Grafting of glycidyl methacrylate onto ethylene-propylene copolymer: Preparation and characterization

✍ Scribed by XiAomin Zhang; Zhihui Yin; Lixia Li; Jinghua Yin

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 335 KB
• Volume: 61
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960926)61:13<2253::aid-app2>3.0.co;2-b

✦ Synopsis

130022, People's Republic of China SYNOPSIS Ethylene-propylene copolymer (EP) was functionalized with glycidyl methacrylate (GMA) by means of a radical-initiated melt grafting reaction. FTIR and ESCA were used to characterize the formation of EP-g-GMA copolymers. The content of GMA in EPg-GMA was determined by using hydrochloric acid/xylene titration. Effects of concentrations of GMA and dicumyl peroxide on grafting rate were studied. It was found that contact angles of the water on surfaces of EP-g-GMA samples increased with increasing content of GMA in EPg-GMA. The influence of the content of GMA on the crystallization structure of EP-g-GMA was investigated by DSC and WAXD. Compared with the plain EP, the crystallization temperature of propylene blocks of EP-g-GMA increased over 10 K, and the melting temperature and crystallinity decreased somewhat. Functionalization of E P led to the change of the crystal form of propylene blocks from the mixed form of a and fl into the 01 form.