Heterogeneous degradation of chitosan with H2O2 catalysed by phosphotungstate

被引：39

作者：

Huang, Qun Zeng ^{[1
]}

Zhuo, Li Hong ^{[1
]}

Guo, Ying Chen ^{[1
]}

机构：

[1] Nanyang Normal Univ, Coll Chem & Pharm Engn, Nanyang, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2008年 / 72卷 / 03期

关键词：

chitosan; phosphotungstate; H2O2; catalysis; degradation;

D O I：

10.1016/j.carbpol.2007.09.022

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Phosphotungstate (PTA), an insoluble catalyst synthesized with phosphotungstic acid (PWA) and chitosan in acidic reaction system by electrostatic attraction. The catalyst was characterized by DRS and FTIR spectra. Under the catalysis of PTA, the heterogeneous degradation of chitosan with H2O2 was achieved. The effect of volume of H2O2, dosage of catalyst, reaction temperature and time on the degradation was discussed by orthogonal tests. The experimental results show that chitosan can be effectively degradated with H2O2 under the catalysis of PTA. The catalyst, PTA, may have a promising application in oxidative degradation of polymer. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：500 / 505

页数：6

共 25 条

[11] Self-curing membranes of chitosan/PAA IPNs obtained by radical polymerization:: preparation, characterization and interpolymer complexation [J].

Peniche, C ;

Argüelles-Monal, W ;

Davidenko, N ;

Sastre, R ;

Gallardo, A ;

San Román, J .

BIOMATERIALS, 1999, 20 (20) :1869-1878

[12]

Pope MT, 1983, HETEROPOLY ISOPOLY O

[13] Preparation and antibacterial activity of chitosan nanoparticles [J].

Qi, LF ;

Xu, ZR ;

Jiang, X ;

Hu, CH ;

Zou, XF .

CARBOHYDRATE RESEARCH, 2004, 339 (16) :2693-2700

[14] Effect of hydrogen peroxide treatment on the molecular weight and structure of chitosan [J].

Qin, CQ ;

Du, YM ;

Xiao, L .

POLYMER DEGRADATION AND STABILITY, 2002, 76 (02) :211-218

[15] Studies on preparation of oligoglucosamine by oxidative degradation under microwave irradiation [J].

Shao, H ;

Yang, YM ;

Zhong, QQ .

POLYMER DEGRADATION AND STABILITY, 2003, 82 (03) :395-398

[16] Oxidative depolymerization of chitosan by hydroxyl radical [J].

Tanioka, S ;

Matsui, Y ;

Irie, T ;

Tanigawa, T ;

Tanaka, Y ;

Shibata, H ;

Sawa, Y ;

Kono, Y .

BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY, 1996, 60 (12) :2001-2004

[17] Molecular parameters of chitosans depolymerized with the aid of papain [J].

Terbojevich, M ;

Cosani, A ;

Muzzarelli, RAA .

CARBOHYDRATE POLYMERS, 1996, 29 (01) :63-68

[18] The depolymerization mechanism of chitosan by hydrogen peroxide [J].

Tian, F ;

Liu, Y ;

Hu, K ;

Zhao, BY .

JOURNAL OF MATERIALS SCIENCE, 2003, 38 (23) :4709-4712

[19] Acid hydrolysis of chitosans [J].

Vårum, KM ;

Ottoy, MH ;

Smidsrod, O .

CARBOHYDRATE POLYMERS, 2001, 46 (01) :89-98

[20]

Vikhoreva G.A., 1997, POLYM SCI SER, V39, P617

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