摘要
利用乳液聚合法合成三元聚合物AM/AMPSNa/α-MSt,该聚合物具有良好的稳定性、水溶性与耐温抗盐性能。通过利用光纤式动态光散射技术研究发现,样品的流体力学半径随聚合物浓度增大呈先增大后减小再增大的变化规律,并在低浓度时出现最大值,这表明在低聚合物浓度下分子间缔合作用增强;温度升高破坏了疏水基团周围的水分子结构,使得缔合作用大大削弱,进而导致样品流体力学半径随温度呈增大的变化规律。最后通过不同浓度的Mg离子和Ca离子的添加实验发现,该聚合物具有一定的抗离子能力,但Mg离子比Ca离子更容易使分子间缔合作用增强。
A ternary polymer of AM/AMPSNa/α-MSt was synthesized by the emulsion polymerization method.This multi-polymer had excellent stability,water solubility and be of better tolerance to temperature and salt.The research results of optical-fiber dynamic light scattering experiment showed that the hydrodynamic radius increased firstly then decreased and increased finally as the concentration of sample increasing and appeared a maximum value at extremely low polymer concentration.This revealed the intermolecular association reaction was enhanced at the condition of extremely low polymer concentration.The water structure abound the hydrophobic group by increasing the temperature and then the intermolecular association reaction is weakened greatly,which leads to the hydrodynamic radius decreasing.The experimental results of adding different concentration of Mg2＋ and Ca2＋ revealed that the ternary polymer of AM/AMPSNa/α-MSt had a certain anti-ionic ability.However,the ability of enhancing the association reaction by adding Mg2＋was better than that of adding Ca2＋.
出处
《应用化工》
CAS
CSCD
2011年第7期1138-1141,共4页
Applied Chemical Industry
基金
陕西省自然科学基础研究计划基金(2010JM5011)
陕西省教育厅专项科研计划项目资助课题(11JK0553)
关键词
多元聚合物
聚集
缔合作用
流体力学半径
动态光散射
multi-polymer
aggregation
association reaction
hydrodynamic radius
dynamic light scattering
