Coloration of polypropylene with interference pigment and the effect of wetting agents on its optical properties
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Coloration of polypropylene with interference pigment with and without dispersing agents, namely propylene glycol and poly (ethylene glycol) were studied. Effect of pigment concentrations and dispersing agents on various color properties of the molded specimens, such as reflectance versus wavelength characteristics, angular dependency, K/S data, and flop index were evaluated using the CIE system with goniospectrophotometer. Surface image analysis was also conducted. Based on the above parameters, design equations were developed. The study revealed that the effective concentration of the interference pigment was 0.5% and better color characteristics were found when poly (ethylene glycol) was used as a dispersing agent.
KeywordsColoration of polypropylene interference pigments optical characterization pigments appearance color measurement color color matching process modeling simulation pigmentation pigment optics plastics
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- (1).Elvers, B., Hawkins, S., and Schulz, G. (Eds.),Ullman’s Encyclopedia of Industrial Chemistry, 5th Ed., Vol. A-20, 348, 1992.Google Scholar
- (2).Hawe-Grant, M. (ed.),Kirk-Othmer Encyclopedia of Chemical Technology, 4th Ed., Vol. 19, 1, 1996.Google Scholar
- (3).Bikales, N.M. (Ed.), “Nacreous Pigments,”Encyclopedia of Polymer Science and Technology, Vol. 10, 193, 1970.Google Scholar
- (4).Zarrel, U. (Ed.),Special Effect Pigments, European Coating Literature, Vincentz, 1, 1998.Google Scholar
- (5).Rane, R.H., Nere, C.K. and Jagtap, R.N., “Iridescent Pigments for Plastic Application,”Popular Plastics & Packaging, Vol. 52, No. 2, 57 (2002).Google Scholar
- (6).Margolis, J.M. (Ed.),Decorating Plastics, Hanser Gardner Publications, NY, 111, 1987.Google Scholar
- (7).Teige, W., “Colorants for Mass Coloration of Polyester,”Colourage, Vol. 40, No. 11, 59 (1993).Google Scholar
- (8).Taylor, J.R. and Foster, H., “The Pigmentation of Acrylic Resins,”J. Soc. Dyers and Col. Vol. 85, No. 12, 579 (1969).Google Scholar