کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7106738 1460513 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Bio-based waterborne polyurethane/carbon dot nanocomposite as a surface coating material
ترجمه فارسی عنوان
نانوکامپوزیت نقطه ای پلی اورتان / کربن آب بر پایه بیولوژیک به عنوان مواد پوشش سطحی
کلمات کلیدی
پلیمر آب پلی اورتان بسیار زیاد نانوکامپوزیت نقطه کربن، کارایی، پوشش سطح،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Waterborne surface coating materials with low volatile organic compounds (VOCs) are environmentally friendly and hence the most desired materials for the modern society. The present study reports in situ fabricated thermosetting hyperbranched waterborne polyurethane (WPU)/carbon dot (CD) nanocomposites as surface coating materials. CD was used as a nanoreinforcing agent (at 0.25, 0.5 and 1.0 weight percentages) in the nanocomposites. The structures of the waterborne polyurethane and its fabricated thermosetting nanocomposites were analyzed by using different spectroscopic and analytical tools like Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, UV-visible spectroscopy and X-ray diffractometry. The mechanical properties of the pristine thermosetting WPU were significantly improved after incorporation of CD (tensile strength from 4.5 to 8.5 MPa, elongation at break value from 96 to 136%, scratch hardness from 3 to 9 kg, impact strength from 70 to 100 cm). The thermal stability of WPU also enhanced from 250 to 280 °C after incorporation of CD in the matrix. Interestingly, the fabricated nanocomposites demonstrated an excitation wavelength and concentration dependent photoluminance behavior as well as exhibited good transparency. Thus, the fabricated WPU nanocomposites show great potential as low VOC containing environment friendly transparent surface coating material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Organic Coatings - Volume 90, January 2016, Pages 324-330
نویسندگان
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