Premium
Characteristics of Different Molecular Weight Chitosan Films Affected by the Type of Organic Solvents
Author(s) -
Park S.Y.,
Marsh K.S.,
Rhim J.W.
Publication year - 2002
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.2002.tb11382.x
Subject(s) - chitosan , citric acid , malic acid , acetic acid , lactic acid , plasticizer , chemistry , ultimate tensile strength , organic acid , elongation , nuclear chemistry , succinic acid , polymer chemistry , food science , organic chemistry , materials science , bacteria , biology , metallurgy , genetics
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 × 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.