Carboxymethyl chitosan has sensitive two-way CO2-responsive hydrophilic/hydrophobic feature
學年 109
學期 1
出版(發表)日期 2020-08-01
作品名稱 Carboxymethyl chitosan has sensitive two-way CO2-responsive hydrophilic/hydrophobic feature
作品名稱(其他語言)
著者 Yeong-Tarng Shieh; Yu-De Chen; Trong-Ming Don
單位
出版者
著錄名稱、卷期、頁數 Carbohydrate Polymers 241, 116408
摘要 Carboxymethyl chitosans (CMC) with various degrees of carboxymethyl substitution were prepared and investigated on their changes in water solubility in response to bubbling of CO2 or N2 as a function of the relative concentrations of COOH and NH2 side groups. When having similar concentrations of COOH and NH2, the produced CMC was water soluble at pH 10 and consecutively experienced peculiar dissolution-to-precipitation-to-dissolution during bubbling of CO2, and experienced reverse dissolution-to-precipitation-to-dissolution process during subsequently bubbling of N2. With the concentration of COOH much higher than that of NH2, the water soluble CMC at pH 10 exhibited no phase changes in response to bubbling of CO2 and N2. This newly developed CMC solution system with novel CO2 responsive amphiphilic feature has a potential use as a CO2 switchable surfactant to control interface of mixtures of hydrophilic and hydrophobic species in emulsification/demulsification applications.
關鍵字 Chitosan;N, O-carboxymethyl chitosan;CO2 responsiveness;Amphiphilic properties
語言 en
ISSN 1879-1344
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Shieh, Y.-T.
審稿制度
國別 GBR
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/119337 )