کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5366735 1388354 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modification of surface properties of electrospun polyamide nanofibers by means of a perfluorinated acridine
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Modification of surface properties of electrospun polyamide nanofibers by means of a perfluorinated acridine
چکیده انگلیسی

Polyamide 6 (PA6) nanofibers were prepared from formic acid solutions by using electrospinning technique. The fibers were smooth, defects free and with diameters smaller than 200 nm. Small amounts of a perfluorinated acridine were added as dopant to the feed solution to modify the wettability of the fibers. The effect of doping on the contact angle values is well apparent. The contact angle values go from 50° of pure PA6 to 120° when 6% of acridine is added. A comparison between fibers and films of pure and doped polyamide 6 was carried out in order to determine the effect of morphology on wettability. Thermal annealing near the Tg of the polymer promoted the segregation of the molecules to the surface, reaching contact angles of 131° with smaller amounts (4%) of acridine. The surface segregation was also promoted by time aging.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 20, 15 August 2007, Pages 8360-8364
نویسندگان
, , , , , ,