RADICAL COPOLYMERIZATION AND DETERMINATION OF THERMAL STABILITY OF SOME NEW SUBSTITUTED PHENYL MALEIMIDE POLYMERS

Abstract

This article investigated a study and application of Kuhan-mark Howink Sakwada equation on some maleimides polymer
and find out a relation in between intrinsic viscosity and molecular weight. Proposed work taken some maleimide
substituted compounds and their study. In the research we selected some new maleimides monomer like as N-(ONitrophenyl)
maleimide, N-(M-Nitro phenyl) maleimide and N-(P-Nitro phenyl) maleimide. Monomers were
copolymerized with methyl methacrylate. Synthesized homo and copolymers were characterized by FT-IR and 1H-NMR
spectroscopy. Prepared monomers were polymerized at 12, 36, 48 and 72 hours on magnetic stirrer and AIBN and BPO
used as a free radical initiator. THF and DMF were used as a solvent. Percentage yield were determined with time
variations. Number average and weight average molecular weight was determined by the gel permission
chromatography. Intrinsic viscosity was determined by the Hubelhod viscometer and thermal stability was determined by
the TGA techniques and starting degradation temperature and final degradation temperature was recorded.
Polymerization reaction proceed via free radical is determined by the PDI index. Percentage composition of N and C is
calculated in monomer and polymer. This article focused that what actual shape of the homopolymer and copolymer
showing in solvent and determined by Kuhan-mark Howink Sakwada equation.