壳聚糖/丙烯酰胺微球的制备及性能研究  

Preparation and properties of chitosan/acrylamide microspheres

作　　者：宣雅妮 唐凡 吕伟 庄力齐 赵世成[1] XUAN Ya-ni;TANG Fan;LÜWei;ZHUANG Li-qi;ZHAO Shi-cheng(State Key Laboratory-Multiphase Materials Laboratory,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;Oil and Gas Technology Research Institute,Changqing Oilfield Company,Xi’an 710014,China)

机构地区：[1]华东理工大学化工学院联合国家重点实验室-多相结构材料实验室,上海200237 [2]长庆油田公司油气工艺研究院,陕西西安710014

出　　处：《应用化工》2022年第9期2527-2531,共5页Applied Chemical Industry

基　　金：国家自然科学基金(21878089)。

摘　　要：以7#白油为油相,丙烯酰胺(AM)和2-丙烯酰胺-2-甲基丙磺酸(AMPS)为聚合单体,壳聚糖(CS)为交联剂,采用反相微乳液法制备了壳聚糖/聚丙烯酰胺CS/P(AM-AMPS)微球,通过绘制三元相图,确定了反相微乳液体系组成:油相为60.0%,水相为25.0%,乳化剂为15.0%,CS和引发剂用量分别为0.2%和0.3%。应用扫描电镜、透射电镜和Zeta纳米粒度仪表征微球形貌结构,研究了CS/P(AM-AMPS)微球的耐剪切性能和热稳定性。结果表明,微球呈现较为均匀的球形,平均粒径为100 nm左右,在多次剪切作用下,P(AM-AMPS)微球黏度仅能保持初始黏度的50%,而CS/P(AM-AMPS)微球黏度可以达到初始黏度的80%,其耐剪切性能更强;同时CS/P(AM-AMPS)微球具有良好的热稳定性,耐温可达200℃以上。Chitosan/polyacrylamide CS/P(AM-AMPS)microspheres were prepared by reversed-phase microemulsion method using 7#mineral oil as oil phase,acrylamide(AM)and 2-acrylamido-2-methylpropane sulfonic acid(AMPS)as polymeric monomer and chitosan(CS)as crosslinking agent.Firstly,the composition of inverse microemulsion system was determined by drawing ternary phase diagram:oil phase was 60.0%,water phase is 25.0%,emulsifier was 15.0%.CS and initiator dosage were determined to be 0.2%and 0.3%.SEM,TEM and Zeta nano-size instrument were used to characterize the morphology and structure of the microspheres,the shear resistance and thermal stability of CS/P(AM-AMPS)microspheres were studied.The results showed that the microspheres were uniformly spherical with an average particle size of about 100 nm.The viscosity of P(AM-AMPS)microspheres can only maintain 50%of the initial viscosity,while the viscosity of CS/P(AM-AMPS)microspheres can reach 80%of the initial viscosity,the shear resistance of CS/P(AM-AMPS)microspheres is better.At the same time,CS/P(AM-AMPS)microspheres have good thermal stability,and the temperature can reach more than 200℃.

关 键 词：壳聚糖 堵水调剖 流变学 聚丙烯酰胺 

分 类 号：TQ316[化学工程—高聚物工业]