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Quaternizations of benzyl bromide units in brominated poly(isobutylene-co-p-methylstyrene), or BIMS, elastomers with tertiary amines can be readily accomplished either by solution techniques or by melt reactive mixing. At temperatures of 130 o C and above, the nucleophilic substitution of benzyl bromide with ammonium bromide occurs instantaneously in an internal mixer. The conversion is around...
The structure and morphology development during the deformation of metallocene based ethylene–propylene copolymers with dominant propylene moiety (C3 M-EP) and its isotactic polypropylene (M-iPP) blends were investigated by simultaneous small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXD) using synchrotron radiation, high temperature tensile testing and differential scanning...
Quaternization of the end-groups of α,ω-(dimethylamino)polyisoprenes with monofunctional, difunctional and trifunctional halides (iodides and bromides) has been undertaken on polymers of different molecular weights (M n = 6000 and 38 000 g mol -1 ). The thermal stability of the ammonium end-groups is somewhat better when iodide counteranions are present. Quaternization increases...
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