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| 高固含量丙烯酸酯共聚物乳液的单体组成与流变行为 | |
| 引用本文： | 刘建平,孙彦琳,王红,刘浪,赵星.高固含量丙烯酸酯共聚物乳液的单体组成与流变行为[J].高分子材料科学与工程,2008,24(7). |
| 作者姓名： | 刘建平 孙彦琳 王红 刘浪 赵星 |
| 作者单位： | 1. 昆明理工大学材料与冶金工程学院 2. 昆明理工大学理学院 3. 云南省新材料制备与加工重点实验室,云南,昆明,650093 |
| 基金项目： | 教育部科学技术研究重点项目 , 云南省自然科学基金项目 , 云南省教育厅科学基金项目 |
| 摘 要： | 合成了一系列固体含量为70%的丙烯酸丁酯/甲基丙烯酸甲酯/α-甲基丙烯酸(BA/MMA/MAA)共聚物乳液,研究了软(BA)、硬(MMA)段单体用量比对乳液体系流变行为的影响,并对其乳胶粒的粒径分布和微观形态进行了表征。结果表明,所合成乳液乳胶粒的粒径在50nm~650nm范围内,呈宽分散分布状态。当BA/MMA<60/40时,乳液可保持低黏度;而当BA/MMA>60/40时,乳液的黏度急剧增加。随着乳液中软、硬段单体比的不同,乳液的乳胶粒分布状态和凝聚形态均有显著变化。 |
| 关 键 词： | 高固含量 单体组成 丙烯酸酯乳液 流变性质 |
Monomer Ratio and Rheological Behavior of High Solid Content Acrylate Copolymer Emulsions |
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| LIU Jian-ping,SUN Yan-lin,WANG Hong,LIU Lang,ZHAO Xing.Monomer Ratio and Rheological Behavior of High Solid Content Acrylate Copolymer Emulsions[J].Polymer Materials Science & Engineering,2008,24(7). | |
| Authors: | LIU Jian-ping SUN Yan-lin WANG Hong LIU Lang ZHAO Xing |
| Affiliation: | LIU Jian-ping1,SUN Yan-lin2,WANG Hong2,LIU Lang3,ZHAO Xing2 |
| Abstract: | High solid content butyl acrylate/methyl methacrylate/methacrylic acid(BA/MMA/ MAA) copolymer emulsions were synthesized using semi-continuous emulsion polymerization.The effects of the monomer ratio(BA/MMA) on the rheological behavior of emulsion were studied.The particle size distribution(PSD) and the micro-morphology of the latex particles were also investigated.The results show that the particle size of latex particles is within 50nm~ 650nm and PSD is multimodal.When BA/MMA is less than 60/40,the emulsions can be maintained at low viscosity.But when it is more than 60/40,the viscosity increases sharply.Under unchanged conditions in the synthesis,notable differences in PSD shapes and aggregation patterns of emulsions can be observed when using different monomer ratio. |
| Keywords: | high solid content monomer ratio acrylate emulsion rheological property |
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