کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5190659 1381213 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Higher-order structures and mechanical properties of stereocomplex-type poly(lactic acid) melt spun fibers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Higher-order structures and mechanical properties of stereocomplex-type poly(lactic acid) melt spun fibers
چکیده انگلیسی
Equimolar blend of poly(l-lactic acid) (PLLA) and poly(d-lactic acid) (PDLA) was melt spun into fibers and the relations among the processing conditions, crystalline structures, thermal properties, and mechanical properties were investigated. Drawing and annealing were performed in order to obtain fiber mainly consisting of the stereocomplex crystal phase. Fibers drawn at various temperatures exhibited either amorphous, highly oriented homo crystal, or the mixture of homo and stereocomplex with a fairly low orientation depending on the drawing temperature. Annealing of the drawn fibers at an elevated temperature higher than the melting temperature of homo crystal increased the stereocomplex content significantly. The fractions of the homo and the stereocomplex crystals strongly depended on the higher-order structure of the drawn fibers and the annealing temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 16, 26 July 2006, Pages 5965-5972
نویسندگان
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