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 |
DOI | 10.1016/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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