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

相關鏈接
聯系方式
  • 通信地址:天津市西青區賓水西道399號天津工業大學材料科學與工程學院
  • 郵編:300387
  • 電話:022-83955785
  • 傳真:022-83955055
  • Email:yipingzhao@tjpu.edu.cn
當前位置:> 首頁 > 論文著作 > 正文
Dry–wet spinning of temperature-sensitive PVDF hollow-fiber membranes at different bore fluid flow rates
作者:Xiang Shen, Yiping Zhao, Qiang Zhang, Li Chen
關鍵字:Poly(vinylidene fluoride),Poly(N-isopropylacrylamide),Hollow-fiber membrane,Temperature-sensitive,Bore fluid flow rate
論文來源:期刊
具體來源:Journal of Ploymer Research
發表時間:2013年
In this work, dry–wet spinning was conducted to fabricate poly(vinylidene fluoride)-g-poly(Nisopropylacrylamide) (PVDF-g-PNIPAAm) copolymer hollow-fiber membranes. The effect of the bore fluid flow rate (BFFR) on the structure and performance of each hollow-fiber membrane was investigated by X-ray photoelectron spectroscopy (XPS), field emission scan electronic microscopy (FESEM), pore-size measurements, mechanical property evaluations, and a filtration experiment. It was found that the grafted PNIPAAm chains aggregated on the inner surface of the fiber membrane due to the effect of the bore fluid. When the permeation temperature was increased from 20 to 45 °C, a drastic reduction in the pure-water flux and a remarkable increase in the retention of bovine serum albumin (BSA) were observed at around32 °C, indicating that the as-prepared fiber membranes exhibit excellent temperature sensitivity. Poresize measurements confirmed that both the mean pore size and the porosity increase with increasing BFFR, endowing the fiber membranes with high pure-water fluxes and low retentions of BSA.
主站蜘蛛池模板: 衡阳县| 四子王旗| 贡觉县| 宣武区| 铅山县| 同心县| 泰宁县| 麻城市| 黄平县| 台中县| 工布江达县| 龙井市| 应城市| 开阳县| 长宁县| 会泽县| 华宁县| 获嘉县| 修武县| 梅河口市| 平山县| 香港| 关岭| 格尔木市| 泸水县| 会东县| 鹿邑县| 宜君县| 濮阳市| 大化| 永仁县| 郴州市| 木兰县| 师宗县| 武宁县| 五大连池市| 河东区| 庐江县| 德格县| 马龙县| 柘荣县|