Raman Microimaging

Raman microimaging is used to estimate the effect of the siUca filler on phase separation in binary polymer blends composed of brominated poly(isobutylene-co-para-methyl) styrene (BIMS) and butyl rubber (HR). The domain sizes, relative concentration of polymer components within domains, and distribution of particulate silica filler and zinc stearate curative are characterised for blends of different compositions and history of ageing treatments. The presence of increased concentrations of precipitated silica results in better [Pg.38]

Using micro-Raman imaging three blends consisting of PP/PE/EPR copolymer, PBT/polycarbonate/LDPE, and SAN copolymer/styrene-maleic anhydride copolymer/polydimethylphenylene oxide were studied with regard to compositional and morphological heterogeneities (221). [Pg.39]

Another good example of using Raman spectroscopy in the polymer industry is to investigate polymer blends. Raman microimages have been used to investigate the spatial distributions of the components in a blend of brominated poly(isobutylene-co-para-methylstyrene (BIMS) and cis-1-4-polybutadiene (BR) containing silica, zinc stearate, thiate, and other additives (21). A Raman spectrum of a blend is shown in Fig. 7-33. Specific bands can be assigned to BIMS, BR, silica, and zinc stearate. A 10 x 10 xm contour... [Pg.358]

Indianapolis, In., 5th-8th May, 1998. Paper 7. 012 APPLICATION OF RAMAN MICROIMAGING IN CHARACTERISATION OF POLYMERS... [Pg.76]

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