A differential scanning calorimetry study of plasma irradiation grafting of nascent polyethylene reactor powder

✍ Scribed by Jun Tian; Xiao Lin; Jiping Xu; Baotong Huang

• Publisher: John Wiley and Sons
• Year: 1995
• Tongue: English
• Weight: 393 KB
• Volume: 55
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1995.070550510

✦ Synopsis

The melting behavior of poly(methy1 methacrylate)-grafted nascent polyethylene reactor powder by plasma irradiation was studied by differential scanning calorimetry (DSC). The grafting yield ranged from 11 to 190%. Grafting was found to lower both melting point and heat of fusion during the first run of DSC determination. The heat of fusion was used to calculate the apparent grafting yield of the samples. There was little strain induced by plasma-irradiated grafting on the surface of the polyethylene crystals. A method to determine the covalent grafting yield in the graft copolymer systems was developed.