Reinforcement of transparent ethylene-co-vinyl acetate rubber by nanocrystalline cellulose
Reinforcement of transparent ethylene-co-vinyl acetate rubber by nanocrystalline cellulose
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纳米晶纤维素增强透明乙烯-醋酸乙烯酯橡胶
DOI：
10.1016/j.eurpolymj.2015.01.037
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发表时间：
2015-05
影响因子：
6
通讯作者：
Mingqing Chen
中科院分区：
文献类型：
--
作者：
Long Jiang;Martin Hoch;Weifu Dong;Mingqing Chen
采用溶液共混法和过氧化物静态硫化法制备了乙烯-醋酸乙烯酯橡胶/纳米纤维素（伊娃/NCC）纳米复合材料。纳米复合材料的凝胶含量和交联密度随着NCC负载量的增加而降低。然而，伊娃的机械性能显著增强，例如，当加入2 phr的NCC时，拉伸强度和储能模量分别增加约75%和50%。这种显著的增强归因于NCC的均匀分散、NCC网络的形成以及如通过形态观察（SEM和AFM）和动态机械热分析（DMA）所证实的强EVA-NCC相互作用。此外，NCC的存在没有明显损害伊娃的光学透明度和热分解温度。乙烯-醋酸乙烯共聚物橡胶的高补强性和高吸水性可拓宽其应用范围。
Ethylene-co-vinyl acetate rubber/nanocrystalline cellulose (EVA/NCC) nanocomposites were prepared by solution mixing and static vulcanization in the presence of peroxide. The gel content and crosslink density of the nanocomposites were decreased with increasing NCC loading. However, mechanical properties of the EVA were considerably enhanced, e.g., the tensile strength and the storage modulus were increased by around 75% and 50%, respectively, when 2 phr of the NCC was incorporated. Such significant reinforcement is ascribed to a uniform dispersion of the NCC, the formation of NCC network and the strong EVA–NCC interactions as confirmed by morphology observation (SEM and AFM) and dynamic mechanical thermal analysis (DMA). Moreover, the presence of the NCC did not compromise obviously the optical clarity and the thermal decomposition temperature of the EVA. The highly reinforced ethylene-co-vinyl acetate rubber with high transparence may broaden its application range.
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