中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Inverse solubility of chitin/chitosan in aqueous alkali solvents at low temperature

文献类型:期刊论文

作者Feng, Jiwen2; Wang, Liying2; Gong, Pei1,2; Liu, Biaolan2; Yan, Xiaoshuang1,2; Wu, Shuaishuai1,2; Ru, Geying2
刊名CARBOHYDRATE POLYMERS
出版日期2019-02-15
卷号206页码:487-492
ISSN号0144-8617
关键词Chitin Chitosan Dissolution Cation effect NMR
DOI10.1016/j.carbpol.2018.11.016
英文摘要The low-temperature dissolving mechanism of chitin/chitosan in the alkali (LiOH, NaOH and KOH) aqueous solvents has not been well established yet As revealed by our XRD and NMR methods, the prepared deacetylated chitins can be categorized as chitin (DA = 0.94-0.74), chitosan I (DA = 0.53-0.25) and chitosan II (DA < 0.25). Aqueous alkali exhibits fully different dissolving power in the above three regions, i.e., KOH > NaOH > > LiOH for chitin, KOH approximate to LiOH approximate to NaOH for chitosan I, and inverse LiOH > > KOH > NaOH for chitosan II. While in the two-alkali mixed solvent, NaOH or KOH can destroy the interaction of LiOH with D9 (chitosan II region) in the order of NaOH > > KOH, but LiOH cannot destroy the interaction of KOH with raw chitin. The varied solubility of chitin/chitosan in alkali solvent is suggested to be from the cation's preferential interaction rather than OH ion and low temperature.
WOS关键词CELLULOSE DISSOLUTION ; CHITOSAN ; CHITIN ; ACETYLATION ; DEGRADATION ; MECHANISM ; CHLORIDE ; WATER
资助项目National Natural Science Foundation of China[21474130]
WOS研究方向Chemistry ; Polymer Science
语种英语
出版者ELSEVIER SCI LTD
WOS记录号WOS:000452982700055
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://ir.wipm.ac.cn/handle/112942/13508]  
专题中国科学院武汉物理与数学研究所
通讯作者Feng, Jiwen
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan, Wuhan 430071, Hubei, Peoples R China
推荐引用方式
GB/T 7714
Feng, Jiwen,Wang, Liying,Gong, Pei,et al. Inverse solubility of chitin/chitosan in aqueous alkali solvents at low temperature[J]. CARBOHYDRATE POLYMERS,2019,206:487-492.
APA Feng, Jiwen.,Wang, Liying.,Gong, Pei.,Liu, Biaolan.,Yan, Xiaoshuang.,...&Ru, Geying.(2019).Inverse solubility of chitin/chitosan in aqueous alkali solvents at low temperature.CARBOHYDRATE POLYMERS,206,487-492.
MLA Feng, Jiwen,et al."Inverse solubility of chitin/chitosan in aqueous alkali solvents at low temperature".CARBOHYDRATE POLYMERS 206(2019):487-492.

入库方式: OAI收割

来源:武汉物理与数学研究所

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