林产化学与工业
林產化學與工業
림산화학여공업
CHEMISTRY AND INDUSTRY OF FOREST PRODUCTS
2010年
1期
59-62
,共4页
Fe~(2+)-H_2O_2-二氧化硫脲%TMP%甲基丙烯酸甲酯%接枝共聚
Fe~(2+)-H_2O_2-二氧化硫脲%TMP%甲基丙烯痠甲酯%接枝共聚
Fe~(2+)-H_2O_2-이양화류뇨%TMP%갑기병희산갑지%접지공취
Fe~(2+)-H_2O_2-thioureadioxide%TMP%methyl methacrylate%graft copolymerization
研究了Fe~(2+)-H_2O_2-二氧化硫脲(TD)引发体系下热磨机械浆(TMP)浆料与甲基丙烯酸甲酯(MMA)的接枝共聚工艺.分析了在该引发体系下各反应条件对接枝率、接枝效率和单体转化率的影响.结果表明,TD的加入能有效地使接枝共聚得以顺利进行;适当提高温度,增加单体浓度,控制合适的TD用量都能提高接枝率和接枝效率,并能在较短的时间成功接枝;接枝率一般维持在80%以上,适宜条件下能达到91%.
研究瞭Fe~(2+)-H_2O_2-二氧化硫脲(TD)引髮體繫下熱磨機械漿(TMP)漿料與甲基丙烯痠甲酯(MMA)的接枝共聚工藝.分析瞭在該引髮體繫下各反應條件對接枝率、接枝效率和單體轉化率的影響.結果錶明,TD的加入能有效地使接枝共聚得以順利進行;適噹提高溫度,增加單體濃度,控製閤適的TD用量都能提高接枝率和接枝效率,併能在較短的時間成功接枝;接枝率一般維持在80%以上,適宜條件下能達到91%.
연구료Fe~(2+)-H_2O_2-이양화류뇨(TD)인발체계하열마궤계장(TMP)장료여갑기병희산갑지(MMA)적접지공취공예.분석료재해인발체계하각반응조건대접지솔、접지효솔화단체전화솔적영향.결과표명,TD적가입능유효지사접지공취득이순리진행;괄당제고온도,증가단체농도,공제합괄적TD용량도능제고접지솔화접지효솔,병능재교단적시간성공접지;접지솔일반유지재80%이상,괄의조건하능체도91%.
Graft copolymerization of thermomechanical pulp(TMP) with methyl methacrylate (MMA) using Fe~(2+)-H_2O_2 -thiourea-dioxide(TD) initiating system was studied. The effects of reaction factors on grafting rate, grafting efficiency and monomer conversion ratio were identified. Results showed that the addition of thioureadioxide can proceed the graft copolymerization successfully. Proper increases of temperature, monomer concentration, and maintaining proper thioureadioxide dosage were beneficial to the grafting rate, grafting efficiency and conversion ratio. Graft copolymerization in this system can be completed successfully and grafting efficiency was generally maintained at over 80 %, and even up to 91 % under proper reaction conditions.
