【作者】 刘海燕；

【导师】 丁伟；

【作者基本信息】 大庆石油学院 ， 化学工艺， 2008， 硕士

【摘要】 本论文采用1-丁基-3-甲基咪唑氟硼酸盐([bmim]BF4)离子液体作为聚合反应的反应介质,以丙烯酰胺(AM)、2-甲基-2-丙烯酰胺基-丙磺酸(AMPS)为亲水单体,以苯乙烯(ST)、N-辛基丙烯酰胺(N-8AM)为疏水单体,通过自由基聚合合成疏水缔合丙烯酰胺二元、三元共聚物。具体研究内容如下:对典型的烷基咪唑类离子液体的合成工艺进行研究和改进,在未经改装的家用微波炉中合成系列卤化1,3-二烷基咪唑和1-烷基-3-甲基咪唑氟硼酸盐离子液体。通过实验得出微波功率、加热时间、加热方式、反应物的物料比是影响产物收率的主要因素。在1-丁基-3-甲基咪唑氟硼酸盐[bmim]BF4离子液体中,以AIBN为引发剂,合成AM/ST和AM/N-8AM二元共聚物。通过单因素实验考察各工艺参数对聚合的影响,确定了合成二元共聚的适宜工艺条件。对二元共聚物进行红外光谱和核磁共振氢谱、碳谱分析,证实所合成物质确为目标产物。在1-丁基-3-甲基咪唑氟硼酸盐[bmim]BF4离子液体中,以过氧化苯甲酰(BPO)与芳叔胺(DMA)组成的氧化还原引发体系为引发剂,合成兼具阴离子性与疏水缔合性丙烯酰胺三元共聚物AM/AMPS/ST和AM/AMPS/N-8AM。通过单因素实验和正交实验考察各工艺参数对合成的影响,得出各因素对共聚物特性黏数影响程度的大小顺序为:引发温度>总单体浓度>AMPS占总单体比例>疏水单体占总单体比例>引发剂占总单体浓度离子液体中合成的兼具阴离子性与疏水缔合性能的AM/AMPS/N-8AM与AM/AMPS/ST三元共聚物均有很好的耐温与抗剪切性能,三元共聚物AM/AMPS/N-8AM的性能优于AM/AMPS/ST。在45℃,AM/AMPS/N8-AM三元共聚物的浓度为1.2g/L时,聚合物水溶液的表观粘度高达220.1mPa·s;表观粘度随温度和剪切速率的增加下降较慢,当温度高达90℃时,表观粘度高达172.0mPa·s,粘度保持率在43.3%以上,当剪切速率达24.48s-1时,表观粘度高达212.3mPa·s,粘度保持率在43.5%以上。更多还原

【Abstract】 This paper described the process where we obtained the hydrophobic associating acrylamide-based dicopolymer and tercopolymer through radical polymerization with 1-butyl-3-methyl imidazolium tetrafluoroborate ionic liquids（[bmim]BF4） as the reaction medium of polymerization,acrylamide（AM） and 2-acrylamido-2-methylpropane sulfonic acid（AMPS） as hydrophilic monomer,styrene（St） and N-octylacrylamide（N-8AM） as hydrophobic monomer.The concrete research contests are as follow.Researching and improving technology of 1,3-diaalkyl imidazolium ionic liquids,the series of halide 1-alkyl-3-methyl imidazolium and 1-alkyl-3-methyl imidazolium tetrafluoroborate ionic liquids were synthesized in the unmodified microwave oven under the condition of free-organic-solvents.It was concluded that the reaction power,time,fashion and the ratio of reactant were the main factors effecting the yield of products through experiment.The AM/ST and AM/N-8AM dicopolymers were synthesized with azobisisobutyronitrile（AIBN） as iniator in [bmim]BF4 ionic liquids.Methods according to single-factor experiment,the best technological conditions of synsizing dicopolymer were decided.The structure of polymers was identified by 1H NMR,13C NMR and IR.We obtained the tercopolymer of acrylamide containing strong anion and hydrophobic associating with 1-butyl-3-methyl imidazolium tetrafluoroborate ionic liquids as the reaction medium of polymerization,with Benzoperoxide/N,N-dimethylaniline（BPO/DMA） redox system as initiator. Optimization of the processing technology by orthogonal design,It was obtained that the order of effecting intrinsic viscosity of polymerization is as follow:temperature>concentration of monomer>ratio of AMPS>ration of hydrophobic monomer>concentration of initiatorThe terpolymer AM/AMPS/N-8AM and AM/AMPS/ST solution synthesized in ionic liquids have better temperature tolerance and shearing resistance.AM/AMPS/N-8AM is superior to AM/AMPS/ST.When the mass concentration of solution is 1.2g/l,the apparent viscosity can reach 220.1mPa·s,when the temperature changes from 45℃to 90℃,the viscosity remaining rate is 43.3% and when the shear rate increase to 24.48s^-1,the viscosity remaining rate is 43.5%.更多还原