Physical, structural and antimicrobial properties of poly vinyl alcohol-chitosan biodegradable films

被引：398
|
作者：
Bonilla, J. [1 ]
Fortunati, E. [2 ]
Atares, L. [1 ]
Chiralt, A. [1 ]
Kenny, J. M. [2 ,3 ]
机构：
[1] Univ Politecn Valencia, Inst Univ Ingn Alimentos Desarrollo, Valencia 46022, Spain
[2] Univ Perugia, NIPLAB, UdR INSTM, Mat Engn Ctr, I-05100 Terni, Italy
[3] CSIC, Inst Polymer Sci & Technol, E-28006 Madrid, Spain
来源：
FOOD HYDROCOLLOIDS | 2014年 / 35卷
关键词：
Poly vinyl alcohol; Chitosan; Barrier properties; Antibacterial properties; POLY(VINYL ALCOHOL); MOLECULAR-WEIGHT; BLEND; WATER; BIOCOMPATIBILITY; PERMEABILITY; SORPTION;
D O I：
10.1016/j.foodhyd.2013.07.002
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Chitosan (CH) was blended with poly vinyl alcohol (PVA) in different compositions to obtain biodegradable films (PVA90:CH10, PVA80:CH20, PVA70:CH30). Blends and neat polymer films (PVA100,CH100) were characterized for their thermal behavior, structural, mechanical and barrier properties as well as antimicrobial activity. Both polymers showed good compatibility, as demonstrated by FESEM images and thermal behavior. A reduction in crystallinity of the blend was observed as the chitosan content was increased. Moreover, chitosan addition strongly reduced the film stretchability while increased the film rigidity and resistance to fracture, mainly at 70:30 PVA:CH ratio. Additional advantages of chitosan incorporation to PVA films are the reduction of the UV-transmittance while providing antimicrobial properties. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：463 / 470
页数：8
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