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Cellulose photodegradation

Natural Polymers.—Two comprehensive review articles have appeared on wool" and cellulose photodegradation. Holt and Milliganhave examined the photo-oxidation of serine, threomine, and cystine side chains in wool. Serine is converted into a-carboxyglycine, cystine to a-formylglycine, and threomine to a-acetylglycine. Waters et have shown that the ph oto-... [Pg.541]

Keywords Biocomposites Biodegradation Biopolymers Cellulose Photodegradation... [Pg.507]

Research on the weathering and mechanism of photo-degradation of cellulose is reviewed. It is pointed out that many factors such as dyes and delustrants, in the case of regenerated cellulose fibers, as well as the ambient atmosphere and the wavelength of the irradiation may affect the rate of degradation. Recent work on the photodegradation of oxidized cellulose is described. [Pg.177]

The photooxidation of polymers on the other hand continues to decline in attention although there is special interest in natural cellulosic-based materials. Bio- and photodegradable plastics are important for agricultural usage although interest here is again in decline. The same applies to polymer stabilisation where commercial applications dominate very much with much emphasis on the practical use of stabilisers. For dyes and pigments stability continues to be a major issue. [Pg.335]

N. David, Hony-Tang-Lie Gul Photodegradation of cellulose nitrateZZPoZww. photochem. 7 (1986), 299-310. [Pg.168]

Natural Polymers and Cellulose Esters The photodegradation of painted wood panels has been found to fail at the wood paint interface 4 while acid treatment of methylcellulose accentuates its rate of photodegradation . Silk fibres have been found to form a roll-like structure after laser ablation with 193 nm light whereas the weatherability of lacquer coated leather has been investigated in a number of weatherometers . Poly(acrylic acid) up to 25% w/w has been found... [Pg.446]

Quinones are effective compounds for the photodegradation of polystyrene (105-107)tpolyisoprene (108.109) polypropylene (110)tpolyamides (1113>polyurethanes (97) and, cellulose (112). [Pg.271]

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See also in sourсe #XX -- [ Pg.127 , Pg.128 ]



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Photodegradation of cellulose

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