Free radical copolymerization of 1-vinyl naphthalene with styrene,methyl methacrylate,and acrylonitrile |
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Authors: | D Braun A Essmail Pour W K Czerwinski |
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Institution: | (1) Present address: Deutsches Kunststoff-Institut, Darmstadt, Germany |
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Abstract: | Investigations on free radical copolymerization of 1-vinyl naphthalene (1-VNph, monomerM
2) with styrene (St), methyl methacrylate (MMA) and acrylonitrile (AN) (monomersm
1) in bulk at 60°C with AIBN as initiator are presented. Relative reactivity ratios were calculated by the Kelen-Tüdös method yielding:r
st=0.70 ±0.23 andr
1–VNph=2.02 ±0.40 for system St/1-VNph;r
MMA=0.32 ±0.10 andr
1–VNph=0.57 ±0.07 for system MMA/1-VNph andr
AN=0.11 ±0.03 andr
1–VNph=0.45 ±0.09 for system AN/1-VNph.Q, e values for 1-VNph according to Alfrey, Price scheme were calculated toQ
1–VNph=1.02,e
1–VNph=–0.62. |
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Keywords: | Freeradicalcopolymerization 1-vinyl-naphtalene styrene methylmetha-crylate acrylonitril relativereactivity ratios Q- ande-values |
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