Effect of the copolymer composition on theK anda constants of the Mark-Houwink equation: Styrene-methyl methacrylate random copolymers

2002 ◽  
Vol 40 (6) ◽  
pp. 562-571 ◽  
Author(s):  
P. Na Songkhla ◽  
J. Wootthikanokkhan
Keyword(s):  
Methyl Methacrylate ◽  
Random Copolymers ◽  
Copolymer Composition

scholarly journals Preparation and modification of itaconic anhydride-methyl methacrylate copolymers

2007 ◽  
Vol 72 (12) ◽  
pp. 1507-1514 ◽  
Author(s):  
Milos Milovanovic ◽  
Snezana Trifunovic ◽  
Lynne Katsikas ◽  
Ivanka Popovic
Keyword(s):  
Free Radical ◽  
Methyl Methacrylate ◽  
1H Nmr Spectroscopy ◽  
Copolymer Composition ◽  
Reactivity Ratios ◽  
Complete Conversion ◽  
Monomer Reactivity Ratios ◽  
Itaconic Anhydride ◽  
Methacrylate Copolymers ◽  
Butyl Amine

The free radical copolymerisation of itaconic anhydride and methyl methacrylate in solution was studied at 60 ?C. The copolymer composition was determined by 1H-NMR spectroscopy and the obtained monomer reactivity ratios were calculated, rITA = 1.35?0.11; rMMA = 0.22?0.22 (by the Fineman-Ross method) and rITA = 1.27?0.38; rMMA = 0.10?0.05 (by the Mayo-Lewis method). The synthesised copolymers were modified by reaction with di-n-butyl amine. The copolymer composition after amidation was determined by elemental analysis via the nitrogen content. Amidation of the anhydride units in the copolymers with di-n-butyl amine resulted in complete conversion to itaconamic acid.

Vinylidene chloride-methyl methacrylate random copolymers: sequence length effects on IR spectra and thermal stability

1989 ◽  
Vol 22 (7) ◽  
pp. 2994-2999 ◽  
Author(s):  
Philip L. Kumler ◽  
Mohammed H. Kailani ◽  
Barton J. Schober ◽  
Kimberly A. Kolasa ◽  
Stanton J. Dent ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Methyl Methacrylate ◽  
Ir Spectra ◽  
Random Copolymers ◽  
Sequence Length ◽  
Vinylidene Chloride ◽  
Chloride Methyl ◽  
Length Effects
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