Ring-opening metathesis polymerization of dicyclopentadiene by tungsten catalysts supported on polystyrene

✍ Scribed by Hong Li; Zheng Wang; Binglin He

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 87 KB
• Volume: 147
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(99)00131-4

✦ Synopsis

Ž . Ž . Ring-opening metathesis polymerization ROMP of dicyclopentadiene DCPD was conducted by using catalyst systems Ž . WCl -Et AlCl, WCl -PhCOMe -Et AlCl and their polystyrene supported counterparts. Experimental results indicate that 6 2 6 2

the acetophenone modified catalyst system shows better catalytic properties than the unmodified system does and that supporting the catalysts on a polystyrene can improve further the catalyst systems' catalytic properties. As a result, the Ž . Ž . polymer yield of the ROMP increased, the mechanical properties of NIS notched impact strength , TS tensile strength of Ž . synthesized polydicyclopentadiene PDCPD enhanced. The mechanism in which supporting improves the properties of the catalyst systems is discussed.