The photochemical degradation of unpigmented and unstabilised polypropylene films can be monitored coloremetrically following reaction of the carbonyl groups produced, with 2,4-dinitrophenylhydrazone produced under acidic conditions.
Reference:
Maasdorp, A. & Black, W. 1983. A colorimetric estimation of the degree of photochemical degradation of polypropylene films. http://hdl.handle.net/10204/13097 .
Maasdorp, A., & Black, W. (1983). A colorimetric estimation of the degree of photochemical degradation of polypropylene films Retrieved from http://hdl.handle.net/10204/13097
Maasdorp, APB, and WA Black A colorimetric estimation of the degree of photochemical degradation of polypropylene films. 1983. http://hdl.handle.net/10204/13097
Maasdorp A, Black W. A colorimetric estimation of the degree of photochemical degradation of polypropylene films. 1983 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/13097
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