کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7209095 1469116 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of different post-spin stretching conditions on the mechanical properties of synthetic spider silk fibers
ترجمه فارسی عنوان
تأثیر شرایط مختلف کشش پس از چرخش بر خواص مکانیکی الیاف ابریشم عنکبوت مصنوعی
کلمات کلیدی
الیاف ابریشم عنکبوت مصنوعی، ویژگی های مکانیکی، پس از چرخش، اشکال زدایی، آرژیپور آرنتیا،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
چکیده انگلیسی
Spider silk is a biomaterial with impressive mechanical properties, resulting in various potential applications. Recent research has focused on producing synthetic spider silk fibers with the same mechanical properties as the native fibers. For this study, three proteins based on the Argiope aurantia Major ampullate Spidroin 2 consensus repeat sequence were expressed, purified and spun into fibers. A number of post-spin draw conditions were tested to determine the effect of each condition on the mechanical properties of the fiber. In all cases, post-spin stretching improved the mechanical properties of the fibers. Aqueous isopropanol was the most effective solution for increasing extensibility, while other solutions worked best for each fiber type for increasing tensile strength. The strain values of the stretched fibers correlated with the length of the proline-rich protein sequence. Structural analysis, including X-ray diffraction and Raman spectroscopy, showed surprisingly little change in the initial as-spun fibers compared with the post-spin stretched fibers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 29, January 2014, Pages 225-234
نویسندگان
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