摘要
本文研究了蓖麻油聚氨酯(COPU)/聚甲基丙烯酸丁酯(PBMA)交联共聚物(简称ABCP)的动态力学性能,并将其与COPU/PBMA,IPN的动态力学性能作了比较。发现在ABCP中两组份的阻尼峰互相叠加,形成半相容体系,而在IPN中阻尼峰有个宽的平台。透射电镜照片表明,IPN具有更大的相区结构。这些结果证明,化学交联比物理缠结具有更大的强迫互容性。通过对COPU/乙烯类聚合物(VP)交联共聚物相容性的研究,可知COPU/PBMA,COPU/PST和COPU/PMMA交联共聚物,在动态力学性能上是半相容体系,而COPU/PMA和COPU/PBA交联共聚物是互容体系。
The dynamic mechanical properties of the copolymer networks,AB-crosslinked polymers(ABCP), from a castor oil polyurethane(COPU)and poly(butyl methactylate) (PBMA) werequite different from that of IPN which have the similar composition to ABCP.In the caseof COPU/PBMA ABCP,the damping peaks of the two components shift inward and over-lap each other,which reveals that the polymer system is partially compatible.However, thedamping peak of COPU/PBMA 1PN is a wide plateau.The electron micrographs show thelarger domain sizes in IPN than in ABCP.The iesults indicates that the effect of chemicalcrosslinking on the compatibility is more notable than the physical entanglement. ABCP'sfrom COPU/PST and COPU/PMMA are partially compatible like that of COPU/PBMA,while COPU/PMA and COPU/PBA aro completely compatible.
出处
《应用化学》
CAS
CSCD
北大核心
1989年第3期6-9,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金
关键词
蓖麻油
聚氨酯
AB交联聚合物
Castor oil
Polyurethane
AB crosslinking polymer
Compatibility
