摘要
用2-丙烯酰胺基-2-甲基丙磺酸(AMPS)作为功能单体与甲基丙烯酸甲酯(MMA)进行无皂乳液共聚合,得到了小微球集合型P(AMPS-MMA)微球。用红外光谱(FT-IR)、热性能分析(TG-DSC)和扫描电镜(SEM)等技术对样品进行表征,并采用表面张力法测得AMPS的临界胶束浓度(CMC)为0.072mol/L;通过探讨AMPS用量对反应体系的影响研究了聚合反应机理。结果表明,微球的Tg为170℃左右,平均粒径大约在20μm,呈单分散性,每个微球都由很小的微球集合而成,小微球的粒径大约在0.1μm。
The P（AMPS-MMA） fine particles clustered microspheres were synthesized via emulsifier-free emulsion polymerization with methyl methacrylate（MMA） and a functional monomer of 2-acrylamido-2-methylpropanesulfonic acid（AMPS）. The samples were characterized by Fourier transform infrared spectrum（FT-IR）,thermogravimetric analysis-differential scanning calorimetry（TG-DSC） and scanning electron microscope （SEM）,and the critical micelle concentration（CMC） of AMPS obtained by surface tension measurement was 0.072 mol/L. The reaction mechanism of the polymerization was studied by AMPS contents as well. The results show that the microspheres possesse a good dispersity,a uniform size with the diameter of 20 μm and Tg of 170 ℃. Every microsphere is clustered by fine microsphere with the diameter of 0.1 μm.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第4期149-152,共4页
Polymer Materials Science & Engineering
基金
安徽省高校自然科学基金资助项目(KJ2009B054Z
KJ2009B120Z)
关键词
小微球集合型微球
无皂乳液聚合
2-丙烯酰胺基-2-甲基丙磺酸
甲基丙烯酸甲酯
临界胶束浓度
fine particles clustered microspheres
emulsifier-free emulsion polymerization
2-acrylamido-2-methylpropanesulfonic acid
methyl methacrylate
critical micelle concentration
