私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

相關(guān)鏈接
聯(lián)系方式
  • 通信地址:長春市前進(jìn)大街2699號(hào)
  • 郵編:130012
  • 電話:0431-85168022
  • 傳真:0431-85168022
  • Email:guansw@jlu.edu.cn
當(dāng)前位置:> 首頁 > 論文著作 > 正文
36. High proton conductivity of sulfonated methoxyphenyl-containing poly(arylene ether ketone) for proton exchange membranes
作者:Bo Dong,Yan Wang,Jinhui Pang,Shaowei Guan,Zhenhua Jiang
關(guān)鍵字:poly(arylene ether ketone), proton exchange membrane
論文來源:期刊
具體來源:RSC ADVANCES,2015,5,107982-107991
發(fā)表時(shí)間:2015年
A series of sulfonated methoxyphenyl-containing poly(arylene ether ketone)s (SMP-PAEKs) were synthesized via polycondensation from 2-(3-methoxy)phenylhydroquinone and other commercial monomers, followed by a postsulfonation approach under mild reaction conditions. Controlled substituted sites and the degree of sulfonation were realized by using various quantities of 2-(3-methoxy)phenylhydroquinone, given that sulfonated polymers (SMP-PAEK) can be soluble in common organic solvents such as DMSO, NMP, and DMAc. The tough and transparent polymer membrane was prepared by a solution casting method, exhibiting excellent mechanical properties and high proton conductivities. The tensile stress at maximum load and elongation at break of these membranes are 30.0-32.4 MPa and 120-171% in a dry state respectively. The proton conductivities of these membranes are higher than that of Nafion 117 in water. In particular, SMP-PAEK-80 with an IEC of 1.62 mequiv. g(-1) exhibited the highest proton conductivity of 294 mS cm(-1) at 80 degrees C in water. In addition, SMP-PAEK-90 with an IEC of 1.83 mequiv. g(-1) exhibited suitable proton conductivities in different relative humidities (RHs) (30-98%) at 80 degrees C, which was higher than Nafion 117. The clear micro-phase separation morphology was observed by SAXS, which was powerful evidence to explain their high conductive behaviors. In addition, the current density of the SMP-PAEK-80 membrane was measured to be 235 mA cm(-2) at 0.36 voltage (V) under fully hydrated conditions at room temperature with 1.5 bar back pressure during a MEA cell performance test.
主站蜘蛛池模板: 海宁市| 望谟县| 申扎县| 云安县| 公安县| 昔阳县| 大丰市| 临湘市| 三亚市| 商南县| 台北市| 远安县| 当涂县| 绍兴县| 武义县| 深州市| 丹东市| 泊头市| 阜平县| 马山县| 新乡县| 桐城市| 维西| 娄烦县| 新晃| 嘉义市| 安乡县| 辽宁省| 元朗区| 拉萨市| 原平市| 绵阳市| 万安县| 房山区| 阳朔县| 深泽县| 镇雄县| 渑池县| 富平县| 民权县| 榆林市|