Abstract
Blends and interpenetrating networks of polychloral with polystyrene, poly (methyl methacrylate), and poly(methyl acrylate) as addition polymers have been successfully prepared in the forms of cylinders (plugs) or of films of 0.03-mm thickness by sequential polymerization. The addition polymers are completely extractable, but about 30% of the polychloral is degraded during the extraction. The polystyrene extracted from the polychloral—polystyrene blends was of relatively low molecular weight. This is attributed to the high chain transfer activity of chloral for styrene polymerization in the presence of chloral. Poly (methyl methacrylate) has a comparable molecular weight, as judged by its inherent viscosity, whether the polymer has been prepared in the presence or in the absence of chloral or polychloral. In the presence of crosslinking agents, divinylbenzene for styrene, and ethylene dimethacrylate for methyl methacrylate, interpenetrating networks of polychloral were obtained; it appears that about 30% of the olefinic polymer (polystyrene) is not crosslinked and can be extracted. Poly(methyl methacrylate) is completely crosslinked. TGA was found to be a simple technique to analyze the composition of the polymer blends.
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Corley, L., Kubisa, P. & Vogl, O. Haloaldehyde Polymers. V. Polymer Blends Involving Chloral Polymers. Polym J 9, 47–59 (1977). https://doi.org/10.1295/polymj.9.47
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DOI: https://doi.org/10.1295/polymj.9.47