Coswald Stephen Sipaut @ Mohd Nasri, and N. Ahmad, and R. Adnan, and Ismail Ab Rahman, and M. N M Ibrahim, (2010) Effects of starting material and reaction temperature on the morphology and physical properties of polyurethane foams. Cellular Polymers, 29 (1). pp. 1-25. ISSN 0262-4893
Official URL: http://www.scopus.com/record/display.url?view=basi...
Polyurethane foams (PUFs) were prepared by mixing poly (ethylene glycol)block-poly(propylene glycol)-block-poly(ethylene glycol) and isocyanates in the ratio of 1:1.03 in the presence of additives such as catalyst, blowing agent and surfactant. The effects of types of starting material in PUF formulation on cell morphology and properties were investigated using scanning electron microscopy (SEM). The results indicated that starting material highly affected the morphology of PUF cells. Process parameters such as concentration of starting material and reaction temperature were investigated using SEM, foam density and capacity of water absorption. It was found that foam density depends on the cell size. While, the capacity of water absorption is depends on the percentage of the open cells and cell size. PUF samples have cell size between 200 to 600 μm, density in the range of 0.03 to 0.06 g cm-3, percentage of open cell at 25 to 60% and capacity of water absorption between 6 to 30%. Copyright © 2010 Smithers Rapra Technology.
|Uncontrolled Keywords:||Cell morphology, Cell size, Concentration of, Foam densities, Open-cell, Poly(propylene glycol), Polyurethane Foam, Process parameters, Reaction temperature, SEM, Starting materials, Blowing agents, Ethylene, Ethylene glycol, Foams, Morphology, Polyethylene glycols, Polyethylene oxides, Propylene, Rigid foamed plastics, Scanning electron microscopy, Surface active agents|
|Subjects:||?? TP1080-1185 ??|
|Divisions:||SCHOOL > School of Engineering and Information Technology|
|Deposited By:||IR Admin|
|Deposited On:||08 Mar 2011 15:09|
|Last Modified:||18 Feb 2015 11:33|
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