：
3
通讯作者：
Wang, Lianshi
中科院分区：
文献类型：
--
作者：
Zhang, Anqiang;Yang, Lin;Wang, Lianshi
以聚二甲基硅氧烷衍生物（PDMS-COOHx，其中x分别为1、2和3）、二乙烯三胺和尿素为原料，分两步合成了新型自修复超分子弹性体（SESi）。通过傅里叶变换红外光谱、1H-NMR、差示扫描量热法、动态力学分析和凝胶渗透色谱法对反应和最终产物进行了跟踪、表征和证实。与先前报道的基于二聚酸的超分子橡胶相比，SESi具有较低的玻璃化转变温度（约为-113℃），具有较软的聚二甲基硅氧烷链，在室温甚至更低的温度下具有真正的橡胶般的弹性行为和自修复性能。(c) 2013 Wiley Periodicals, Inc.；j:。变异较大。科学。, 2013年
Novel self-healing supramolecular elastomers based on polydimethylsiloxanes (SESi) were synthesized from a mixture of polydimethylsiloxanes derivers with single, di-, or tri-carboxylic acid groups (PDMS-COOHx, where x = 1, 2, and 3, respectively), diethylene triamine, and urea with a two-stage procedure. The reactions and the final products were tracked, characterized, and confirmed by Fourier transform infrared spectroscopy, 1H-NMR, differential scanning calorimetry, dynamic mechanical analysis, and gel permeation chromatography. Compared with a supramolecular rubber based on dimer acid (reported previously) with a similar synthesis procedure, the SESi showed a lower glass-transition temperature of about -113 degrees C for the softer chain of polydimethylsiloxane and showed real rubberlike elastic behavior and self-healing properties at room temperature or even lower temperatures. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013