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首页> 外文期刊>Journal of Polymer Science, Part A. Polymer Chemistry >Synthesis and properties of novel sulfonated polyimides containing binaphthyl groups as proton-exchange membranes for fuel cells
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Synthesis and properties of novel sulfonated polyimides containing binaphthyl groups as proton-exchange membranes for fuel cells

机译：含联萘基作为燃料电池质子交换膜的新型磺化聚酰亚胺的合成与性能

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摘要

A novel sulfonated diamine monomer, 2,2'-bis(p-aminophenoxy)-1,1'-binaphthyl-6,6'-disulfonic acid (BNDADS), was synthesized. A series of sulfonated polyimide copolymers containing 30-80 mol % BNDADS as a hydrophilic component were prepared. The copolymers showed excellent solubility and good film-forming capability. Atomic force microscopy phase images clearly showed hydrophilic/hydrophobic microphase separation. The relationship between the proton conductivity and degree of sulfonation was examined. The sulfonated polyimide copolymer with 60 mol % BNDADS showed higher proton conductivity (0.0945-0.161 S/cm) at 20-80 degrees C in liquid water. The membranes exhibited methanol permeability from 9 x 10(-8) to 5 X 10(-7) cm(2)/s at 20 degrees C, which was much lower than that of Nafion (2 x 10(-6) cm(2)/s). The copolymers were thermally stable up to 300 degrees C. The sulfonated polyimide copolymers with 30-60 mol % BNDADS showed reasonable mechanical strength; for example, the maximum tensile strength at break of the sulfonated polyimide copolymer with 40 mol % BNDADS was 80.6 MPa under high moisture conditions. The optimum concentration of BNDADS was found to be 60 mol % from the viewpoint of proton conductivity, methanol permeability, and membrane stability. (c) 2006 Wiley Periodicals, Inc.
机译：合成了一种新型的磺化二胺单体2,2'-双（对氨基苯氧基）-1,1'-联萘-6,6'-二磺酸（BNDADS）。制备了一系列含有30-80mol％BNDADS作为亲水性组分的磺化聚酰亚胺共聚物。共聚物显示出优异的溶解性和良好的成膜能力。原子力显微镜相图像清楚地显示出亲水/疏水微相分离。检查了质子电导率和磺化度之间的关系。具有60mol％BNDADS的磺化聚酰亚胺共聚物在液态水中在20-80℃下显示出更高的质子传导性（0.0945-0.161S / cm）。膜在20°C下的甲醇渗透率从9 x 10（-8）到5 X 10（-7）cm（2）/ s，远低于Nafion（2 x 10（-6）cm（ 2）/ s）。所述共聚物在高达300℃下是热稳定的。具有30-60mol％的BNDADS的磺化聚酰亚胺共聚物显示出合理的机械强度;其具有良好的机械强度。例如，在高水分条件下，具有40mol％BNDADS的磺化聚酰亚胺共聚物的最大断裂拉伸强度为80.6MPa。从质子传导率，甲醇渗透性和膜稳定性的观点出发，发现BNDADS的最佳浓度为60mol％。 （c）2006年Wiley Periodicals，Inc.

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