Polymer blends with polyfmethyl methacrylate

The thermal degradation of poly(vinyl bromide), of blends of this polymer with polyfmethyl methacrylate) and of the copolymer of vinyl bromide and methyl methacrylate have been investigated by sub-ambient thermal volatilization analysis and thermogravimetry. The results are discussed in relation to the use of the vinyl bromide unit as a Are retardant. 

The method has been used to study the thermodynamics of various polymer blends The results of vapour sorption have been compared with I.G.C. for PVC, polystyrene, and polyfmethyl methacrylate) with various solvents and the interaction parameters have been found to agree within experimental error... 

Figure 7. Height (AFM) and friction (LFM) images of a spin-cast polystyrene/polyfmethyl methacrylate) polymer blend [PS/PMM A (1 10 w/w)], obtained with (a) gold-coated and (b) SiO, tips under perfluorodecahn.

FIG. 14-19. Plots of log E and log tan 5 against temperature at a frequency of 110 Hz for a two-phase blend of equal weight fractions of polyfmethyl methacrylate) and slightly cross-linked polyfbutyl acrylate). Curves calculated from modified Kemer equation for a polyfmethyl methacrylate) matrix with inclusions of polyfbutyl acrylate) containing 14.4% poly(methyl methacrylate) by volume. (Dickie and Cheung. ) Reproduced, by permission, from the Journal of Polymer Science. 

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