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学科主题: Polymer Science
题名: Preparation and Characterization of Quaternized Chitosan Under Microwave Irradiation
作者: Luo, JW ; Wang, XY ; Xia, B ; Wu, J
通讯作者: xyw@scut.edu.cn
关键词: Quaternized chitosan ; microwave irradiation ; conventional heating ; thermal stability
刊名: JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY
发表日期: 2010
卷: 47, 期:9, 页:952-956
收录类别: sci
部门归属: [Wang, Xiaoying] S China Univ Technol, State Key Lab Pulp & Paper Engn, Sch Light Ind & Food, Guangzhou 510640, Guangdong, Peoples R China; [Luo, Jiwen; Xia, Bin] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou, Guangdong, Peoples R China; [Wu, Jun] Chinese Acad Sci, Key Lab Marine Bioresources Sustainable Utilizat, S China Sea Inst Oceanol, Guangzhou, Guangdong, Peoples R China
项目归属: LMB
摘要: For the first time, N-(2-hydroxyl) propyl-3-trimethyl ammonium chitosan chloride (HTCC) was prepared through a fast, easy and efficient method with the assistance of microwave irradiation, and the quaternized chitosan was also degraded via the microwave irradiation. A comparative study was performed by using the conventional heating method to prepare HTCC. The structure and property of the quaternized chitosan obtained by these two methods were characterized by GPC, XRD, FTIR, NMR, TG and elemental analysis. It was shown that quaternized chitosan was successfully prepared within 50 min via microwave irradiation method, while a much longer time of 6-7 h was needed with the conventional heating method. The substitutions both occurred on the C2 position of chitosan with the two different methods, and their HTCC products had weight average similar molecular weight (Mw), structure and thermal stability. The HTCC prepared by the microwave irradiation method had a little lower degree of substitution (DS) than those prepared via conventional heating with the same mole ratio (6: 1) of the intermediate to chitosan. The degradation study showed that the Mw of HTCC decreased rapidly from 4.6 x 10(5) to 1.1 x 10(5) in 1 h under microwave irradiation, while it only decreased from 4.6 x 10(5) to 2.1 x 10(5) in 1 h through conventional heating degradation. These results revealed that microwave irradiation is a more efficient and environment-friendly way to obtain the water-soluble chitosan derivatives and their degraded products.
原文出处: 查看原文
WOS记录号: WOS:000280546700010
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/3790
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Luo, JW; Wang, XY; Xia, B; Wu, J.Preparation and Characterization of Quaternized Chitosan Under Microwave Irradiation,JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY,2010,47(9):952-956
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文件名: Preparation and Characterization of Quaternized Chitosan Under Microwave Irradiation .pdf
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