The binary random in-chain silyl-hydride multi-functionalized poly(styrene/butadiene/isoprene and dimethyl[4-(1-phenylvinyl) phenyl]silane) (PS-DPESiH, PB-DPESiH, PI-DPESiH) copolymers were successfully synthesi...The binary random in-chain silyl-hydride multi-functionalized poly(styrene/butadiene/isoprene and dimethyl[4-(1-phenylvinyl) phenyl]silane) (PS-DPESiH, PB-DPESiH, PI-DPESiH) copolymers were successfully synthesized. These functionalized copo- lymers were prepared in hexane with n-BuLi as the initiator at 50℃ for 4 h. The silyl-hydride groups were introduced into polymer backbones quantitatively by living anionic polymerization. The copolymers were determined through 1H NMR, size exclusion chromatography (SEC) and differential scanning calorimetry (DSC) techniques, while the number of silyl-hych-ide groups was calculated and discussed.展开更多
借助流变仪研究了苯基三苯乙炔基硅烷(PTPES)、乙烯基三苯乙炔基硅烷(VTPES)、二苯基二苯乙炔基硅烷(BPBPES)3种单体及其聚合物(TSAR)的流变性能,并利用热分析技术分析了共聚物的反应动力学,建立了热分解机理函数。流变分析表明,3种单...借助流变仪研究了苯基三苯乙炔基硅烷(PTPES)、乙烯基三苯乙炔基硅烷(VTPES)、二苯基二苯乙炔基硅烷(BPBPES)3种单体及其聚合物(TSAR)的流变性能,并利用热分析技术分析了共聚物的反应动力学,建立了热分解机理函数。流变分析表明,3种单体加工窗口超过150℃,具有良好的加工性能;热重分析显示,800℃时聚合物残炭率在70%左右;8种动力学分析证实,聚合物热分解反应级数n=4,反应活化能E=131.2 k J/mol。展开更多
基金sponsored by the National Natural Science Foundation of China(Nos.21034001,21174021)
文摘The binary random in-chain silyl-hydride multi-functionalized poly(styrene/butadiene/isoprene and dimethyl[4-(1-phenylvinyl) phenyl]silane) (PS-DPESiH, PB-DPESiH, PI-DPESiH) copolymers were successfully synthesized. These functionalized copo- lymers were prepared in hexane with n-BuLi as the initiator at 50℃ for 4 h. The silyl-hydride groups were introduced into polymer backbones quantitatively by living anionic polymerization. The copolymers were determined through 1H NMR, size exclusion chromatography (SEC) and differential scanning calorimetry (DSC) techniques, while the number of silyl-hych-ide groups was calculated and discussed.
文摘借助流变仪研究了苯基三苯乙炔基硅烷(PTPES)、乙烯基三苯乙炔基硅烷(VTPES)、二苯基二苯乙炔基硅烷(BPBPES)3种单体及其聚合物(TSAR)的流变性能,并利用热分析技术分析了共聚物的反应动力学,建立了热分解机理函数。流变分析表明,3种单体加工窗口超过150℃,具有良好的加工性能;热重分析显示,800℃时聚合物残炭率在70%左右;8种动力学分析证实,聚合物热分解反应级数n=4,反应活化能E=131.2 k J/mol。