Graft modification of highly chlorinated polyethylene (HCPE) with methyl methacrylate by the mechanochemistry reaction. I. Synthesis and characterization

• Published in: Journal of applied polymer science Vol. 89; no. 3; pp. 811 - 816
• Main Authors: Zhao, Ji-Ruo, Feng, Ying, Chen, Xin-Feng
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc., A Wiley Company 18.07.2003; Wiley
• Subjects: Applied sciences; copolymerization; Exact sciences and technology; graft copolymers; highly chlorinated polyethylene (HCPE); NMR; Organic polymers; Physicochemistry of polymers; polyethylene (PE); Polymerization; Preparation, kinetics, thermodynamics, mechanism and catalysts; copolymerization; Graft copolymer; Mechanochemical polymerization; graft copolymers; polyethylene (PE); Experimental study; Methyl methacrylate copolymer; Grafting; Optimization; Operating conditions; NMR; Chlorinated ethylene polymer; highly chlorinated polyethylene (HCPE); Liquid solid reaction; Halogenated ethylene derivative copolymer; Methyl methacrylate
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.11934

Highly chlorinated polyethylene‐graft‐methyl methacrylate (HCPE‐g‐MMA; HCPE with chlorine contents > 60%), obtained by a mechanochemistry reaction, is discussed in detail. A two‐roll mill was used in the process. The reaction conditions affecting the structure of HCPE‐g‐MMA copolymers were measured in terms of calculation of graft efficiency (GE), graft degree (GD), and copolymerization rate/homopolymerization rate (Rc/Rh) by 1H‐NMR spectroscopy. Based on these results, it is concluded that the chlorine contents of HCPE, the additional amount of MMA, and the mechanochemistry reaction time all have impacts on the structure of the polymer. The results also confirm that grafting is very much favored by the mechanochemistry reaction. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 811–816, 2003