Cross-linking of polystyrene by Friedel-Crafts chemistry: reaction of p-hydroxymethylbenzyl chloride with polystyrene

Yao, Hongyang and McKinney, Michael A. and Dick, Caroline and Liggat, John J. and Snape, Colin and Wilkie, Charles A. (2001) Cross-linking of polystyrene by Friedel-Crafts chemistry: reaction of p-hydroxymethylbenzyl chloride with polystyrene. Polymer Degradation and Stability, 72 (3). pp. 399-405. ISSN 0141-3910 (http://dx.doi.org/10.1016/S0141-3910(01)00060-X)

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Abstract

p-Hydroxymethylbenzyl chloride was found to be an effective cross-linking agent for polystyrene. The reaction was found to occur by Friedel-Crafts alkylation between the benzyl alcohol/chloride functional groups in the additive and phenyl ring in polystyrene. The reaction was studied by TGA-IR to monitor the evolution of hydrogen chloride and water, and the structure of the resultant gel was analyzed by solid state NMR and elemental analysis. The potential application in flame-retardancy was evaluated using Cone calorimetry.