Durability of Wood-Polymer Composite Prepared by In-situ Polymerization of Functional Monomers
Fast-growing plant wood,Micheliamacclurel wood,was modified by formation of wood-polymer composite to improve its decay resistance.Two functional monomers,glycidyl methacrylate and ethylene glycol dimethacrylate,added with a few Azo-bis-isobutryonitrile as initiator,and maleic anhydride as catalyst,were first impregnated into wood cell lumen under a vacuum-pressure condition,and then in-situ polymerized into copolymers through a catalyst-thermal treatment.The decay resistances of untreated wood and wood-polymer composites were assessed by weight loss and compared by SEM observations.SEM and FTIR analysis indicated that the in-situ polymerized copolymers fully filled up wood cell lumen and also grafted onto wood cell walls,resulting in the blockage of passages for microorganisms and moisture to wood cell walls.Thus,the decay resistance of the wood-polymer composite against brown rot fungus and white rot fungus in terms of weight loss achieved 1.04%~1.33%,improved 95.10%~95.35% than those of untreated Micheliamacclurel wood; and also higher than that of boron-treated wood.The SEM observations presented the remarkable improvement of decay resistance of wood after such treatment,which effectively protected wood from degradation by fungi.
Wood-polymer composite Decay Resistance Functional Monomer Micheliamacclurel Wood
Dingwang Gong Zhenbo Liu Huawei Huang Changqing Zhang Chen Liang
Key Laboratory of Bio-based Material Science and Technology of Ministry of Education,Northeast Forestry University,Harbin 150040,P.R.China
国际会议
沈阳
英文
69-72
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）