Hydrophilicity improvement of mercerized bacterial cellulose films by polyethylene glycol graft

被引：31

作者：

da Silva, Renata ^{[1
]}

Sierakowski, Maria R. ^{[1
]}

Bassani, Helen P. ^{[1
]}

Zawadzki, Sonia F. ^{[2
]}

Pirich, Cleverton L. ^{[1
]}

Ono, Lucy ^{[3
]}

de Freitas, Rilton A. ^{[1
]}

机构：

[1] Univ Fed Parana, BioPol, Dept Chem, Polytech Ctr, POB 19081, BR-81531980 Curitiba, Parana, Brazil

[2] Univ Fed Parana, Synthet Polymers Lab, Dept Chem, Polytech Ctr, POB 19081, BR-81531980 Curitiba, Parana, Brazil

[3] Univ Fed Parana, Dept Pathol, Yasuyoshi Hayashi Lab, Polytech Ctr, POB 19081, BR-81531990 Curitiba, Parana, Brazil

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2016年 / 86卷

关键词：

Bacterial cellulose; Grafting polyethylene glycol; Hydrophilic films; ATOMIC-FORCE MICROSCOPY; POLY(ETHYLENE GLYCOL); NMR; SURFACES;

D O I：

10.1016/j.ijbiomac.2016.01.115

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 work, polyethylene glycol (PEG), of tree distinct molar masses (200, 300 and 400 g mol(-1)), was grafted onto mercerized bacterial nanocellulose (BNCm) and applied to produce nanofilms (BNCm-PEG). The products BNCm-PEG were characterized by NMR and thermal analysis. Solid-state NMR and X-ray diffraction analyses exhibited no significant differences in index of BNCm-PEG derivatives compared to BNCm, indicating that grafting reaction did not modify the BNCm crystalline structure. The apparent contact angle of the films showed that BNCm-PEG films exhibited a pronounced increase in the polar components (BNCm: 8.1 mN m(-1) vs BNCm-PEG400: 29.4 mN m(-1)), and a decrease in dispersive components (BNCm: 41.7 mN m(-1) vs BNCm-PEG400: 35.2 mN m(-1)) of the surface free energy. The BNCm-PEG films were more hydrophilic than BNCm and retained the biocompatibility with L929 fibroblast cells culture. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：599 / 605

页数：7

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