Characteristics of different molecular weight chitosan films affected by the type of organic solvents

被引：248
作者：
Park, SY
Marsh, KS
Rhim, JW
机构：
[1] Mokpo Natl Univ, Dept Food Engn, Choongnam, South Korea
[2] Mokpo Natl Univ, Food Ind Technol Res Ctr, Choongnam, South Korea
[3] WISSH, Central, SC USA
来源：
JOURNAL OF FOOD SCIENCE | 2002年 / 67卷 / 01期
关键词：
chitosan films; molecular weight; organic acids; tensile strength; elongation; Water Vapor Permeability; Oxygen Permeability;
D O I：
10.1111/j.1365-2621.2002.tb11382.x
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
Chitosan films were prepared using 3 chitosan molecular weights and 4 organic acid solvents without plasticizer. Tensile strength (TS) and elongation (E) ranged from 6.7 to 150.2 MPa, and from 4.1 to 117.8%, respectively. Water vapor permeability (WVP) and oxygen permeability (OP) ranged from 0.3 to 0.7 ng.m/m(2).s.Pa and OP from 0.4 to 5.8 x 10(-8) cc/m(2).day.atm, respectively. TS increased with chitosan molecular weight. Acetic acid resulted in the toughest films followed by malic, lactic, and citric acid, respectively. Films prepared with citric acid had the highest E values. WVP was not influenced significantly by the molecular weight of chitosan. OP of films prepared with malic acid was the lowest, followed by acetic, lactic, and citric acid.
引用
收藏
页码：194 / 197
页数：4
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