摘要
以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为亲水性链段、甲基丙烯酸甲酯(MMA)为疏水性链段,将二者按不同质量比混合,采用自由基共聚合法制备了单体质量比不同的两亲性共聚物P(AMPS-co-MMA),通过相转变法制备PVDF/P(MMA-co-AMPS)共混改性膜。利用紫外-可见吸收光谱、热失重法分别表征该共聚物的组成和热稳定性能,通过扫描电子显微镜、X-射线衍射仪,以及拉伸实验研究了单体不同比例的两亲性共聚物对共混改性膜的结构及力学性能的影响。结果表明:AMPS和MMA发生了聚合反应;PVDF/P(MMA-co-AMPS)共混改性膜具有典型的非对称结构;随AMPS含量增加,复合膜中PVDF的β晶型含量降低,当AMPS/MMA质量比为1/3时,膜的拉伸强度和断裂伸长率达最大,分别为1.8448N/mm^2、18.0630%。
The 2-acrylamide-2-methyl propane sulfonic acid（AMPS）was used as hydrophilic chain segment and methyl methacrylate（MMA）as the hydrophobic chain segment.According the different mass ratio the two kinds of monomers were blended.The amphiphilic copolymer P（AMPS-co-MMA）was prepared by the free radical copolymerization.Through the phase shift method,the PVDF/P（MMA-co-AMPS）blend modified membrane were prepared.Using UV-Vis absorption spectroscopy（UV）,thermo-gravimetric（TG）,scanning electron microscopy（SEM）,X ray diffraction（XRD）and the mechanical properties testing,the effect of different monomer mass ratio on the structure and mechanical properties of membrane was discussed.Results showed that between two monomers AMPS and MMA occurred polymerization reaction.The membrane had typical asymmetric structure.With the increasing of AMPS,the content of crystalline reduced.When quality of AMPS/MMA ratio was 1/3,the maximum tensile strength and maximum elongation of membrane were1.8448N/mm^2,18.0630%,respectively.
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第6期126-128,131,共4页
New Chemical Materials
基金
黑龙江省大学生创新创业实验项目
关键词
AMPS
MMA
自由基聚合法
相转变法
PVDF
2-acrylamide-2-methyl propane sulfonic acid
methyl methacrylate
free radical polymerization
phase shift method
polyvinylide fluoride（PVDF）
