School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009, Hefei, Anhui, PR China.
School of Chemistry and Chemical Engineering, Hefei University of Technology, 230009, Hefei, Anhui, PR China; Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, 230009, Hefei, Anhui, PR China.
Carbohydr Polym. 2018 Feb 1;181:885-892. doi: 10.1016/j.carbpol.2017.11.063. Epub 2017 Nov 21.
A montmorillonite@chitosan-poly (ethylene oxide) nanofibrous membrane (MMT@CPF) enhancing poly (vinyl alcohol-co-ethylene) (EVOH-MMT@CPF) composite film was developed by using a space-filling embedding method. The structure of EVOH-MMT@CPF was characterized, and the thermal stability, mechanical and barrier properties of the films were investigated. The CPF was fabricated via electrospinning technique and the self-assembly of MMT nano-platelets on CPF was achieved by the driving of electrostatic interactions between MMT nano-platelet and CPF. The experimental results indicated that the well-kept MMT@CPF after embedding in the EVOH matrix significantly improved the thermal stability and mechanical properties of the film, and also endowed the film with outstanding oxygen barrier (0.2×10cmcmcmsPa) and good moisture barrier (4.6×10gmmsatm under a relative humidity of 90%) by prolonging the tortuous paths for molecule penetration. The composite film may have a great potential application in food packaging.
采用空间填充嵌入法制备了蒙脱土@壳聚糖-聚氧化乙烯（MMT@CPF）纳米纤维膜增强聚乙烯醇-共-乙烯醇（EVOH-MMT@CPF）复合膜。对 EVOH-MMT@CPF 的结构进行了表征，并研究了薄膜的热稳定性、力学性能和阻隔性能。CPF 通过静电纺丝技术制备，MMT 纳米片在 CPF 上的自组装是通过 MMT 纳米片和 CPF 之间的静电相互作用驱动的。实验结果表明，在 EVOH 基体中嵌入保持良好的 MMT@CPF 显著提高了薄膜的热稳定性和力学性能，并通过延长分子渗透的曲折路径赋予薄膜优异的氧气阻隔性（0.2×10cmcmcmsPa）和良好的水分阻隔性（4.6×10gmmsatm，相对湿度为 90%）。该复合膜在食品包装方面可能具有很大的应用潜力。
