Structure-property relationship of castor oil based diol chain extended polyurethanes (PUs)

Kendaganna Swamy, B. K. and Siddaramaiah and Somashekar, R. (2003) Structure-property relationship of castor oil based diol chain extended polyurethanes (PUs). Journal of Materials Science, 38 (3). pp. 451-460. ISSN 1573-4803

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Abstract

A series of 1,4-butane diol and 1,6-hexane diol based chain extended polyurethanes (PUs) have been prepared using castor oil with different diisocyanates such as methylene bis (phenyl isocyanate) (MDI), toluene-2,4-diisocyanate (TDI) and hexa methylene diisocyanate (HMDI) as crosslinkers. The prepared aliphatic diol based chain extended PU's have been characterised for physico-mechanical properties such as density, tensile strength, percentage elongation at break, tensile modulus and surface hardness; and optical properties like total transmittance and haze. The properties imparted by the chain extenders and diisocyanates on PUs have been explained on the basis of chemical structure. Effect of heat aging on mechanical properties of PUs have also studied. These changes have been interpreted quantitatively in terms of microcrystalline parameters computed using wide-angle X-ray scattering (WAXS) data.

Item Type:	Article
Subjects:	M Polymer Science > Polymer Science
Divisions:	PG Centre Mandya > Polymer Science
Depositing User:	LA manjunath user
Date Deposited:	12 Sep 2019 07:20
Last Modified:	12 Sep 2019 07:20
URI:	http://eprints.uni-mysore.ac.in/id/eprint/8076

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