文献类型：期刊文献

英文题名：Preparation and Characterization of Porous Cellulose Acetate Nanofiber Hydrogels

作者：Jiang, Lijie[1,2] Huang, Xingyu[3] Tian, Chaochao[4] Zhong, Yidan[1,2] Yan, Ming[1,2] Miao, Chen[1,2] Wu, Ting[5] Zhou, Xiaofan[1,2]

第一作者：Jiang, Lijie

通信作者：Zhou, XF[1];Zhou, XF[2];Wu, T[3]

机构：[1]Nanjing Forestry Univ, Natl Prov Joint Engn Res Ctr Electromech Prod Pack, Nanjing 210037, Peoples R China;[2]Nanjing Forestry Univ, Coll Light Ind & Food, Jiangsu Prov Key Lab Pulp & Paper Sci & Technol, Nanjing 210037, Peoples R China;[3]Zhejiang Univ Sci & Technol, Key Lab Recycling & Ecotreatment Waste Biomass Zhe, Hangzhou 310023, Peoples R China;[4]Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Peoples R China;[5]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat Jiangsu Prov, Nanjing 210042, Peoples R China

年份：2023

卷号：9

期号：6

外文期刊名：GELS

收录：;Scopus(收录号：2-s2.0-85164024311);WOS:【SCI-EXPANDED(收录号:WOS:001014653600001)】；

基金：Postgraduate Research & Practice Innovation Program of Jiangsu Province (KYCX21_0884); Foundation of Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education of China (KF202001).

语种：英文

外文关键词：cellulose acetate; hydrogel; porous; nanofiber

摘要：The currently reported methods for preparing cellulose acetate hydrogels use chemical reagents as cross-linking agents, and the prepared ones are non-porous structured cellulose acetate hydrogels. Nonporous cellulose acetate hydrogels limit the range of applications, such as limiting cell attachment and nutrient delivery in tissue engineering. This research creatively proposed a facile method to prepare cellulose acetate hydrogels with porous structures. Water was added to the cellulose acetate-acetone solution as an anti-solvent to induce the phase separation of the cellulose acetate-acetone solution to obtain a physical gel with a network structure, where the cellulose acetate molecules undergo re-arrangement during the replacement of acetone by water to obtain hydrogels. The SEM and BET test results showed that the hydrogels are relatively porous. The maximum pore size of the cellulose acetate hydrogel is 380 nm, and the specific surface area reaches 62 m(2)/g. The porosity of the hydrogel is significantly higher than that of the cellulose acetate hydrogel reported in the previous literature. The XRD results show that the nanofibrous morphology of cellulose acetate hydrogels is caused by the deacetylation reaction of cellulose acetate.