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

當前位置:> 首頁 > 論文著作 > 正文
Applied Surface Science-Exploring the synergetic effects of graphene oxide (GO) and polyvinylpyrrodione (PVP) on poly(vinylylidenefluoride) (PVDF) ultrafiltration membrane performance
作者:Xiaojing Chang , Zhenxing Wanga , Shuai Quana , Yanchao Xu , Zaixing Jiang,Lu Shao
關鍵字:GO , membrane
論文來源:期刊
具體來源:Applied Surface Science
發表時間:2014年

Membrane  surface  and  cross-sectional  morphology  created  during  membrane  formation  is  one  of  the

most  essential  factors  determining  membrane  separation  performance.  However,  the  complicated  interactions  between  added  nanoparticles  and  additives  influencing  membrane  morphology  and  performance

during  building  membrane  architectures  had  been  generally  neglected.  In  this  study,  asymmetric  PVDF

composite  ultrafiltration  (UF)  membranes  containing  graphene  oxides  (GO)  were  prepared  by  using  Nmethyl  pyrrolidone  (NMP)  as  solvent  and  polyvinylpyrrodione  (PVP)  as  the  pore  forming  reagent.  In  the

first  time,  the  effects  of  mutual  interactions  between  GO  and  PVP  on  membranes  surface  compositions,

morphology  and  performance  were  investigated  in  detail.  The  variation  in  chemical  properties  of  different  membranes  and  hydrogen  bonds  in  the  membrane  containing  GO  and  PVP  were  confirmed  by

X-ray  photoelectron  spectroscopy  (XPS)  and  Fourier  transform  infrared  spectroscopy-attenuated  total

reflectance  (FTIR-ATR).  Atomic  force  microscopy  (AFM),  scanning  electron  microscopy  (SEM),  and  contact  angle  (CA)  were  utilized  to  clarify  the  synergetic  effects  of  GO  and  PVP  on  morphologies  and  surface

hydrophilicity  of  membranes.  Besides,  water  flux,  bovine  serum  albumin  (BSA)  rejection  and  attenuate

coefficient  were  also  determined  to  investigate  filtration  performance  of  various  membranes.  Compared  with  pure  PVDF  membrane,  the  comprehensive  performance  of  PVDF/GO/PVP  membrane  has  been

obviously  improved.  The  surface  hydrophilicity  and  anti-fouling  performance  were  enhanced  by  the  synergistic  effects  of  incorporated  GO  and  PVP.  When  the  PVP  content  was  0.25  wt.%  and  the  GO  content  was

0.5  wt.%,  the  optimized  performance  can  be  obtained  due  to  the  formation  of  hydrogen  bonds  between

GO  and  PVP.

©  2014  Elsevier  B.V.  All  rights  reserved


主站蜘蛛池模板: 平泉县| 石林| 荔波县| 越西县| 上犹县| 安西县| 鄄城县| 石棉县| 陇南市| 文安县| 正镶白旗| 鄱阳县| 宜都市| 高邑县| 武强县| 新民市| 土默特左旗| 五指山市| 盐边县| 荥经县| 海伦市| 兴化市| 嘉义市| 比如县| 筠连县| 五华县| 绩溪县| 右玉县| 娄烦县| 清镇市| 襄城县| 阿拉善盟| 炉霍县| 宁阳县| 巨野县| 寿阳县| 巩义市| 繁昌县| 紫阳县| 阿尔山市| 伊金霍洛旗|