Improved understanding of in-situ polymerization of zinc dimethacrylate: The solid bulk polymerization

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• 作者：Zheng Wei^a ; Yonglai Lu^a ; ^b ; Yang Meng^a ; Liqun Zhang^a ; ^b ; ^{zhanglq@mail.buct.edu.cn}
• 关键词：Zinc dimethacrylate ; HNBR ; In-situ polymerization
• 刊名：Polymer
• 出版年：2012
• 期刊代码：83_00323861
• 类别：ms
• 出版时间：9 March, 2012
• 卷：53
• 期：6
• 页码：1409-1417
• 文件大小：1849 K

摘要

In this work, we chose the HNBR/ZDMA composite as a system reinforced by the metal salt of unsaturated carboxylic acids (MSUCA) and systematically studied the evolution of the in-situ polymerization of ZDMA particles during peroxide curing. Differential scanning caborimetry, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and polarization microscopy were used in this study. The microstructure of the remaining micron-sized dispersions in the cured HNBR/ZDMA was verified for the first time, and a new mechanism for in-situ polymerization of ZDMA, i.e., the solid bulk polymerization initialized onto the surface of ZDMA particles, was put forward. Moreover, we discussed how the micron-sized dispersions generated by the solid bulk polymerization of undiffused ZDMA particles affected the crosslink structures and mechanical properties of the vulcanizate.