کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1650324 1517330 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly porous fibers prepared by electrospinning a ternary system of nonsolvent/solvent/poly(l-lactic acid)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Highly porous fibers prepared by electrospinning a ternary system of nonsolvent/solvent/poly(l-lactic acid)
چکیده انگلیسی

In this work, a facile method for fabricating fibers with micro- and nano-porous structure by electrospinning a ternary system of nonsolvent/solvent/poly(l-lactic acid) is presented. Poly(l-lactic acid) (PLLA) was dissolved in a mixture of dichloromethane (solvent) and butanol (nonsolvent) with a certain ratio. During the electrospinning, the evaporation of solvent and nonsolvent would take the composition of polymer fluid jet to enter the two phase region of the ternary phase diagram, since the solvent is more volatile than the nonsolvent. Thus the jet yielded to different phase separated structures, and further evaporation of the residual nonsolvent would lead to porous fibers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 63, Issues 3–4, 15 February 2009, Pages 415–418
نویسندگان
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