四氢呋喃聚合向丁二酸酐链转移的研究  

Studies on Chain Transfer to Succinic Anhydride of THF Polymerization

作　　者：栗方星[1,2] 马克勤[1,2] 陈琰[1,2] 文佳[1,2] 霍玉杰 

机构地区：[1]南开大学化学系 [2]天津安普公司

出　　处：《高等学校化学学报》1996年第9期1492-1494,共3页Chemical Journal of Chinese Universities

摘　　要：四氢呋喃聚合向丁二酸酐链转移的研究栗方星，马克勤，陈琰，文佳，霍玉杰（南开大学化学系，天津，３０００７１）（天津安普公司，天津）关键词ＴＨＦ，ＴＤＩ，ＣＨ_３ＣＯＳｂＣｌ_６，表观聚合速率常数在ＴＨＦ阳离子聚合的过程中，活性中心向丁二酸酐链转移［１］可...During the polymerization process of THF, active center can transfer to succinic anhydride and produce polyether-ester block copolymer.If TDI is added into the system,the relative velocity of polymerization and chain transfer reaction can be controlled.It is found that when the molar ratio of TDI/catalyst is 1, the polymerization can be accelerated , while the transfer rate decreases during the latter period of the reaction . However, when this ratio is 5/1, the propagation rate changes little, but the transfer rate increases. In the systems without TDI, with one time and five times moles of TDI as the mole of catalyst at 8℃, the apparent propagation rate constants of THF, kp are 5. 55×10￣(-3),7. 10× 10￣(-3) and 8.10×10￣(-3) L/(mol·s), respectively; the transfer rate constants k_(tr) are 1.33 × 10￣(-3),0.43 × 10￣(-3) and 5. 55×10￣(-3) L/(mol·s), respectively.

关 键 词：聚合速率常数 四氢呋喃 聚合 丁二酸酐 链转移 

分 类 号：O626.11[理学—有机化学] O631.5[理学—化学]