石化技术
石化技術
석화기술
PETROCHEMICAL INDUSTRY TECHNOLOGY
2015年
2期
87-89
,共3页
光诱导%原子转移自由基聚合%沉淀聚合%甲基丙烯酸甲酯%聚合条件
光誘導%原子轉移自由基聚閤%沉澱聚閤%甲基丙烯痠甲酯%聚閤條件
광유도%원자전이자유기취합%침정취합%갑기병희산갑지%취합조건
light-induced%atom transfer radical polymerization%precipitation polymerization%methyl methacrylate%polymerization conditions
本文以2-羟基-2-甲基-1-苯基-1-丙酮(1173)为光引发剂,FeCl3·6H2O作为催化剂,六次甲基四胺作为配体,维生素C作为还原剂,在无水乙醇溶剂中进行聚合反应。通过光诱导原子转移自由基沉淀聚合法合成了聚甲基丙烯酸甲酯。研究了反应时间、光引发剂用量、还原剂用量、配体用量、催化剂用量等因素对聚合反应收率的影响。聚合物的红外谱图证实得到目标产物聚甲基丙烯酸甲酯。热分析结果表明该种方法得到的聚甲基丙烯酸甲酯金属残留量较低。并通过改变实验参数得到了甲基丙烯酸甲酯均聚的最佳反应条件:反应时间12 h,引发剂1173与单体总量的摩尔比为1:25,还原剂维生素C与单体总量的摩尔比为3:4,催化剂FeCl3·6H2O与单体总量的摩尔比为3:250,配体六次甲基四胺与单体总量的摩尔比为3:100。
本文以2-羥基-2-甲基-1-苯基-1-丙酮(1173)為光引髮劑,FeCl3·6H2O作為催化劑,六次甲基四胺作為配體,維生素C作為還原劑,在無水乙醇溶劑中進行聚閤反應。通過光誘導原子轉移自由基沉澱聚閤法閤成瞭聚甲基丙烯痠甲酯。研究瞭反應時間、光引髮劑用量、還原劑用量、配體用量、催化劑用量等因素對聚閤反應收率的影響。聚閤物的紅外譜圖證實得到目標產物聚甲基丙烯痠甲酯。熱分析結果錶明該種方法得到的聚甲基丙烯痠甲酯金屬殘留量較低。併通過改變實驗參數得到瞭甲基丙烯痠甲酯均聚的最佳反應條件:反應時間12 h,引髮劑1173與單體總量的摩爾比為1:25,還原劑維生素C與單體總量的摩爾比為3:4,催化劑FeCl3·6H2O與單體總量的摩爾比為3:250,配體六次甲基四胺與單體總量的摩爾比為3:100。
본문이2-간기-2-갑기-1-분기-1-병동(1173)위광인발제,FeCl3·6H2O작위최화제,륙차갑기사알작위배체,유생소C작위환원제,재무수을순용제중진행취합반응。통과광유도원자전이자유기침정취합법합성료취갑기병희산갑지。연구료반응시간、광인발제용량、환원제용량、배체용량、최화제용량등인소대취합반응수솔적영향。취합물적홍외보도증실득도목표산물취갑기병희산갑지。열분석결과표명해충방법득도적취갑기병희산갑지금속잔류량교저。병통과개변실험삼수득도료갑기병희산갑지균취적최가반응조건:반응시간12 h,인발제1173여단체총량적마이비위1:25,환원제유생소C여단체총량적마이비위3:4,최화제FeCl3·6H2O여단체총량적마이비위3:250,배체륙차갑기사알여단체총량적마이비위3:100。
In this paper, 1173 as the initiator, FeCl3·6H2O as a catalyst , hexamethylenetetramine as a ligand, vitamin C as a reducing agent, the polymerization reaction was carried out in ethanol solvent. Poly(methyl methacrylate)s were prepared via atom transfer radical polymerization precipitation polymerization. The effects of reaction temperature, the amount of initiator, reducing, ligand, catalyst on the polymerization have been investigated. The Poly(methyl methacrylate)s were characterized by FT-IR and differential thermal analysis of polymers. The optimal reaction conditions of synthesis of Poly(methyl methacrylate) were obtained by changing the experimental factor: the reaction time was 12 h, 1173 was 4.0% of the total monomers (molar ratio) , Vitamin C was 7.5% of the total monomers (molar ratio), catalyst was 1.2% of the total amount of the monomers (molar ratio), hexamethylenetetramine ligand was 3.0% of the total monomers (molar ratio) .