NONWOVENS MODIFIED CELLULOSE SULFATE ESTER and A METHOD FOR PRODUCING THE CELLULOSE NONWOVEN
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
下载链接：
https://www.forestdata.cn/dataDetail.html?id=5b439f84-c830-4ce1-8992-967a4b04ef3c
下载链接
链接失效反馈官方服务：
资源简介：
The present invention provides novel sulfuric acid esterification modified cellulose nanofibers. These cellulose nanofibers have an average fiber diameter of 1 nm to 500 nm; and the hydroxyl groups on the cellulose surfaces are modified by sulfuric acid esterification. The present invention also provides a method for producing cellulose nanofibers having high crystallinity and high aspect ratio and being in nano-size by means of an energy-saving chemical process that does not require physical pulverization and is carried out under mild conditions. The present invention also provides a method for producing modified cellulose nanofibers that are obtained by modifying the surfaces of these cellulose nanofibers by esterification or urethanization. The method for producing cellulose nanofibers according to the present invention comprises fibrillation of cellulose by having the cellulose impregnated with a fibrillation solution that contains dimethyl sulfoxide， at least one carboxylic acid anhydride selected from among acetic acid anhydride and propionic acid anhydride， and sulfuric acid. The present invention provides novel sulfuric acid esterification modified cellulose nanofibers. These cellulose nanofibers have an average fiber diameter of 1 nm to 500 nm; and the hydroxyl groups on the cellulose surfaces are modified by sulfuric acid esterification. The present invention also provides a method for producing cellulose nanofibers having high crystallinity and high aspect ratio and being in nano-size by means of an energy-saving chemical process that does not require physical pulverization and is carried out under mild conditions. The present invention also provides a method for producing modified cellulose nanofibers that are obtained by modifying the surfaces of these cellulose nanofibers by esterification or urethanization. The method for producing cellulose nanofibers according to the present invention comprises fibrillation of cellulose by having the cellulose impregnated with a fibrillation solution that contains dimethyl sulfoxide， at least one carboxylic acid anhydride selected from among acetic acid anhydride and propionic acid anhydride， and sulfuric acid.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
