石蜡/丙烯酸核壳聚合乳液特性粘数的研究  

Study on Intrinsic Viscosity of Paraffin-Acrylic Acid Core-Shell Copolymer Emulsion

作　　者：周梅村[1] 杨波[1] 易争明[1] 曹铭[1] 杨超[1] 马丽杰[1] 

机构地区：[1]昆明理工大学生物与化学工程学院,云南昆明650224

出　　处：《石油化工》2005年第4期347-350,共4页Petrochemical Technology

基　　金：云南省教育厅科学研究基金资助项目(200111049);云南省高校联合测试基金资助项目。

摘　　要：采用半连续单体乳液滴加法聚合法,以石蜡(PF)为种子、丙烯酸(AA)为壳,制备石蜡/丙烯酸(PFAA)核壳聚合乳液。以乳液特性粘数([η])为评价指标,利用正交实验L9(34)筛选最佳工艺条件。考察了反应温度θ、反应时间t、引发剂K2S2O8用量和单体AA用量对PFAA乳液[η]的影响。结果表明,影响乳液[η]因素的大小顺序为θ>t>w(K2S2O8)>w(AA),较优的工艺条件:θ=70～75℃,t=2h,w(K2S2O8)=0.16%～0.20%,w(AA)=16.5%～18.0%。Paraffin-acrylic acid (PFAA) core-shell copolymer emulsion was synthesized with paraffin (PF) as core and acrylic acid (AA) as shell by seed emulsion polymerization. With intrinsic viscosity ([η]) of emulsion as assessment index, optimum synthesizing conditions for PFAA emulsion were studied by orthogonal experimental design. Effects of reaction temperature, reaction time, amount of initiator and addition amount of monomer on [η] of PFAA emulsion were investigated. Factors affecting [η] of emulsion were in order of reaction temperature (θ) > reaction time (t) > mass fraction of K2S2O8 (w(K2S2O8)) > mass fraction of AA (w(AA)). Optimum reaction conditions were: θ, 70-75°C t, 2 h, w(K2S2O8) =0.16%-0.20%, and w(AA) = 16.5%-18.0%.

关 键 词：石蜡 丙烯酸 核壳接枝 乳液聚合 特性粘数 

分 类 号：TQ316.334[化学工程—高聚物工业]