Synthesis and characterization of poly(allyl methacrylate) obtained by free radical initiator

Date

2008-01-01

Author

Vardareli, Tugba Kantav
Keskin, Selda
Usanmaz, Ali

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Allyl methacrylate was polymerized in CCl4 solution by alpha,alpha'-azoisobutyronitrile at 50, 60, and 70 degrees C. The kinetic curves were auto-accelarated types at 60 and 70 degrees C, but almost linear at 50 degrees C. Arrhenius activation energy was 77.5 kJ/mol. The polymer was insoluble in common organic solvents. It was characterized by FT-IR, NMR, DSC, TGA and XPS methods. About 98-99% of allyl side groups were remained as pendant even after completion of the polymerization. The spectroscopic and thermal results showed that polymerization is not a cyclopolymerization type, but may have end group cyclization. The high molecular weight is the main cause of a polymer being insoluble even in the early stage of the polymerization. Molecular weight of 1.1106 for a soluble polymer fraction was measured by light scattering method. The Tg of polymer was 94 degrees C, and after curing at 150-200 degrees C, increased to 211 degrees C. The thermal pyrolysis of polymer at about 350 degrees C gave an anhydride by linkage type degradation, and side group cyclization. The XPS analysis showed the presence of radical fragments of AIBN (initiator) and CCl4 (solvent) associated with oligomers.

Subject Keywords

Materials Chemistry, General Chemistry, Polymers and Plastics, Ceramics and Composites

URI

https://hdl.handle.net/11511/57756

Journal

JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY

DOI

https://doi.org/10.1080/10601320701863783

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

T. K. Vardareli, S. Keskin, and A. Usanmaz, “Synthesis and characterization of poly(allyl methacrylate) obtained by free radical initiator,” JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY, pp. 302–311, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/57756.