Electrolytic conductivity behaviors and solution conformations of chitosan in different acid solutions
文献类型：期刊论文
| 作者 | Li, QX; Song, BZ; Yang, ZQ; Fan, HL |
| 刊名 | CARBOHYDRATE POLYMERS
 |
| 出版日期 | 2006-02-03 |
| 卷号 | 63期号:2页码:272-282 |
| 关键词 | chitosan polyelectrolyte electrolytic conductivity solution conformation activation energy for conduction |
| ISSN号 | 0144-8617 |
| 其他题名 | Carbohydr. Polym. |
| 中文摘要 | Electrolytic conductivity behavior of chitosan in strong acid solution (0. 1 M hydrochloric acid) and in weak acid solution (0. 1 M propionic acid, 0.1 M acetic acid and 0.1 M formic acid) and its effective factors such as temperature, salt, degree of deacetylation and molecule weight of chitosan were investigated. The inner structure of chitosan films formed from their above different acid solutions were observed with a scanning electron microscope (SEM). It was found that the electrolytic conductivity behaviors of chitosan in the above two-type acid solutions were absolutely different and were all concentration-dependent from which we can deduce that chitosan chains interact with carboxylic acid molecules strongly in weak acid solutions and entangle strongly with each other while chitosan chains have weak impact on counterions chlorions in hydrochloric acid solution and they become extended coils because of electrostatic repulsion. The structure of chitosan films observed from their SEM photos supports this conclusion firmly. Unchanging activation energy for conduction of chitosan in carboxylic acid solution after a certain concentration also demonstrates that there is order structure formed by chitosan and carboxylic acid molecules. This is the first paper supplying detailed electrolytic data about chitosan solution; therefore, it will stimulate further theoretical studies and promote the application of chitosan. (c) 2005 Elsevier Ltd. All rights reserved. |
| 英文摘要 | Electrolytic conductivity behavior of chitosan in strong acid solution (0. 1 M hydrochloric acid) and in weak acid solution (0. 1 M propionic acid, 0.1 M acetic acid and 0.1 M formic acid) and its effective factors such as temperature, salt, degree of deacetylation and molecule weight of chitosan were investigated. The inner structure of chitosan films formed from their above different acid solutions were observed with a scanning electron microscope (SEM). It was found that the electrolytic conductivity behaviors of chitosan in the above two-type acid solutions were absolutely different and were all concentration-dependent from which we can deduce that chitosan chains interact with carboxylic acid molecules strongly in weak acid solutions and entangle strongly with each other while chitosan chains have weak impact on counterions chlorions in hydrochloric acid solution and they become extended coils because of electrostatic repulsion. The structure of chitosan films observed from their SEM photos supports this conclusion firmly. Unchanging activation energy for conduction of chitosan in carboxylic acid solution after a certain concentration also demonstrates that there is order structure formed by chitosan and carboxylic acid molecules. This is the first paper supplying detailed electrolytic data about chitosan solution; therefore, it will stimulate further theoretical studies and promote the application of chitosan. (c) 2005 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Applied ; Chemistry, Organic ; Polymer Science |
| 研究领域[WOS] | Chemistry ; Polymer Science |
| 关键词[WOS] | AQUEOUS-SOLUTION ; LIGHT-SCATTERING ; ASSOCIATION ; RELEASE ; SALTS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000235358200017 |
| 公开日期 | 2013-10-24 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3967]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Natl Engn Res Ctr Biotechnol Beijing, Inst Proc Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, QX,Song, BZ,Yang, ZQ,et al. Electrolytic conductivity behaviors and solution conformations of chitosan in different acid solutions[J]. CARBOHYDRATE POLYMERS,2006,63(2):272-282. |
| APA | Li, QX,Song, BZ,Yang, ZQ,&Fan, HL.(2006).Electrolytic conductivity behaviors and solution conformations of chitosan in different acid solutions.CARBOHYDRATE POLYMERS,63(2),272-282. |
| MLA | Li, QX,et al."Electrolytic conductivity behaviors and solution conformations of chitosan in different acid solutions".CARBOHYDRATE POLYMERS 63.2(2006):272-282. |
入库方式： OAI收割
来源：过程工程研究所
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