摘要
首次采用丁二酰氯和１，４－二溴甲苯与线型双端羟基四氢呋喃齐聚物进行分子内的成环反应，制得了环型四氢呋喃聚醚。综合沉淀分级试样的绝对分子量的测定、端基测定、红外光谱和核磁共振测定结果证明，合成产物系环型四氢呋喃齐聚物。
Ring shaped PTHF oligomers are synthesized for the first time by using linear PTHF oligomers which have two OH end groups to react with a) butanedioyl chloride, b) 1,4 dibromomethylbenzene, their absolute molecular weight have been obtained by VPO method. Meanwhile, their molecular weights from endgroup determine method are ∝, i.e. they have no endgroups. Furthermore, the data of molecualr weights investigated by IR and NMR spectra methods are coincided with those from VPO method. Results of several different aspects have shown that the products have the ring shaped structure.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1999年第4期26-29,共4页
Polymer Materials Science & Engineering
关键词
环型
四氢呋喃
齐聚物
VPO法
ring shaped PTHF, VPO method, end group titration, IR, NMR
