文献类型：期刊文献

中文题名：nan

英文题名：Effect of Impregnation with Maltodextrin and 1,3-Dimethylol-4,5-Dihydroxyethyleneurea on Poplar Wood

作者：Cai, Mingzhen[1] Fu, Zongying[2] Cai, Yingchun[1] Li, Zhengdong[1] Xu, Can[1] Xu, Cong[1] Li, Shuai[1]

第一作者：Cai, Mingzhen

通信作者：Cai, YC[1]

机构：[1]Northeast Forestry Univ, Coll Mat Sci & Engn, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Heilongjiang, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol State Forestry Adm, Beijing 100091, Peoples R China

年份：2018

卷号：9

期号：11

外文期刊名：FORESTS

收录：;EI(收录号：20184406027527);Scopus(收录号：2-s2.0-85055748871);WOS:【SCI-EXPANDED(收录号:WOS:000451310300016)】；

基金：This research was funded by the National Natural Science Foundation of China (Grant No. 31670562).

语种：英文

外文关键词：maltodextrin; 1; 3-dimethylol-4; 5-dihydroxyethyleneurea; wood impregnation modification; poplar; wood properties

摘要：Modification of poplar (Populus adenopoda Maxim) wood by using maltodextrin (MA) combined with 1,3-dimethylol-4,5-dihydroxyethyleneurea (DM) resin was investigated in this study. The weight percent gain, dimensional stability, mechanical strength, and microscopic chemical change were determined before and after impregnation. Results indicated that the composite modifier was impregnated into the wood cell lumen, as verified by scanning electron microscopy and a change in weight percent gain. Anti-swelling efficiency was significantly improved compared with the untreated sample; however, the sample treated with MA obtained an anti-swelling efficiency that was slightly lower than that of the sample treated with sucrose. The flexural strength, flexural modulus, and compressive strength perpendicular to the grain increased with an increase in MA concentration, but the compressive modulus and impact strength were reduced. Fourier-transform infrared spectroscopy demonstrated that MA delayed the cross-linking of the DM resin cell wall, and X-ray diffraction analysis showed that the crystallinity of the cellulose crystalline region was reduced to a certain extent. In general, the poplar wood treated with combined MA and DM resin exhibited enhanced properties relative to those of the poplar wood treated with sucrose.