期刊
NANOSCALE
卷 8, 期 1, 页码 648-657出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr05862g
关键词
-
类别
资金
- Georg-August-Universitat Gottingen
- Fonds der Chemischen Industrie (FCI)
- China Scholarship Council (CSC)
Stimuli-responsive nanoparticles (NPs) based on sustainable polymeric feedstock still need more exploration in comparison with NPs based on synthetic polymers. In this report, stimuli-responsive NPs from novel ionic cellulose derivatives were prepared via a facile nanoprecipitation. Cellulose 10-undecenoyl ester (CUE) with a degree of substitution (DS) of 3 was synthesized by esterification of cellulose with 10-undecenoyl chloride. Then, CUE was modified by photo-induced thiol-ene reactions, in order to obtain organo-soluble ionic cellulose derivatives with DSs of similar to 3, namely cellulose 11-((3-carboxyl) ethylthio) undecanoate (CUE-MPA), cellulose 11-((2-aminoethyl) thio) undecanoate (CUE-CA), cellulose 11-(2-(2-(diethylamino) ethyl) thio) undecanoate (CUE-DEAET) and cellulose 11-(2-(2-(dimethylamino) ethyl) thio) undecanoate (CUE-DMAET). CUE-MPA could be transformed into NPs with average diameters in the range of 80-330 nm, but these NPs did not show particular stimuli-responsive properties. Moreover, the dropping technique resulted in smaller NPs than a dialysis technique. Stable NPs with average diameters in the range of 90-180 nm showing pH-responsive and switchable sizes were obtained from CUE-DEAET and CUE-DMAET possessing tertiary amines using nanoprecipitation. Thus, altering the terminal functional groups will be a new approach to prepare stimuli-responsive cellulose-derived polymeric NPs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据