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Sulfonated Poly(arylene ether sulfone) Multi-Block Copolymers with Selectively Cross-Linked Domains for Proton Exchange Membranes
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2022-09-08 , DOI: 10.1021/acsapm.2c01204 Tao Wang 1 , Si Li 1 , Tanner Corrado 1 , Lingyu Yang 1 , Jennifer L. Schaefer 1 , Ruilan Guo 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2022-09-08 , DOI: 10.1021/acsapm.2c01204 Tao Wang 1 , Si Li 1 , Tanner Corrado 1 , Lingyu Yang 1 , Jennifer L. Schaefer 1 , Ruilan Guo 1
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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 cross-linking 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.
中文翻译：
用于质子交换膜的具有选择性交联结构域的磺化聚（亚芳基醚砜）多嵌段共聚物
报道了一种用于质子交换膜的具有选择性交联疏水域的磺化聚（亚芳基醚砜）多嵌段共聚物膜的简便设计。可交联的线性多嵌段共聚物通过偶联遥爪亲水二磺化低聚物 (BPS100) 和含有可交联烯丙基衍生酚酞部分的遥爪疏水低聚物 (PPA0) 制备。交联膜是通过烯丙基官能化疏水块与季戊四醇四（3-巯基丙酸酯）作为交联剂之间的紫外引发硫醇-烯交联反应制备的。具有高度交联的疏水嵌段和柔韧的亲水嵌段，与交联的无规共聚物相比，选择性交联的多嵌段共聚物膜表现出显着改善的尺寸稳定性和质子传导性。具有最长亲水嵌段长度的交联膜显示出显着的 123 mS/cm 的质子电导率，在 25 °C 时体积膨胀率为 25%。在最高离子交换容量水平 (2.25 meq/g) 和最长嵌段长度下，交联多嵌段共聚物膜在整个相对湿度范围内均优于 Nafion。
更新日期：2022-09-08
中文翻译：
用于质子交换膜的具有选择性交联结构域的磺化聚（亚芳基醚砜）多嵌段共聚物
报道了一种用于质子交换膜的具有选择性交联疏水域的磺化聚（亚芳基醚砜）多嵌段共聚物膜的简便设计。可交联的线性多嵌段共聚物通过偶联遥爪亲水二磺化低聚物 (BPS100) 和含有可交联烯丙基衍生酚酞部分的遥爪疏水低聚物 (PPA0) 制备。交联膜是通过烯丙基官能化疏水块与季戊四醇四（3-巯基丙酸酯）作为交联剂之间的紫外引发硫醇-烯交联反应制备的。具有高度交联的疏水嵌段和柔韧的亲水嵌段，与交联的无规共聚物相比，选择性交联的多嵌段共聚物膜表现出显着改善的尺寸稳定性和质子传导性。具有最长亲水嵌段长度的交联膜显示出显着的 123 mS/cm 的质子电导率，在 25 °C 时体积膨胀率为 25%。在最高离子交换容量水平 (2.25 meq/g) 和最长嵌段长度下，交联多嵌段共聚物膜在整个相对湿度范围内均优于 Nafion。
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