The discovery of heterogeneous stereospecific catalyst systems by Ziegler and Natta in 1953 heralded the birth of a wide variety of new polymers such as highly crystalline 1953 (isotactic) polypropylene. Polypropylene (PP) is now firmly established in the textile industry in applications such as carpets, ropes and twines and upholstery fabric, and has a foothold in the apparel market. A further problem with polypropylene is its poor resistance to sunlight, which causes a rapid deterioration of its useful properties (photodegradation)
Reference:
Trollip, N. 1985. A review of the effect of impurities on the photostability of polypropylene. (Wol). http://hdl.handle.net/10204/4701 .
Trollip, N. (1985). A review of the effect of impurities on the photostability of polypropylene (Wol). Retrieved from http://hdl.handle.net/10204/4701
Trollip, NG A review of the effect of impurities on the photostability of polypropylene. Wol. 1985. http://hdl.handle.net/10204/4701
Trollip N. A review of the effect of impurities on the photostability of polypropylene. 1985 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/4701