文献类型：期刊文献

英文题名：Unexpected role of amphiphilic lignosulfonate to improve the storage stability of urea formaldehyde resin and its application as adhesives

作者：Gao, Shishuai[1,2,3] Cheng, Zenghui[1,3] Zhou, Xi[1,3] Liu, Yupeng[1,3] Chen, Riqing[1,3] Wang, Jifu[1,3] Wang, Chunpeng[1,3] Chu, Fuxiang[1,3] Xu, Feng[2] Zhang, Daihui[1,3]

第一作者：Gao, Shishuai;高士帅

通信作者：Zhang, DH[1]

机构：[1]Chinese Acad Forestry, Key Lab Chem Engn Forest Prod, Inst Chem Ind Forest Prod,Natl Engn Lab Biomass C, Natl Forestry & Grassland Adm,Key Lab Biomass Ene, Nanjing 210042, Jiangsu, Peoples R China;[2]Beijing Forestry Univ, Coll Mat Sci & Technol, Beijing 100083, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Jiangsu, Peoples R China

年份：2020

卷号：161

起止页码：755-762

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;Scopus(收录号：2-s2.0-85086598713);WOS:【SCI-EXPANDED(收录号:WOS:000571203100016)】；

基金：We acknowledge the support from National Natural Science Foundation of China (31890774), Jiangsu Key Laboratory for Biomass Energy and Materials (JSBEM-S-201901), and National Key Research and Development Program of China (2017YFE0106800, 2017YFD0601003).

语种：英文

外文关键词：Lignosulfonate; Surfactant; Storage stability; Urea formaldehyde resin; Adhesive

摘要：As the second-largest natural polymer, the utilization of lignin for practical applications has attracted increasing attention. In this study, lignosulfonate was employed to enhance the storage stability of urea formaldehyde (UF) resins. Cryo-scanning electron microscopy was firstly used to observe the influence of lignosulfonate addition on the colloidal morphology of UF resin. Moreover, adding lignosulfonate at different stages during the UP resins synthesis was also investigated to reveal its effect on storage stability.The potential interaction between lignosulfonate and UF resins was then analyzed via FT-IR, C-13 CPMAS NMR, and zeta potential. It has been observed that lignosulfonate could increase the electrostatic repulsion of UF resins to avoid aging. No chemical reaction between UF resins and lignosulfonate was observed. After the elucidation of potential interaction, the effect of lignosulfonate on the curing process, thermal stability and adhesive performance of UF resins was systematically evaluated. Finally, as adhesives to fabricate eucalyptus plywood, the shear strength and formaldehyde release of UF resins with 20% addition of lignosulfonate could reach 0.88 MPa and 0.12 mg/L, respectively. Due to the excellent performance, low cost and wide availability of lignosulfonate, it might be industrially used as a stabilizer in the UF resins production. (C) 2020 Elsevier B.V. All rights reserved.