食品科学2018，Vol.39Issue(7)：71-77,7.DOI:10.7506/spkx1002-6630-201807011
基于静电相互作用的聚丙烯酸钠强化胶原纤维膜
Collagen Membrane Strengthened by Sodium Polyacrylate Based on Electrostatic Interaction
摘要
Abstract
In order to improve the properties of collagen films, based on the electrostatic interaction between electronegative sodium polyacrylate and electropositive turgid collagen fibers, we evaluated the impact of adding different amounts of sodium polyacrylate (0.1%-1.0%) on membrane properties. The results showed that Zeta potential of the film-forming suspension significantly changed with the increase of sodium polyacrylate concentration (P < 0.05) suggesting enhanced electrostatic interaction. Sodium polyacrylate addition decreased the elongation at break, light transparency and water vapor permeability (the minimum value reached 1.30 × 10-12g/(cm·s·Pa)) of the films and increased the thermal stability (up to 1.50 folds higher than that of pure films), but it had no impact on film thickness. Scanning electron microscopic analysis showed that the composite films were more compact. Addition of 0.3% sodium polyacrylate showed better film properties:tensile strength, elongation at break, light transparency and water vapor permeability were 37.60 MPa, 14.20%, 48.70% and 1.30 × 10-12g/(cm·s·Pa), respectively. In addition, the conformational changes of the composite films were confirmed by Fourier transform infrared spectroscopy. The enhanced effect of sodium polyacrylate and collagen due to electrostatic interaction showed that appropriate addition of sodium polyacrylate could effectively improve collagen membrane properties.关键词
胶原蛋白/聚丙烯酸钠/静电相互作用/性能/可食膜Key words
collagen/sodium polyacrylate/electrostatic interaction/properties/edible films分类
轻工纺织引用本文复制引用
王亚斌,王稳航..基于静电相互作用的聚丙烯酸钠强化胶原纤维膜[J].食品科学,2018,39(7):71-77,7.基金项目
国家高技术研究发展计划(863计划)项目(2013AA102204) （863计划）
食品生物技术教育部工程研究中心(天津科技大学)应用化项目(SPZX004) （天津科技大学）
