Effect of chemical cross-linking on gelatin membrane solubility with a non-toxic and non-volatile agent: Terephthalaldehyde

被引：40

作者：

Biscarat, Jennifer ^{[1
]}

Galea, Benjamin ^{[1
]}

Sanchez, Jose ^{[1
]}

Pochat-Bohatier, Celine ^{[1
]}

机构：

[1] Univ Montpellier 2, IEM, UMR 5635, CNRS ENSCM UM2, F-34095 Montpellier 5, France

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2015年 / 74卷

关键词：

Gelatin; Terephthalaldehyde; Cross-linking; Rheology; Water solubility; MECHANICAL-PROPERTIES; RHEOLOGICAL CHARACTERIZATION; PHYSICAL-PROPERTIES; THERMAL-PROPERTIES; FILMS; GLUTARALDEHYDE; BARRIER; NETWORK; TISSUES; GELS;

D O I：

10.1016/j.ijbiomac.2014.11.022

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

In this paper, terephthalaldehyde (TPA) is proposed as non-toxic and non-volatile gelatin cross-linker. Optimal cross-linking parameters (TPA/gelatin ratio, temperature) were first determined from in situ rhelogical measurements on gelatin solutions and from chemical tests with 2,4,6-trinitrobenzenesulfonic acid (TNBS assays) on gelatin gel. The highest cross-linking ratio was achieved for a concentration of 0.005 gTPA/g gelatin at 60 degrees C. The impact of TPA cross-linking on gelatin membrane functional properties (water swelling ratio, water vapor sorption and mechanical properties) was measured. TPA cross-linking increased 17 times the liquid water resistance duration of gelatin films, and delayed the entry of vapor water in the polymer matrix for 7 days, indicating that TPA increased the hydrophobic character of the gelatin matrix. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：5 / 11

页数：7

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