摘要
以过氧化苯甲酰(BPO)作引发剂,通过溶液接枝聚合法把苯乙烯接枝到碱处理过的聚偏氟乙烯(PVDF)膜上,磺化后得到聚偏氟乙烯接枝苯乙烯磺酸(PVDF g PSSA)电解质膜。研究发现碱处理过的PVDF膜更容易与苯乙烯发生接枝聚合反应,且接枝率与碱处理时间呈线性变化关系。用红外光谱、差示扫描量热法检测PVDF膜经过接枝以及随后的磺化所发生的膜结构变化,并用SEM观察PVDF膜接枝前后以及接枝磺化后产物PVDF g PSSA膜的形貌及硫分布。研究表明,用KOH碱处理过的PVDF膜与苯乙烯进行接枝共聚反应时,PVDF膜结构在接枝前后和磺化前后发生变化,说明苯乙烯确实接枝到PVDF膜上。
A new method based on a solution graft technique was used to prepare poly(vinylidene fluoride) grafted polystyrene sulfonated acid (PVDF-g-PSSA) proton exchange membrane. Polystyrene is easily grafted into PVDF, which has been treated in KOH solution. There is a linear relationship between the degree of grafting and the treatment time in KOH solution. Fourier transform infrared spectroscopy and differential scanning calorimetry were used to characterize changes of the membrane's microstructures after grafting and sulphonation. The morphology of the membrane′s microstructures after grafting and sulphonation was studied by scanning electrolytic microscope. The results showed that the styrene has been grafted on the PVDF.
出处
《功能高分子学报》
CAS
CSCD
2004年第3期452-456,共5页
Journal of Functional Polymers
