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Fundamental processes associated with reactive blending were explored for a system composed of polyamide (PA) and deuterated polysulfone having a reactive phthalic anhydride end group (R) (dPSU-R) diluted with a low molecular weight hydrogenous polysulfone (low-hPSU) by neutron reflectivity (NR). By preparing bilayer films composed of a mixed film of dPSU-R/low-hPSU and a PA film, an intriguing phenomenon...
Morphology of reactively compatibilzed polymer blends was discussed in terms of particle asphericity (ζ)-size (a) map. Reactive melt blending of polysulfone (PSU) with polyamide 6 (PA) was carried out at 20/80 (PSU-PA) wt ratio by adding a few wt% of reactive PSUs; maleic anhydride-grafted PSU (PSU-MAH) or phthalic anhydride-terminated PSU (PSU-PhAH). Morphology development was investigated by light...
Reactive melt blending of polyamide 6 (PA) and polysulfone (PSU) was carried out and the effect of the copolymer architecture on the pull-out of the copolymer in situ-formed during reactive blending was studied. To create various block and graft copolymers by reactive blending, three types of reactive PSU were prepared and used; maleic anhydride-grafted PSU, carboxylic-grafted PSU, and phathalic anhydride-terminated...
Reactive blending of dissimilar polymers involves in situ reactions of functionalized components to form a block or graft copolymer at the interface between phases. The copolymer is believed to play a role of the emulsifier to prevent particle coalescence and to improve interfacial adhesion. A mixture of non-reactive polysulfone (PSU) and small amount of reactive PSU, phthalic anhydride-terminated...
Reactive melt blending of polyamide 6 (PA) and polysulfone (PSU) was carried out and the interfacial behavior of in situ-formed block copolymer was studied. A series of reactive PSUs with different functional groups at chain ends were prepared and used; PSU-epoxy, -triazine and -phthalic anhydride. The morphology development during melt blending was investigated by light scattering and transmission...
By reactive blending of polyamide 6 (PA) with polysulfone (PSU) using a gram-scale mixer (Mini–Max Molder), we prepared a series of PA/PSU (80/20wt. ratio) blends with various diameters of PSU particles; 70nm by using phthalic anhydride-terminated PSU (PSU-PhAH), 0.4μm by epoxy-terminated PSU, 0.45μm by maleic anhydride-grafted PSU and 1.3μm by non-reactive PSU. By light scattering (LS), small-angle...
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