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  ______    _____     ______   _    _     _____   
 /_   _//  |  ___||  /_   _// | || | ||  / ____|| 
   | ||    | ||__    `-| |,-  | || | || / //---`' 
  _| ||    | ||__      | ||   | \\_/ || \ \\___   
 /__//     |_____||    |_||    \____//   \_____|| 
 `--`      `-----`     `-`'     `---`     `----`

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Text this: PH effect of coagulation bath on the characteristics of poly(acrylic acid)-grafted and poly(4-vinylpyridine)-grafted poly(vinylidene fluoride) microfiltration membranes