کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7833519 | 1503521 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystallization, rheology behavior, and antibacterial application of graphene oxide-graft-poly (l-lactide)/poly (l-lactide) nanocomposites
ترجمه فارسی عنوان
کریستالیزاسیون، رفتار رئولوژیک و کاربرد آنتی باکتریال نانوکامپوزیت های گرافن اکسید گرافت پلی (ال-لاکتید) / پلی (ال-لاکتید)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
چکیده انگلیسی
Poly l-lactide nanocomposites with graphene oxide (GO) were prepared via solution casting in this work. With the aim of improving the interface compatibility, the GO grafted with poly l-lactide (GO-g-PLLA) was synthesized by the ring-opening polymerization of l-lactide on the surface of lyophilized GO. The chemical structure, morphology and thermal properties of GO and GO-g-PLLA were compared by X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM) and thermal gravimetric analysis (TGA), respectively. Based on the isothermal and non-isothermal crystallization of PLLA/GO-g-PLLA blends, the added GO-g-PLLA acted as nucleating agents to enhance the crystallization rate of PLLA, with its special surface grafted with the PLLA matrix. The introduced GO-g-PLLA sheets also improved the viscosities of PLLA as rheological enhancers, which is favorable for the processibility of PLLA. The added GO-g-PLLA also endow PLLA nanocomposites with significantly improved electrical conductivity. More interesting, this work presented the antibacterial activity of PLLA/GO and PLLA/GO-g-PLLA nanocomposites electrospinning membrane for Escherichia coli and Staphylococcus aureus, which further widen the biomedical application of PLA.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 451, 1 September 2018, Pages 315-324
Journal: Applied Surface Science - Volume 451, 1 September 2018, Pages 315-324
نویسندگان
Yuan Kang, Chaoli Wang, Xuetao Shi, Guangcheng Zhang, Peng Chen, Jian Wang,