Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Comparative study on matrix resins in two low?density polyethylene based cable insulation materials with different voltage grades
Novel composite materials were successfully developed by inclusion of copolyimide molecular brushes with poly(methacrylic acid) side chains into polyphthalamide matrix. Dense nonporous membranes from these materials were investigated using atomic force microscopy, mechanical tests, and membrane techniques. The developed membranes are promising for separation of the azeotropic methanol–methyl tert?butyl ether mixture by pervaporation.AbstractMacromolecules of complex architecture find application as modifiers of commercial polymeric membrane materials. In this work, copolyimide molecular brushes (coPI) composed of polyimide backbone and poly(methacrylic acid) side chains were used to modify poly(m?phenylene iso?phthalamide) (PPA). Structure, physical, mechanical, and transport properties of dense nonporous PPA/coPI membranes containing up to 10?wt% coPI were studied. The effect of included coPI on the membrane structure was estimated using atomic force microscopy and mechanical tests. The coPI modifier contributes to the additional formation of free volume elements evenly distributed throughout the membrane. Transport properties of PPA/coPI membranes were investigated via sorption tests and pervaporation separation of methanol (MeOH) and methyl tert?butyl ether (MTBE) mixtures. The inclusion of coPI modifier in the PPA membrane leads to an increase in the total flux of the membrane. The highest separation factor was found for the PPA/coPI membrane containing 10?wt% coPI; transport properties of the best membrane were compared with the literature data on separation of the azeotropic MeOH–MTBE mixture.
» Publication Date: 12/01/2024
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
