أرسل هذا في رسالة قصيرة: Effect of a direct sulfonation reaction on the functional properties of thermally-crosslinked electrospun polybenzoxazine (PBz) nanofibers

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