英语翻译The co-SPI membranes with smaller IEC values displayed much lower WUsand the dimensional changes in thickness direction were significantlydecreased,though the expansion in plane direction didnot change too much or even became stronger.The

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英语翻译The co-SPI membranes with smaller IEC values displayed much lower WUsand the dimensional changes in thickness direction were significantlydecreased,though the expansion in plane direction didnot change too much or even became stronger.The

英语翻译The co-SPI membranes with smaller IEC values displayed much lower WUsand the dimensional changes in thickness direction were significantlydecreased,though the expansion in plane direction didnot change too much or even became stronger.The
英语翻译
The co-SPI
membranes with smaller IEC values displayed much lower WUs
and the dimensional changes in thickness direction were significantly
decreased,though the expansion in plane direction did
not change too much or even became stronger.The anisotropic
swelling property of co-SPI membranes in water is quite like
other side-chain-type SPIs [21],such as R1 as shown in Table 2.
Some other SPIs with sulfonated groups directly attached in the
polymer main chain also displayed anisotropic properties [22].

英语翻译The co-SPI membranes with smaller IEC values displayed much lower WUsand the dimensional changes in thickness direction were significantlydecreased,though the expansion in plane direction didnot change too much or even became stronger.The
离子交换能力(IEC)值较小的co-SPI膜片显示出了低得多的WUs(工作单元?),且厚度方向的尺寸变化大为减少,而平面方向的膨胀并无太大变化甚至变得更强.co-SPI膜片在水中的各向异性膨胀性与其它边链型SPIs[21],如表2中的R1,很相像.一些其它直接附于聚合物主链、带磺化群的SPIs也显示出各向异性特性[22].