Yang Xuyu, Ye Yingying, Liu Jiayan, Liu Weijun, Xiong Xianqiang, He Zhicai
College of Pharmaceutical and Chemical Engineer, Taizhou University Taizhou Zhejiang 318000 P. R. China
RSC Adv. 2023 Feb 6;13(7):4746-4753. doi: 10.1039/d2ra07182g. eCollection 2023 Jan 31.
To improve the thermal, mechanical, and barrier properties of ethylene vinyl alcohol copolymer (EVOH)/aramid pulp (AP), graphene oxide (GO) was used as a compatilizer, enhancer, and barrier to fabricate EVOH-based composites. The results showed that graphene oxide serves as an ideal compatilizer to reinforce the interfacial action between the EVOH matrix and aramid pulp. The EVOH/AP/GO composite presented the best combination of thermal stability, tensile strength, oxygen barrier, and heat deformation temperature by adding only 1 wt% graphene oxide, compared to those of pure EVOH. Moreover, both scanning electron microscopy (SEM) and polarized optical microscopy (POM) photographs demonstrated that the aramid pulp dispersed homogeneously into the EVOH resin with the addition of 1 wt% graphene oxide. Our work provides a novel and facile way for producing a prominent EVOH-based composite, which can be potentially used in packaging fields in the future.
为了改善乙烯-乙烯醇共聚物（EVOH）/芳纶浆粕（AP）的热性能、机械性能和阻隔性能，氧化石墨烯（GO）被用作增容剂、增强剂和阻隔剂来制备基于EVOH的复合材料。结果表明，氧化石墨烯是一种理想的增容剂，可增强EVOH基体与芳纶浆粕之间的界面作用。与纯EVOH相比，通过仅添加1 wt%的氧化石墨烯，EVOH/AP/GO复合材料在热稳定性、拉伸强度、氧气阻隔性和热变形温度方面表现出最佳的综合性能。此外，扫描电子显微镜（SEM）和偏光显微镜（POM）照片均表明，添加1 wt%氧化石墨烯后，芳纶浆粕均匀地分散在EVOH树脂中。我们的工作为制备优异的基于EVOH的复合材料提供了一种新颖且简便的方法，该复合材料未来有望应用于包装领域。
