A novel polyacrylamide nanocomposite hydrogel reinforced with natural chitosan nanofibers

被引：211

作者：

Zhou, Chengjun ^{[1
]}

Wu, Qinglin ^{[1
]}

机构：

[1] Louisiana State Univ, Ctr Agr, Sch Renewable Nat Resources, Baton Rouge, LA 70803 USA

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2011年 / 84卷 / 01期

关键词：

Chitosan nanofibers; Nanocomposite; Polyacrylamide; Hydrogel; Compression strength; Swelling; Rheology; POLYMER NETWORK HYDROGELS; HIGH MECHANICAL STRENGTH; WALLED CARBON NANOTUBES; SWELLING PROPERTIES; HYBRID HYDROGELS; IPN HYDROGELS; CELLULOSE; POLY(N-ISOPROPYLACRYLAMIDE); NANOCRYSTALS; FABRICATION;

D O I：

10.1016/j.colsurfb.2010.12.030

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Polyacrylamide (PAM) was used as a matrix material for fabricating novel nanocomposite hydrogels reinforced with natural chitosan nanofibers (CNFs) via in situ free-radical polymerization. The nanocomposite's structure, strength, morphology and rheological properties were investigated. The results showed that the CNFs had a strong interaction with PAM through hydrogen and covalent bondings. The CNFs acted as a multifunctional cross-linker and a reinforcing agent in the hydrogel system. The compression strength and storage modulus of the nanocomposite hydrogels were significantly higher than those of the pure PAM hydrogels and the corresponding PAM/chitosan semi-interpenetrating polymer network (PAM-SIPN) hydrogels. The swelling ratio (SR) of the nanocomposite hydrogels was lower than that of the PAM hydrogel, but was similar to that of the PAM-SIPN hydrogel. Among the CNF contents used, the 1.5 wt% CNF loading level showed the best combined swelling and mechanical properties for the hydrogels. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：155 / 162

页数：8

共 56 条

[1] Characterisation of carboxymethyl cellulose and polyacrylamide graft copolymer [J].

Biswal, DR ;

Singh, RP .

CARBOHYDRATE POLYMERS, 2004, 57 (04) :379-387

[2] A model of the fracture of double network gels [J].

Brown, Hugh R. .

MACROMOLECULES, 2007, 40 (10) :3815-3818

[3] Anisotropic swelling and mechanical behavior of composite bacterial cellulose-poly(acrylamide or acrylamide-sodium acrylate) hydrogels [J].

Buyanov, A. L. ;

Gofman, I. V. ;

Revel'skaya, L. G. ;

Khripunov, A. K. ;

Tkachenko, A. A. .

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS, 2010, 3 (01) :102-111

[4] Hydrogels for Soft Machines [J].

Calvert, Paul .

ADVANCED MATERIALS, 2009, 21 (07) :743-756

[5] A study in the adsorption of Fe2+ and NO3- on pine needles based hydrogels [J].

Chauhan, Ghanshyam S. ;

Chauhan, Sandeep ;

Kumar, Sunil ;

Kumari, Anita .

BIORESOURCE TECHNOLOGY, 2008, 99 (14) :6464-6470

[6] Chitosan nanofiber scaffold enhances hepatocyte adhesion and function [J].

Chu, Xue-Hui ;

Shi, Xiao-Lei ;

Feng, Zhang-Qi ;

Gu, Zhong-Ze ;

Ding, Yi-Tao .

BIOTECHNOLOGY LETTERS, 2009, 31 (03) :347-352

[7] CHARACTERIZATION OF INHOMOGENEOUS POLYACRYLAMIDE HYDROGELS [J].

COHEN, Y ;

RAMON, O ;

KOPELMAN, IJ ;

MIZRAHI, S .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1992, 30 (09) :1055-1067

[8] Hydrogels for tissue engineering: scaffold design variables and applications [J].

Drury, JL ;

Mooney, DJ .

BIOMATERIALS, 2003, 24 (24) :4337-4351

[9] Electrospinning of chitosan dissolved in concentrated acetic acid solution [J].

Geng, XY ;

Kwon, OH ;

Jang, JH .

BIOMATERIALS, 2005, 26 (27) :5427-5432

[10] Double-network hydrogels with extremely high mechanical strength [J].

Gong, JP ;

Katsuyama, Y ;

Kurokawa, T ;

Osada, Y .

ADVANCED MATERIALS, 2003, 15 (14) :1155-+

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