应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2010年
2期
213-216,225
,共5页
陈孝行%陈少平%林超强%伍仁强
陳孝行%陳少平%林超彊%伍仁彊
진효행%진소평%림초강%오인강
丙烯酰胺-苯乙烯-二甲基二烯丙基氯化铵%高固含量乳液%共聚物%胶体滴定%动力粘度
丙烯酰胺-苯乙烯-二甲基二烯丙基氯化銨%高固含量乳液%共聚物%膠體滴定%動力粘度
병희선알-분을희-이갑기이희병기록화안%고고함량유액%공취물%효체적정%동력점도
acrylamide-styrene-diallyldimethylammonium chloride%high solid content soap free emulsion%copolymer%colloid titration%dynamic viscosity
以丙烯酰胺(AM)、苯乙烯(ST)、二甲基二烯丙基氯化铵(DADMAC)为原料,通过无皂乳液聚合法合成了高固含量的AM-ST-DADMAC三元共聚物.研究了单体总质量分数和三种单体质量配比对转化率和AM-ST-DADMAC共聚物无皂乳液动力粘度的影响.结果表明,DADMAC的配比是影响AM-ST-DADMAC共聚物乳液固含量的主要因素.较佳的工艺条件为m(AM) : m(ST) : m(DADMAC)=5 : 2 : 3,单体总质量分数为63%,引发剂用量为单体总质量的0.5%,反应温度75 ℃,反应时间2 h.在该反应条件下,目标聚合物的产率可达89.9%,DADMAC的转化率为71.5%,乳胶粒表面电荷量是1.405 mmol/g,乳液的动力粘度是76 mPa·s.
以丙烯酰胺(AM)、苯乙烯(ST)、二甲基二烯丙基氯化銨(DADMAC)為原料,通過無皂乳液聚閤法閤成瞭高固含量的AM-ST-DADMAC三元共聚物.研究瞭單體總質量分數和三種單體質量配比對轉化率和AM-ST-DADMAC共聚物無皂乳液動力粘度的影響.結果錶明,DADMAC的配比是影響AM-ST-DADMAC共聚物乳液固含量的主要因素.較佳的工藝條件為m(AM) : m(ST) : m(DADMAC)=5 : 2 : 3,單體總質量分數為63%,引髮劑用量為單體總質量的0.5%,反應溫度75 ℃,反應時間2 h.在該反應條件下,目標聚閤物的產率可達89.9%,DADMAC的轉化率為71.5%,乳膠粒錶麵電荷量是1.405 mmol/g,乳液的動力粘度是76 mPa·s.
이병희선알(AM)、분을희(ST)、이갑기이희병기록화안(DADMAC)위원료,통과무조유액취합법합성료고고함량적AM-ST-DADMAC삼원공취물.연구료단체총질량분수화삼충단체질량배비대전화솔화AM-ST-DADMAC공취물무조유액동력점도적영향.결과표명,DADMAC적배비시영향AM-ST-DADMAC공취물유액고함량적주요인소.교가적공예조건위m(AM) : m(ST) : m(DADMAC)=5 : 2 : 3,단체총질량분수위63%,인발제용량위단체총질량적0.5%,반응온도75 ℃,반응시간2 h.재해반응조건하,목표취합물적산솔가체89.9%,DADMAC적전화솔위71.5%,유효립표면전하량시1.405 mmol/g,유액적동력점도시76 mPa·s.
The terpolymer AM-ST-DADMAC was synthesized by soap-free emulsion copolymerization with acrylamide(AM),styrene(ST) and diallyldimethylammonium chloride(DADMAC).The effect of the total mass fraction of monomer and three kinds of monomer ratio on the conversion rate and the dynamic viscosity of the soap-free emulsion of terpolymer AM-ST-DADMAC were discussed.The experimental results indicate that the mass ratio of DADMAC is the main factor of the influence on the solid content of the terpolymer emulsion. Better condition for the polymerization is m(AM) : m(ST) : m(DADMAC)=5 : 2 : 3,the total mass fraction of monomer is 63%,dosage of initiator is 0.5% to the total mass of monomer,the reaction temperature is 75 ℃ and the reaction time is 2 h.Under the above reaction conditions,the yield of the target copolymer is up to 89.9%,the conversion of DADMAC is 71.5%,the surface charge (amount) of latex particle is 1.405 mmol/g,the dynamic viscosity of emulsion is 76 mPa·s.
