Study on thermal properties of polyurethane-urea elastomers prepared with different dianiline chain extenders
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Majid Barikani
Abstract
A number of polyurethane prepolymers based on polycaprolactone diol (PCL) and 4,4′-diphenyl methane diisocyanate (MDI) were synthesized and extended with different dianilines such as: 4,4′-methylenebis(2,6-diisopropylaniline) (M-DIPA), 4,4′-methylenebis(2,6diethylaniline) (M-DEA), 4,4′-methylenebis(ortho chloroaniline) (MOCA), 4,4′-methylenebis(2-isopropyl-6-methylaniline) (M-MIPA) and 4,4′-methylenebis(3-chloro-2,6-diethylaniline) (M-CDEA). Infrared (IR) spectroscopy was used to check the end of the polymerization reaction in addition to the polymer characterization. The effect of the dianiline structure on the thermal properties of the cast films were studied through dynamic mechanical measurements (DMTA), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) analysis. It was found that the thermal properties and thermal stability of polyurethane are strongly affected by the molecular structure of the dianiline chain extender.
©2013 by Walter de Gruyter Berlin Boston
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Artikel in diesem Heft
- Masthead
- Masthead
- Original Articles
- Die drool theory
- Melt extrudate swell behavior of POM/EVA/HDPE/nano-CaCO3 composites
- Preparation and characterization of poly(2-hydroxyethyl methacrylate)/ Na-montmorillonite intercalated nanocomposites
- Drying of polyacrylamide-multiwalled carbon nanotube (MWNT) composites with various MWNTs contents: a fluorescence study
- Using the Agrawal integral equation to study the thermal degradation of polyvinyl acetate-montmorillonite-dioctadecyl dimethyl ammonium bromide
- Effect of solvents and thermal annealing on the morphology development of a novel block copolymer ionomer: a case study of sulfonated polystyrene-block-fluorinated polyisoprene
- Superabsorbent hydrogels of poly(sodium acrylate) with crude and exfoliated vermiculites
- Cation exchange characterizations of phosphotungstic acid-doped polyvinyl alcohol/polyethersulfone blend membranes by sodium chloride solution
- The impact of selected granulometric properties of poly(vinyl chloride) on the effectiveness of the extrusion process
- Study on thermal properties of polyurethane-urea elastomers prepared with different dianiline chain extenders
