The relation between the molecular weight and intrinsic viscosity of polymethyl acrylate |
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Authors: | Prof. G. S. Misra P. K. Mukherjee |
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Affiliation: | (1) Department of Post Graduate Studies and Research in Chemistry, University of Jabalpur, Jabalpur (M. P.), India;(2) Present address: Department of Chemistry, University of Jammu, 180001 Jammu, India |
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Abstract: | Summary A series of unfractionated and fractionated samples of polymethyl acrylate of different low molecular weights have been prepared by homogeneous solution. polymerization in dimethyl formamide in presence of , '-azo-(-cyano-n-valeric acid) as initiator under a variety of conditions. The number-average molecular weights have been determined by end-group titrations and vapour pressure osmometry. The following []-M relationships for polymethyl acrylate have been obtained.[] = 33.5 x 10–5M0.63 for unfractionated samples in benzene at 25 °C. [] = 3.89 x 10–5M0.843 for fractionated samples in benzene at 35 °C.With 2 tables |
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