کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7833878 1503523 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Studies on biodegradable polyurethane-SWCNTs nanocomposite films by covalent approach: Physicochemical, electric and mechanical properties
ترجمه فارسی عنوان
مطالعات بر روی فیلم های نانو کامپوزیت پلی یورتان پلی یورتان زیست تخریب شده با روش کووالانسی: خواص فیزیکی شیمیایی، الکتریکی و مکانیکی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
Biodegradable control polyurethane (PU) film as well as PU nanocomposite films (PU-SWCNTs), covalently incorporated with minor amount of hydroxyl single walled carbon nanotubes [(OH)n-SWCNTs] have been formulated to investigate the influence of SWCNTs on the matrix of PU (3-dimensional network of soft and hard segments). Biodegradable polyol, polycaprolactone triol (PCL, ∼70%), diisocyanate (TDI, ∼21%) and 1, 4- butane diol (BDO) as chain extender were taken to react at 70 °C under inert atmosphere in the presence of amine catalyst (PMDETA) via prepolymer process to obtain the control PU film by casting approach, whereas in situ addition of (OH)n-SWCNTs into the above formulation can afford the covalently incorporated PU-SWCNTs films by the identical protocol. PU and PU-SWCNTs films loaded with variable quantity of (OH)n-SWCNTs (0.01, 0.03, 0.05, 0.1 and 0.3 wt.%) were characterized to identify the enhancement of their physicochemical properties such as optical, electrical conductivity, thermal and mechanical properties. These film samples were characterized by FT-IR, Raman, ATR-FT IR, UV-vis DRS, solid state 13C NMR, XRD, impedance measurements, DSC, TGA, EDX, SEM, AFM, optical microscope and tensile strength data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 449, 15 August 2018, Pages 745-754
نویسندگان
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