6.
Synthesis, Characterization and Thermal stability of Maleimide
polymers with modified-monomers
B. L.
Hiran* and Shiv Narayan Paliwal
Polymer Research and Chemical Kinetics laboratory Department of
Chemistry, M. L. S. University, Udaipur (Raj.) India.313 001
* Email: hiranbl@rediffmail.com Email:
paliwalsn_1982in@yahoo.co.in
Abstract:
The
novel functionalized N- [4-N′-(anilino amino carbonyl) phenyl]
maleimide (APM) was synthesized starting from p-aminobenzoic
acid maleic anhydride and phenyl hydrazine. The homopolymer of
APM is synthesized by free radical using AIBN in tetra
hydrofuran (THF) solvent at 65˚C. The copolymer of APM and
methyl methacrylate (MMA) were synthesized using AIBN as a free
radical initiator in THF. The nine copolymer samples were
synthesized from different feed ratio of comonomers. The
copolymer composition and reactivity ratio were determined by
nitrogen-elemental analysis and fineman ross method. The
reactivity ratio and Alfrey Price Q-e value is as follows: r1(APM)
=0.14, r2(MMA)=0.72, Q=0.23 and e=2.25. The homo and copolymers
were also synthesized in various solvent initiator system and
different time. The synthesized homopolymer and copolymer were
characterized by intrinsic viscosity, solubility test, FT-IR,
1H-NMR spectral analysis and elemental analysis. The molecular
weight was determined by gel permeation chromatography (GPC) and
thermal behavior was studied by thermo gravimetric analysis. It
was observed that such polymers shows better thermal stability
than the polymers of vinyl monomers.
Keywords:
N-[4-N′-(anilino amino-carbonyl) phenyl] maleimide, MMA,
Reactivity Ratio, Molecular weight, Characterization.
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