化学
复合数
核化学
食品包装
乳酸
乙烯醇
复合材料
活性包装
食品科学
傅里叶变换红外光谱
热稳定性
生物高聚物
淀粉
增塑剂
钠
纳米复合材料
作者
Lidan Zhang,Hualin Wang,Chongyang Jin,Ru Zhang,Linlin Li,Xingjiang Li,Shaotong Jiang
标识
DOI:10.1016/j.ifset.2017.06.007
摘要
Abstract A sodium lactate loaded chitosan-polyvinyl alcohol/montmorillonite (NaL-CS/PVA/MMT) barrier film with antibacterial activity was developed by coating method and the effectiveness and diffusion behavior were investigated. An intercalated structure was achieved for CS/PVA/MMT film and the interfacial interactions among CS, PVA and MMT were intermolecular hydrogen bonds. An appropriate increase of MMT contents (15 wt% and below) could achieve a remarkable enhancement in tensile strength and Young's modulus, meanwhile, the water vapor, oxygen and carbon dioxide barrier properties of the films were also significantly improved. The NaL-CS/PVA/MMT film exhibited good antibacterial activity against E. coli and well controlled release of NaL. Moreover, the diffusions of NaL from films were dependent on the pH value of aqueous solution and ionic strength, and the initial diffusions ( M t / M ∞
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