高稳定性双水相共聚物PAM-AMPS的合成与表征

Synthesis and Characterization of Aqueous Two-Phase Polymerization of PAM-AMPS with High Stability

摘要:

采用双水相聚合技术，以硫酸铵水溶液为反应介质，过硫酸铵和亚硫酸钠氧化还原体系为引发剂，丙烯酰胺（AM）和2-丙烯酰胺基-2甲基丙磺酸（AMPS）为反应单体，聚2-丙烯酰胺基-2-甲基-1-丙磺酸钠（PAMPS）为分散剂，制备了稳定的阴离子聚丙烯酰胺(PAM-AMPS)乳液。采用傅立叶红外光谱仪（FTIR）、X射线衍射（XRD）、热重分析（TG）及差热扫描（DSC）对合成的共聚物结构进行了表征，并对其乳液进行了透射电镜与稳定性分析。结果表明，共聚物PAM-AMPS为无定形态的非结晶分子，且热稳定性好。PAM-AMPS乳液稳定性能优良，动力学不稳定指数（TSI）?0.4，且其为100-400nm的球形或椭球形颗粒。

Abstract:

A stable anionic polyacrylamide(PAM-AMPS) emulsion was prepared by using acrylamide (AM) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) as the reaction monomer,Ammonium Sulphate(AS) aqueous as the dispersed medium of the aqueous two-phase polymerization, Ammonium persulfate and sodium bisulfite redox system as initiators,the Poly 2- acrylamide -2- methyl -1- sodium sulfonate as a steric stabilizer. The structure of PAM-AMPS was confirmed by means of XRD,FTIR,TG and DSC. The PAM-AMPS emulsion was analyzed by TEM and stability analysis.The results show that the copolymer P (AM-AMPS) is an amorphous amorphous molecule with good thermal stability. The stability of PAM-AMPS emulsion was excellent and the PAM-AMPS emulsion destabilisation coefficient(TSI) was less than or equal to 0.4. The copolymer PAM-AMPS is distributed in spherical and elliptical particles in aqueous solution.