Polymerization of acrylonitrile

Srinivasan, N. T. ; Santappa, M. (1958) Polymerization of acrylonitrile Die Makromolekulare Chemie, 26 (1). pp. 80-91. ISSN 0025-116X

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/macp.19...

Related URL: http://dx.doi.org/10.1002/macp.1958.020260107


Polymerization of acrylonitrile in homogeneous medium in dimethyl formamide at 50°C and 60°C (to be inserted in all places where temperatures are mentioned) in precipitation medium in toluene at 50°C and 60°C, and in bulk at 35° to 55°C, all initiated by α, α'-azobis-isobutyronitrile has been studied. Transfer constants with their activation energies for polyacrylonitrile radicals and dimethyl formamide or toluene have been evaluated. By measurements of rates and degrees of polymerization, rates of initiation have been evaluated in homogeneous and precipitation media. Values of K, A',kp/kt½ and their respective activation energies have been evaluated. The abnormalities of exponents for initiator and monomer concentrations in the rate equation are discussed. The applicability of normal homogeneous medium kinetics is examined. Apparent values of kp/kt½ in bulk have been evaluated at temperatures ranging from 35°C to 55°C.

Item Type:Article
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Deposited On:11 Jun 2011 08:40
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