公开(公告)号：US20140299019A1

公开(公告)日：2014-10-09

申请号：US14361861

申请日：2012-11-06

申请人： Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences

发明人： Min Wu ,  Yong Huang ,  Shigenori Kuga ,  Pei Huang

IPC分类号： C08L1/12

CPC分类号： C08L1/12 ,  C08B3/00 ,  C08B3/20 ,  C08B16/00 ,  C08L1/10 ,  C08L2201/56 ,  C08L2205/16 ,  D01F2/28

摘要： A method for preparing stably dispersed cellulose nanofibers comprises the following steps: 1) mixing cellulose and an organic solvent, the percentage of the cellulose being 1% to 15% in weight; 2) adding an esterification agent into the resultant mixture of step 1), the molar ratio of the esterification agent to the cellulose being from 1:0.1 to 4; and 3) physically breaking the resultant mixture of step 2) until a suspension liquid with stably dispersed cellulose nanofibers of 2-1000 nm in diameter and 10-100 μm in length is obtained, an esterification reaction of hydroxyl group(s) on the surface of cellulose fibers occurring at the time of the breaking. Also disclosed are dispersed cellulose nanofibers with improved compatibility to the matrix than the untreated cellulose and an improved strength of the composite materials.

摘要翻译： 制备稳定分散的纤维素纳米纤维的方法包括以下步骤：1）将纤维素和有机溶剂混合，纤维素的重量百分比为1％至15％; 2）在步骤1）的所得混合物中加入酯化剂，酯化剂与纤维素的摩尔比为1:0.1至4; 和3）物理地破碎步骤2）的所得混合物，直到获得具有直径为2-1000nm和长度为10-100μm的稳定分散的纤维素纳米纤维的悬浮液，表面上的羟基的酯化反应 的纤维素纤维在断裂时发生。 还公开了与未处理的纤维素相比，具有改善的与基质相容性的分散的纤维素纳米纤维和复合材料的改进的强度。

公开(公告)号：US09725583B2

公开(公告)日：2017-08-08

申请号：US14361861

申请日：2012-11-06

申请人： Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences

发明人： Min Wu ,  Yong Huang ,  Shigenori Kuga ,  Pei Huang

IPC分类号： C08L1/12 ,  D01F2/28 ,  C08B3/00 ,  C08B3/20 ,  C08B16/00 ,  C08L1/10

CPC分类号： C08L1/12 ,  C08B3/00 ,  C08B3/20 ,  C08B16/00 ,  C08L1/10 ,  C08L2201/56 ,  C08L2205/16 ,  D01F2/28

摘要： A method for preparing stably dispersed cellulose nanofibers comprises the following steps: 1) mixing cellulose and an organic solvent, the percentage of the cellulose being 1% to 15% in weight; 2) adding an esterification agent into the resultant mixture of step 1), the molar ratio of the esterification agent to the cellulose being from 1:0.1 to 4; and 3) physically breaking the resultant mixture of step 2) until a suspension liquid with stably dispersed cellulose nanofibers of 2-1000 nm in diameter and 10-100 μm in length is obtained, an esterification reaction of hydroxyl group(s) on the surface of cellulose fibers occurring at the time of the breaking. Also disclosed are dispersed cellulose nanofibers with improved compatibility to the matrix than the untreated cellulose and an improved strength of the composite materials.

公开(公告)号：US20170027842A1

公开(公告)日：2017-02-02

申请号：US15303101

申请日：2015-04-09

申请人： Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences

发明人： Min Wu ,  Yong Huang ,  Mengmeng Zhao

IPC分类号： A61K8/73 ,  C09D7/12 ,  C08J3/12 ,  C09D5/00 ,  A61K8/02 ,  A61Q17/04

CPC分类号： A61K8/731 ,  A61K8/0254 ,  A61K2800/412 ,  A61Q17/04 ,  C08J3/12 ,  C08J2301/02 ,  C09D5/00 ,  C09D7/69 ,  C09D7/70 ,  D04H1/425 ,  D21B1/063 ,  D21H21/52

摘要： The present invention discloses an anti-ultraviolet flaky cellulose material which is characterized in that the cellulose material has a flaky morphology, a particle width of 5-200 μm and a thickness of 0.01-10 μm, and the flaky cellulose material can block transmission of ultraviolet ray within the range of UVA (320-400 nm) and UVB (280-320 nm). Meanwhile, the present invention also provides a preparation method of the flaky cellulose material and a use thereof.

摘要翻译： 本发明公开了一种抗紫外线片状纤维素材料，其特征在于纤维素材料具有片状形态，粒径为5-200μm，厚度为0.01〜10μm，片状纤维素材料可阻挡 在UVA（320-400nm）和UVB（280-320nm）范围内的紫外线。 同时，本发明还提供了片状纤维素材料的制备方法及其用途。