Wang, Tao published the artcileSulfonated Poly(arylene ether sulfone) Multi-Block Copolymers with Selectively Cross-Linked Domains for Proton Exchange Membranes, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate), the main research area is sulfonated polyarylene ether sulfone proton exchange membrane.
A facile design of sulfonated poly(arylene ether sulfone) multi-block copolymer membranes with selectively cross-linked hydrophobic domains is reported for proton exchange membranes. The cross-linkable linear multi-block copolymers are prepared via coupling telechelic hydrophilic disulfonated oligomers (BPS100) and telechelic hydrophobic oligomers (PPA0) containing cross-linkable allyl-derivatized phenolphthalein moieties. The cross-linked membranes are prepared through UV-initiated thiol-ene crosslinking reactions between allyl-functionalized hydrophobic blocks with pentaerythritol tetrakis(3-mercaptopropionate) as a cross-linker. With highly cross-linked hydrophobic blocks and flexible hydrophilic blocks, the selectively cross-linked multiblock copolymer membranes exhibit remarkably improved dimensional stability and proton conductivity compared to the cross-linked random copolymers. The cross-linked membrane with the longest hydrophilic block length shows a remarkable proton conductivity of 123 mS/cm with a suppressed volume swelling ratio of 25% at 25°C. At the highest ion exchange capacity level (2.25 meq/g) and the longest block length, the cross-linked multi-block copolymer membrane outperforms Nafion over the full relative humidity range.
ACS Applied Polymer Materials published new progress about Absorption. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Recommanded Product: Pentaerythritol tetra(3-mercaptopropionate).
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