文献类型：期刊文献

英文题名：Properties of rosin-based waterborne polyurethanes/cellulose nanocrystals composites

作者：Liu, He[1] Cui, Shuqin[1] Shang, Shibin[1,2] Wang, Dan[1,2] Song, Jie[3]

第一作者：刘鹤

通信作者：Shang, SB[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Key Lab Biomass Energy & Mat,SFA, Natl Engn Lab Biomass Chem Utilizat,Key & Lab For, Nanjing 210042, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Inst New Technol Forestry, Beijing 100091, Peoples R China;[3]Univ Michigan, Dept Chem & Biochem, Flint, MI 48502 USA

年份：2013

卷号：96

期号：2

起止页码：510-515

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20134016804784);Scopus(收录号：2-s2.0-84878004523);WOS:【SCI-EXPANDED(收录号:WOS:000321163200020)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 31070519).

语种：英文

外文关键词：Cellulose nanocrystals; Rosin; Waterborne polyurethanes; Nanoconiposite

摘要：Polymers from renewable biomass are viable supplements for synthetic polymers. In this study, cellulose nanocrystals (CNs) were used as nanofillers to improve properties of rosin-based waterborne polyurethanes (RWPU). The morphology, structure, thermal, and mechanical properties of the RWPU/CNs nanocomposites were investigated. It demonstrated that CNs were compatible with RWPU and dispersed homogeneously in the polymer matrix. CNs as nanofillers improved tensile strength of RWPU significantly. Tensile strength of RWPU/CNs composite films increased from 28.2 to 52.3 MPa with increasing CNs amount from 0 to 20 wt%. Moreover, the thermal stability of RWPU was also improved by CNs and the glass transition temperature of RWPU/CNs decreased comparing with RWPU. This work provided a novel pathway for preparation of biomass-based WPU with excellent properties from cellulose and rosin. (C) 2013 Elsevier Ltd. All rights reserved.