摘要
采用Fe2+-H2O2-二氧化硫脲(TD)氧化还原体系引发甲基丙烯酸缩水甘油酯(GMA)与桉树漂白木浆接枝共聚,并通过交联制得吸油功能材料——GMA接枝纤维。研究了各因素对接枝纤维接枝率及吸油率的影响。红外图谱证明GMA已成功接枝到纤维素上。结果表明:当反应温度55℃,单体浓度0.14 mol/L,H2O2质量浓度0.20 g/L,TD质量浓度1.00 g/L,交联剂邻苯二甲酸二烯丙酯树脂(DAP)用量5.0%,反应液比控制在50∶1(mL∶g),接枝纤维对0#柴油的吸油率可达17.6 g/g;在很大范围,接枝纤维吸油率随着接枝率的提高而增加;接触角和环氧基含量随着纤维接枝率的提高而增大。纤维表面极性是影响其吸油率的主要因素。
Cellulose-g-glycidyl methacrylate（GMA） was obtained from graft copolymerization of bleached eucalyptus pulp with GMA induced by Fe2＋-H2O2-thioureadioxide（TD） redox system via the crosslinking reaction.Influences of each factor on grafting percentage and oil adsorption rate of the cellulose-g-GMA were investigated as well.The FT-IR spectra of cellulose-g-GMA indicated that GMA monomer had been successfully grafted onto the cellulose backbone.The results showed that the oil adsorption rate of cellulose-g-GMA toward 0# diesel can achieve 17.6 g/g when reaction temperature was 55℃,monomer dosage was 0.14 mol/L,H2O2 dosage was 0.20 g/L,TD dosage was 1.00 g/L,DAP dosage was 5.0 %,liquor ratio was 50∶1（mL∶g） respectively.Generally the oil adsorption rate increased with the increasing grafting percentage,and the contact angle,as well as the epoxy group content of cellulose-g-GMA were augmented with the increasing of grafting percentage.The fiber surface polarity of cellulose-g-GMA is the main factor which influences the oil adsorption rate.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2011年第5期32-36,共5页
Chemistry and Industry of Forest Products
基金
国家自然科学基金资助项目(31070524)
江苏省科技创新专项资金资助项目(BZ2010069)
