Optically active polyurethane@indium tin oxide nanocomposite: Preparation, characterization and study of infrared emissivity

Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2012.05.045· OSTI ID:22215717

Yang, Yong ^[1]; Zhou, Yuming ^[1]; Ge, Jianhua ^[1]; Yang, Xiaoming ^[2]

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1. School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189 (China)
2. Suzhou Sidike New Material Technology Co., Ltd., Suzhou 215400 (China)

Highlights: ► Silane coupling agent of KH550 was used to connect the ITO and polyurethanes. ► Infrared emissivity values of the hybrids were compared and analyzed. ► Interfacial synergistic action and orderly secondary structure were the key factors. -- Abstract: Optically active polyurethane@indium tin oxide and racemic polyurethane@indium tin oxide nanocomposites (LPU@ITO and RPU@ITO) were prepared by grafting the organics onto the surfaces of modified ITO nanoparticles. LPU@ITO and RPU@ITO composites based on the chiral and racemic tyrosine were characterized by FT-IR, UV–vis spectroscopy, X-ray diffraction (XRD), SEM, TEM, and thermogravimetric analysis (TGA), and the infrared emissivity values (8–14 μm) were investigated in addition. The results indicated that the polyurethanes had been successfully grafted onto the surfaces of ITO without destroying the crystalline structure. Both composites possessed the lower infrared emissivity values than the bare ITO nanoparticles, which indicated that the interfacial interaction had great effect on the infrared emissivity. Furthermore, LPU@ITO based on the optically active polyurethane had the virtue of regular secondary structure and more interfacial synergistic actions between organics and inorganics, thus it exhibited lower infrared emissivity value than RPU@ITO based on the racemic polyurethane.

• OSTI ID: 22215717
• Journal Information: Materials Research Bulletin, Vol. 47, Issue 9; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
COMPOSITE MATERIALS
EMISSIVITY
FOURIER TRANSFORMATION
INDIUM
INFRARED SPECTRA
NANOSTRUCTURES
POLYURETHANES
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
SURFACES
THERMAL GRAVIMETRIC ANALYSIS
TIN OXIDES
TRANSMISSION ELECTRON MICROSCOPY
TYROSINE
X-RAY DIFFRACTION