文献类型：期刊文献

英文题名：Synthesis of a novel waterborne diethanolamine-modified lignin/polyurethane emulsion and its application as an adhesive for polypropylene decorative film on wood-based panels

作者：Chang, Liang[1] Wang, Yuanwu[1] Luo, Shupin[1] Gao, Li[1] Tang, Qiheng[1] Chen, Yongping[1] Ren, Yiping[1]

第一作者：常亮

通信作者：Chang, L[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：0

外文期刊名：POLYMER ENGINEERING AND SCIENCE

收录：;EI(收录号：20231513875826);Scopus(收录号：2-s2.0-85152080386);WOS:【SCI-EXPANDED(收录号:WOS:000961790400001)】；

基金：ACKNOWLEDGEMENTS This work was supported by the Special Fund of the Chinese Central Government for Basic Scientific Research Operations in Commonweal Research Institutes (NO. CAFYBB2021ZB004) and Scientific and Technological Achievements Promotion Project of Forestry and Grassland (NO. 2020133147). The authors would like to thank all the reviewers who participated in the review, as well as MJEditor () for providing English editing services during the preparation of this manuscript.

语种：英文

外文关键词：diethanolamine modification; plywood; polypropylene decorative film; sodium lignosulfonate; surface bonding strength; waterborne polyurethane

摘要：To improve the surface bonding strength of polypropylene (PP), decorative films on wood panels, sodium lignosulfonate (SL) was modified with diethanolamine (DEA) to graft two long hydrocarbon chains with end hydroxyl groups on the molecule. The product reacted with waterborne polyurethane (WPU) monomers to form reinforced emulsions. The novel emulsion was used as adhesives on the back of PP decorative films and compared to the unmodified SL. Different contents (5 wt.% and 10 wt.%) of modified SL content were considered in the dry WPU. The PP decorative films were hot-pressed onto plywood using different kinds of WPU. Results showed that two long hydroxyl groups were grafted on the SL molecule after DEA modification, which reacted with the WPU monomers to form reinforced WPU emulsions. The DEA-modified SL showed better dispersibility compared to pure SL, avoiding aggregation. Owing to their heat resistance and high stiffness, the DEA-modified SL/WPU emulsions were superior in thermal properties and surface bonding strength.