杂萘联苯共聚醚砜的磺化

Sulfonation of copoly(ether sulfone)s containing phthalazinone moieties

以浓硫酸为磺化剂对杂萘联苯共聚醚砜进行磺化改性,合成了一系列不同磺化度的磺化杂萘联苯共聚醚砜(SPPBES)。考察了硫酸浓度、磺化反应温度和反应时间、杂萘联苯共聚醚砜与硫酸的质量体积比对产物磺化度的影响。随着硫酸浓度增加、磺化反应温度升高、反应时间的延长,SPPBES的磺化度增大。调节磺化反应条件,制得了磺化度在0.37～1.04之间的SPPBES。利用FT-IR、1H-NMR和TGA对SPPBES进行了表征,测试了SPPBES的含水率和溶胀率。

Sulfonated copoly（ether sulfone）s containing phthalazinone moieties （SPPBESs）（m（DHPZ）：m（BP）=6：4） with various sulfonation degree（SD） were prepared with sulfuric acid as sulfonating agent.The effects of the concentration of sulfuric acid,reaction temperature and time,and concentration ratio of PPBES/sulfuric acid on the SD of polymers were investigated.The SD of SPPBESs were determined by using acid base titration method,the experimental results showed that the SD increased as the increase of the concentration of sulfuric acid,reaction temperature and time,and decreased as the increase of concentration ratio of PPBES/sulfuric acid.SPPBESs with SD ranging from 0.37 to 1.04 were obtained.The FT-IR and 1H-NMR spectra of SPPBESs confirmed that sulfuric acid groups were introduced into the polymer chain successfully.The effects of SD and temperature on water uptake and swelling ratio of SPPBESs were investigated.It was found that water uptakes and swelling ratios of SPPBES increased as the increase of SD and temperature.