초록 |
Cyclopentadiene(CPD) is a major constituent in the C5-stream of naphtha cracking. Up to now, most C5-streams have not been used as sources of chemicals, but have instead been incinerated as energy sources. Dicyclopentadiene (DCPD), converted form by spontaneous Diels-Alder reaction of two CPD, can be used as monomer for Ring-Opening Metathesis Polymerization because it containes ring strained double bond. When DCPD is heated, tricyclopentadiene (TCPD) and higher oligocyclopentadienes are formed through successive Diels-Alder reactions. In this work, we report the preparation of a new COP employing TCPD as the monomer. The COP, prepared using solely DCPD, exhibits a low Tg of ~100°C. By further addition of bulky TCPD, we can increase Tg to a more attractive region. |