文献类型：期刊文献

英文题名：Effect of monomer type on polydopamine modification of bamboo flour and the resulting interfacial properties of bamboo plastic composites

作者：Song, Wei[1,2,3] Zhang, Shuangbao[1] Fei, Benhua[2] Zhao, Rongjun[3]

第一作者：Song, Wei

通信作者：Song, W[1];Zhang, SB[1];Song, W[2];Fei, BH[2];Song, W[3];Zhao, RJ[3]

机构：[1]Beijing Forestry Univ, Beijing Key Lab Wood Sci & Engn, MOE Key Lab Wooden Mat Sci & Applicat, Beijing 100083, Peoples R China;[2]Int Ctr Bamboo & Rattan, Key Lab Natl Forestry & Grassland Adm, Beijing Bamboo & Rattan Sci & Technol, Beijing 100102, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2021

卷号：171

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20213110722169);Scopus(收录号：2-s2.0-85111639640);WOS:【SCI-EXPANDED(收录号:WOS:000696988400005)】；

基金：This work was supported by the Beijing Natural Science Foundation (6202024) and the Science & Technology Research and Development Program of Guizhou Forestry Administration for Rural Industrial Revolution and Characteristic Forestry Industry (GZMC-ZD20202112) .

语种：英文

外文关键词：Natural fibre composites; Surface treatments; Interface; Mechanical properties; Thermal properties

摘要：Bamboo flour (BF) was modified with mussel-inspired polydopamine to enhance compatibility with high-density polyethylene (HDPE) in BF/HDPE composites. Polydopamine was synthesized using dopamine, catechol, and dopa as monomers. The modified BF exhibited better physicochemical properties. Dopamine-modified BF surface showed the greatest elevation in free energy and roughness. The largest increase in wettability, specific surface area, and thermal degradation temperature was displayed by dopa-modified BF. The improved processability of modified BF boosted interaction between BF and HDPE, thus physicomechanical performance of compressionmolded composites was promoted. Composites with dopamine-modified BF won the strongest interfaical bonding, the lowest water sorption, the best mechanical performance, and the highest heat distortion temperature. The highest glass transition temperature and melting temperature were found in composites with catecholmodified BF. Composites with dopa-modified BF triggered the biggest thermal degradation activation energy. Overall, dopamine modification gave composites more merits, but catechol and dopa were useful when tailoring some thermal properties.