Zinc Dimethacrylate Induced in Situ Interfacial Compatibilization Turns EPDM/PP TPVs into a Shape Memory Material

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• 作者：Chuanhui Xu ; Baofeng Lin ; Xingquan Liang ; Yukun Chen
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：April 27, 2016
• 年：2016
• 卷：55
• 期：16
• 页码：4539-4548
• 全文大小：920K
• 年卷期：0
• ISSN：1520-5045

文摘

Ethylenepropylenediene rubber/polypropylene (EPDM/PP) thermoplastic vulcanizates (TPVs) are the most commercial general thermoplastic elastomers with a substantial cost advantage. Through suitable interface modification, new functional application can be brought to EPDM/PP TPVs. In this study, we present a shape memory polymer (SMP) derived from an EPDM/PP TPV in which the phase interface was strongly enhanced by zinc dimethacrylate (ZDMA). ZDMA-induced in situ compatibilization provided assistance in deforming or keeping the deformed rubber particles in temporary shape, storing sufficient resilience to well fulfill the shape memory effect (SME) of EPDM/PP TPVs. The PP phase served as a “container” to fix the deformation status of rubber particles via the enhanced interface. The incorporation of ZDMA significantly reduced the size of rubber particles, consequently increasing the contact areas between the EPDM and PP phases, which contributed to the SME. The shape memory behavior of EPDM/PP/ZDMA TPVs was characterized, and the results demonstrated that good shape fixing (>90%) and excellent shape recovery (>90%) could be obtained at suitable deformation temperatures.