文献类型：期刊文献

英文题名：Modification of wood cell wall with water-soluble vinyl monomer to improve dimensional stability and its mechanism

作者：Huang, Yaoge[1,2] Li, Gaiyun[1,3] Chu, Fuxiang[3]

第一作者：Huang, Yaoge

通信作者：Li, GY[1];Li, GY[2];Chu, FX[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry New Technol, Xiangshan Rd, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Natl Forestry & Grassland Adm, Key Lab Wood Sci & Technol, Dongxiaofu Xiangshan Rd, Beijing 100091, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Hunan Collaborat Innovat Ctr Effect Utilizing Woo, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2019

卷号：53

期号：5

起止页码：1051-1060

外文期刊名：WOOD SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20193007235893);Scopus(收录号：2-s2.0-85069656894);WOS:【SCI-EXPANDED(收录号:WOS:000488949600005)】；

基金：The authors are very grateful for financial support from the National Key Research and Development Program of China (2017YFD0600203).

语种：英文

外文关键词：Acrylic monomers - Amides - Cells - Cytology - Dimensional stability - Energy dispersive X ray analysis - Grafting (chemical) - Scanning electron microscopy - Water treatment

摘要：In this work, a new simple and environmentally friendly wood modification method was used to improve the dimensional stability of fast-growing wood. The wood samples were submerged in a neutral aqueous solution of 40% N-isopropylacrylamide/2-hydroxyethyl methacrylate (NIPAM/HEMA) at a mass ratio of 1/6 in the presence of catalytic amounts of 2,2 '-azobis[2-methylpropionamidine] dihydrochloride (AAPH). The impregnated samples were heated at 60 degrees C for 12 h, followed by a heating period at 103 +/- 2 degrees C for 12 h, in the course of which an in situ graft polymerization occurred in the cell wall. The results of scanning electron microscopy and energy-dispersive X-ray analyses indicate that the water-soluble vinyl monomers could effectively permeate into the wood cell walls. Infrared spectra showed that water-soluble monomers were in situ polymerized in wood. The results of XPS indicate that the water-soluble vinyl monomers could graft onto wood cell walls. The dimensional stability of poplar wood modified by the water-soluble vinyl monomers treatment was remarkably improved compared with that of untreated poplar wood.