摘要
为探索新型可降解膜材料的制备方法及其性能,以柳橙皮为成膜基材,海藻酸钠和羧甲基纤维素钠为增稠剂,甘油为增塑剂,采用流延法制备柳橙皮膜,并探究了柳橙皮浓度、增稠剂浓度、增塑剂浓度对膜力学性能和阻隔性能的影响。结果表明:柳橙皮浓度为1.5%,海藻酸钠浓度为0.1%,羧甲基纤维素钠浓度为0.2%,甘油浓度为0.2%,此时膜的综合性能最佳。其主要指标:抗拉强度为24.08 MPa,断裂伸长率为15.73%,水蒸气透过系数为1.686×10^(-12)g·cm·cm^(-2)·s^(-1)·Pa^(-1)。研究表明,柳橙皮成膜性较好,且具有良好的力学性能和阻隔性能,是一种具有开发潜力的新型包装材料。
To assess the preparation and performance of the a new biodegradable film, tape casting was applied to prepare a citrus pericarp based film using sodium alginate and carboxymethyl cellulose as a thickening agent, and glycerin as a plasticizer. The influence of different concentrations of citrus pericarp, thickening agent, and plasticizer on the mechanical and barrier properties of the film were investigated. As a result, each index was present well while citrus pericarp mass concentration was 1.5% , sodium alginate mass concentration was 0.1% , carboxymethyl cellulose mass concentration was 0.2% and glycerin mass concentration was 0.2% . At this composition,the tensile strength was 24.08 MPa, the elongation of the film at the breaking point was 15.73% , and the water vapor permeability was 1.686 ×10^-12 g·cm·cm^-2·s^-1·Pa^-1. In conclusion, the citrus pericarp is shown to be a good base for a biodegradable film.It produces a film with good mechanical and barrier properties and has promising potential for the production of new packaging materials.
作者
李见森
赵江欣
蒋成
张旭
吴贺君
陈安均
LI Jian-sen;ZHAO Jiang-xin;JIANG Cheng;ZHANG Xu;WU He-jun;CHEN An-jun(College of Food Science, Sichuan Agricultural University, Yaan 625014, China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2018年第1期165-171,共7页
Journal of Agro-Environment Science
基金
国家科技支撑计划课题(2012AA101606-03)~~
关键词
柳橙皮
可降解膜
力学性能
阻隔性能
citrus pericarp
biodegradable film
mechanical properties
barrier properties
