Facile preparation of collagen fiber-glycerol-carboxymethyl cellulose composite film by immersing method

Jingmin Wu; Fei Liu; Zhe Yu; Yun Ma; H Douglas Goff; Jianguo Ma; Fang Zhong

doi:10.1016/j.carbpol.2019.115429

Facile preparation of collagen fiber-glycerol-carboxymethyl cellulose composite film by immersing method

Carbohydr Polym. 2020 Feb 1:229:115429. doi: 10.1016/j.carbpol.2019.115429. Epub 2019 Oct 3.

Authors

Jingmin Wu¹, Fei Liu², Zhe Yu¹, Yun Ma¹, H Douglas Goff³, Jianguo Ma¹, Fang Zhong⁴

Affiliations

¹ State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
² State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China. Electronic address: feiliu@jiangnan.edu.cn.
³ Department of Food Science, University of Guelph, Guelph, ON N1G 2W1, Canada.
⁴ State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China. Electronic address: fzhong@jiangnan.edu.cn.

PMID: 31826431
DOI: 10.1016/j.carbpol.2019.115429

Abstract

Carboxymethyl cellulose (CMC) and glycerol were added by immersing neutralized collagen fiber paste into CMC/glycerol aqueous solutions with different mass ratios, forming composite films. CMC decreased the glycerol adsorption by 49.5%. The presence of CMC formed rougher film surface and more compact internal structure. Glycerol increased the distances between collagen molecules and decreased the relative triple helix contents. The tensile strength and Young's modulus of film in dry condition maximum respectively increased by 125% and 277% with the immersion in CMC (1.5%)/glycerol (4%) solution, compared to the sample immersed into pure glycerol solution, but mechanical properties decreased at high glycerol content. Besides, lower wet mechanical strength was observed as the addition of CMC, corresponding to the higher water swelling ratio of film. CMC also improved the shrinkage stability under boiling and the thermostability of film at a fixed glycerol level, but higher glycerol content caused the decrease of denaturation temperature of film.

Keywords: Carboxymethyl cellulose; Carboxymethyl cellulose (PubChem CID: 23706213); Collagen fiber film; Glycerol; Glycerol (PubChem CID: 753); Mechanical and physical properties; Microstructure.