Novel one-step synthesis of acrylonitrile butadiene rubber/bentonite nanocomposites with (3-Mercaptopropyl)trimethoxysilane as a compatilizer
Novel one-step synthesis of acrylonitrile butadiene rubber/bentonite nanocomposites with (3-Mercaptopropyl)trimethoxysilane as a compatilizer
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DOI：
10.1002/pc.23080
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发表时间：
2015-09-01
影响因子：
5.2
通讯作者：
Cho, Ur Ryong
中科院分区：
文献类型：
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作者：
Ge, Xin;Li, Mei Chun;Cho, Ur Ryong
以3-巯基丙基三甲氧基硅烷（MPTMS）为相容剂，在丁腈橡胶（NBR）胶乳中一步法合成了NBR/膨润土（Bt）纳米复合材料。将纳米复合材料与固化添加剂混合，然后硫化。采用傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）对所制备的硫化胶进行了表征。研究了其固化性能和力学性能。用热重分析（TGA）和差示扫描量热法（DSC）研究了其热性能。通过场发射扫描电子显微镜（FE-SEM）研究了形貌。通过溶胀实验，得到了交联剂的溶胀率和交联密度。通过FTIR表征了MPTMS的水解和缩合反应，通过XRD表征了Bt的插层/剥离结构。与纯NBR相比，纳米复合材料的力学性能明显提高。FE-SEM图像证实了膨润土颗粒的分散性和MPTMS的作用。热重分析结果表明，纳米复合材料的最快失重温度（T-max）比纯NBR提高了10 ℃以上，表明热稳定性增强。通过溶胀实验，确定了最佳配比的NBR/MPTMS/Bt纳米复合材料的溶胀率为139%，而纯NBR的溶胀率为210%。Polym.比较器：36：1693-1702，2015. (c)2014年塑料工程师学会
Acrylonitrile butadiene rubber (NBR)/bentonite (Bt) nanocomposites were synthesized by an one-step method in NBR latex with (3-Mercaptopropyl)trimethoxysilane (MPTMS) as a compatilizer. The nanocomposites were compounded with curing additives and then vulcanized. The prepared vulcanizates were characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The curing properties and mechanical properties were also investigated. The thermal properties were studied with thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC). The morphology was investigated by field emission-scanning electron microscopy (FE-SEM). By swelling test, the swelling ratio and the crosslinking density were achieved. The hydrolyzation and condensation of MPTMS was identified by FTIR while the intercalated/exfoliated structure of Bt was determined by XRD. It was evident that the mechanical properties of the nanocomposites were significantly improved compared with the neat NBR. The well-dispersed bentonite particles and effects of MPTMS were supported by the images from FE-SEM. The results of TGA showed that the fastest weight-loss temperature (T-max) was elevated by over 10 degrees C for the nanocomposites compared with the neat NBR, indicating an enhanced thermal stability. By swelling test, the swelling ratio was determined, decreased to 139% for the optimized NBR/MPTMS/Bt nanocomposites compared with 210% for neat NBR. POLYM. COMPOS., 36:1693-1702, 2015. (c) 2014 Society of Plastics Engineers