Chitosan conjugated with deoxycholic acid and gallic acid: A novel biopolymer-based additive antioxidant for polyethylene

被引：54

作者：

Pasanphan, Wanvimol ^{[1
]}

Buettner, Garry R. ^{[2
]}

Chirachanchai, Suwabun ^{[1
,3
]}

机构：

[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok 10330, Thailand

[2] Univ Iowa, ESR Facil, Iowa City, IA 52242 USA

[3] Chulalongkorn Univ, Ctr Chitin Chitosan Biomat, Bangkok 10330, Thailand

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 109卷 / 01期

关键词：

chitosan; deoxycholic acid; gallic acid; bioadditive; polyethylene;

D O I：

10.1002/app.27953

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Chitosan, as a novel bioadditive antioxidant for commodity polymer, is proposed. Chitosan is successfully conjugated with deoxycholic acid and gallic acid (chitosan-DC-GA) via a simple reaction using the 1-ethyl-3-(3'-dimethylaminopropyl) carbodiimide/N-hydroxysuccinimide conjugating agent at room temperature in a heterogeneous system. Chitosan-DC-GA shows a deoxycholic acid (DC) and gallic acid (GA) content of about 40% each. Chitosan-DC-GA exhibits DPPH radical scavenging ability with EC50 1 mg mL(-1) based on the EPR technique evaluation. A model case study of chitosan-DC-GA with low-density polyethylene (LDPE) confirms improvement in compatibility, as seen from the sheet clarity, as well as the good dispersion of chitosan-DC-GA in LDPE matrices, as observed by scanning electron microscope. (C) 2008 Wiley Periodicals, Inc.

引用

页码：38 / 46

页数：9

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