Characterization of Poly(Ethylene Glycol) Thin Films on Silicon for Implantable Microdevices

2002 ◽  
pp. 327-336
Author(s):  
Sadhana Sharma ◽  
Robert W. Johnson ◽  
Tejal A. Desai
Keyword(s):  
Thin Films ◽  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene

Thin-film synthesis and microstructure characterization of the poly(vinyl alcohol) matrix with functionalized carbon nanotubes

2007 ◽  
Vol 22 (7) ◽  
pp. 1872-1878 ◽  
Author(s):  
Xiaoling He ◽  
Song Xu ◽  
Andrey V. Sklyarov ◽  
Steven Hardcastle
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Carbon Nanotubes ◽  
Ethylene Glycol ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Poly Ethylene Glycol ◽  
Nanocomposite Thin Films ◽  
Poly Ethylene

We report on the synthesis and surface characterization of thin-film nanocomposites using functionalized single-walled carbon nanotubes (CNTs) with a diamine-terminated oligomeric poly(ethylene glycol) [poly(ethylene glycol) bis (3-aminopropyl)-terminated 1500]. The functionalized CNT samples are soluble in highly polar solvents. Their common solubility allows for the intimate mixing of the functionalized nanotubes with the matrix polymer–poly(vinyl alcohol) by dip coating and wet casting to form nanocomposite thin films. We demonstrate the alignment of the CNT bundles in the thin films that are formed without the external field forces. We present our results and discuss alignment reorientations from the characterizations of the nanocomposite thin films by using a Raman spectrometer, scanning electron microscopy, and atomic force microscopy.

scholarly journals The Optical and Microstructural Characterization of the Polymeric Thin Films with Self-Assembly Nanoparticles Prepared by Spin-Coating Techniques

Crystals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 390 ◽  
Author(s):  
Kwang-Ming Lee ◽  
Chia-Hong Huang ◽  
Chia-Yu Chang ◽  
Chung-Cheng Chang
Keyword(s):  
Thin Films ◽  
Ethylene Glycol ◽  
Self Assembly ◽  
Annealing Temperature ◽  
Excitation Wavelength ◽  
Poly Ethylene Glycol ◽  
Pl Spectrum ◽  
Pl Intensity ◽  
Poly Ethylene

anhydride-poly(ethylene glycol) co-polymer (A-PEGCP) has been synthesized from maleic anhydride, poly(ethylene glycol) and bisphenol-A diglycidyl ether without using any organic solvent. The thin films produced from A-PEGCP solution were spin-coated on ITO-coated glass. The nanoparticles are observed in the thin films. It is proposed that the nanoparticle is built by a self-assembly process with bisphenol-A aggregates and poly (ethylene glycol) moieties. The effects of concentration, thermal annealing, excitation wavelength and moisture on the optical and nanostructured characterization of the thin films are investigated in this study. Photoluminescence (PL) spectrum of the thin film on ITO-coated glass has a peak of about 450 nm that extends from 360 to 550 nm under 325 nm excitation. The increase in PL intensity is accompanied by a red shift of PL spectrum as concentration increases. Moreover, the slightly red shift of PL spectrum is also observed as annealing temperature increases. Meanwhile, PL intensity negligibly decreases with annealing temperature. The degradation in PL intensity is apparent due to moisture. The excitation-wavelength dependent photoluminescence (EWDP) is observed in the thin film. UV-Vis absorption spectra of the thin films are red-shifted with concentration due to more molecular aggregation. The highest occupied molecular orbital (HOMO) energy is −9.52 eV. The optical band-gap energy is 4.09–4.44 eV.

Preparation and characterization of poly (ethylene glycol) grafted Ca-alginate fibers by γ-irradiation for biomedical applications

2013 ◽  
Vol 27 (2) ◽  
pp. 216-226 ◽  
Author(s):  
Md. Kamal Khan ◽  
Mohammed Mizanur Rahman ◽  
Bodrun Nesa ◽  
Romana Nasrin ◽  
Swajal Molla ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Biomedical Applications ◽  
Poly Ethylene Glycol ◽  
Γ Irradiation ◽  
Alginate Fibers ◽  
Poly Ethylene ◽  
Ca Alginate

AB2 Y-shaped miktoarm star conductive polyaniline-modified poly(ethylene glycol) and its electrospun nanofiber blend with poly(ε-caprolactone)

RSC Advances ◽  
2015 ◽  
Vol 5 (46) ◽  
pp. 36715-36726 ◽  
Author(s):  
Bakhshali Massoumi ◽  
Somayeh Davtalab ◽  
Mehdi Jaymand ◽  
Ali Akbar Entezami
Keyword(s):  
Ethylene Glycol ◽  
Electrospun Nanofibers ◽  
Synthesis And Characterization ◽  
Electrospun Nanofiber ◽  
Poly Ethylene Glycol ◽  
Conductive Polyaniline ◽  
Miktoarm Star ◽  
Poly Ethylene ◽  
Type Ab

The aim of this study is the synthesis, and characterization of novel type AB2 Y-shaped miktoarm star conductive polyaniline-modified poly(ethylene glycol), and preparation of its electrospun nanofibers blend with poly(ε-caprolactone).

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