Abstract Nano-sized starch (NSt) was reported as reactive filler to reinforce ethylene-co-vinyl acetate rubber (EVM) by using epoxy-functionalized EVM (GMA-EVM) as compatibilizer together with 3-(2-aminoethylamino) propyl dimethoxy methyl silane (KH602). This resulted in EVM/GMA-EVM/NSt nanocomposites having significant improved properties. The improvement is attributed to the small starch particle size and chemical compatibilization. The tensile strength (Ts) was increased from 9.2 to 18.7 MPa when 20 phr (per hundred rubber by weight) of the GMA-EVM compatibilizer is incorporated. Compared to EVM/NSt, the EVM/GMA-EVM/NSt nanocomposites possess stronger interfacial interaction between fillers and the matrix according to morphology and crosslink density analysis. Besides the crosslink of EVM and GMA-EVM chains created by dicumyl peroxide (DCP), under the aid of KH602, extra chemical bonding was generated between: (a) GMA-EVM chains, (b) GMA-EVM and NSt. Thus, strong reinforcement of EVM was obtained. These interesting results provide a new insight to make robust rubbers which may create new applications for rubbers and natural fillers.

中文翻译：

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使用纳米级淀粉填料对 Ethyl-co-vinyl Acetate 橡胶复合材料的优异增强：粒度和反应增容的作用

摘要 纳米淀粉 (NSt) 作为活性填料，通过使用环氧官能化 EVM (GMA-EVM) 作为增容剂与 3-(2-氨基乙基氨基) 丙基二甲氧基甲基橡胶 (EVM) 增强乙烯-共-醋酸乙烯酯橡胶 (EVM)。硅烷 (KH602)。这导致 EVM/GMA-EVM/NSt 纳米复合材料具有显着改善的性能。这种改进归因于小淀粉粒度和化学相容性。当加入 20 phr（每百份橡胶重量）的 GMA-EVM 增容剂时，拉伸强度 (Ts) 从 9.2 MPa 增加到 18.7 MPa。根据形态和交联密度分析，与 EVM/NSt 相比，EVM/GMA-EVM/NSt 纳米复合材料在填料和基体之间具有更强的界面相互作用。除了由过氧化二异丙苯 (DCP) 创建的 EVM 和 GMA-EVM 链的交联之外，在 KH602 的帮助下，在：(a) GMA-EVM 链，(b) GMA-EVM 和 NSt 之间产生了额外的化学键。因此，获得了 EVM 的强增强。这些有趣的结果为制造坚固的橡胶提供了新的见解，这可能为橡胶和天然填料创造新的应用。