A STUDY OF GRAFT COPOLYMERS: I. PREPARATION AND VISCOSITY BEHAVIOR
- 1 May 1958
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 36 (5) , 858-868
- https://doi.org/10.1139/v58-125
Abstract
Graft polymers were prepared by the redox polymerization of styrene in the presence of oxidized polystyrene or copolymers of styrene and 4-vinylcyclohexene-1; the maximum number of hydroperoxide groups per thousand monomeric units in the oxidized polymers was 18. Evidence that grafting had indeed occurred was obtained from measurements of monomer disappearance, of the decrease in hydroperoxide content of the backbone polymer during reaction, and of the infrared absorption by the polymer before and after the grafting procedure.Although the experimental results clearly support the conclusion that branching occurred, values of Huggins' k′ for both unfractionated and fractionated graft polymers were no higher than for linear polystyrene (0.39 < k′ < 0.41 in butanone). It was concluded that, though k′ is sensitive to bushy branching, Huggins' k′ is not measurably affected by the presence in a polymer of a few linear branches per molecule.Keywords
This publication has 9 references indexed in Scilit:
- Viscosity of dilute solutions of linear and branched polyvinyl acetateJournal of Polymer Science, 1956
- Preparation of graft copolymers from autoxidized polystyrene derivativesJournal of Polymer Science, 1955
- The viscosity slope constant k′—ternary systems: Polymer–polymer–solventJournal of Polymer Science, 1955
- Normal and cross‐linked polystyrene. II. Viscosity behavior of polystyrene cross‐linked in emulsion polymerizationJournal of Polymer Science, 1952
- Analytical studies concerned with the reactions between organic peroxides and thio-ethers : Analysis of organic peroxidesAnalytica Chimica Acta, 1951
- Systems Manifesting Superposed Elastic and Viscous BehaviorThe Journal of Chemical Physics, 1945
- The Viscosity of Dilute Solutions of Long-Chain Molecules. IV. Dependence on ConcentrationJournal of the American Chemical Society, 1942
- Viscosities of Solutions of Polyvinyl ChlorideJournal of the American Chemical Society, 1942
- The Catalysis of Polymerization by Ozonides. II1Journal of the American Chemical Society, 1933