Photodegradable polymers-intrinsic

Intrinsically photodegradable polymers by copolymerization photolytic polymers... 

Intrinsically Photodegradable Polymers by Copolymerization Photolytic Polymers... 

The intrinsic viscosity [>/] is probably the most frequently measured property during the study of polymer photodegradation (Fig. 10.28) (especially in solutions). It is relatively easy to determine, provides an estimate of changes in molecular weight as a result of chain scissions processes. It is generally determined by measuring the relative viscosities (ri i) of a series of solutions... 

The above method is very inconvenient for studying the kinetics of polymer photodegradation in solutions. Considerable time and effort would be saved if, instead of determining rj i for a series of solutions, a single determination at a known concentration might be used to give [f/] directly. Many one-point intrinsic viscosity methods have been developed. Numerous relationships have been proposed, and these have been thoroughly reviewed [624]. 

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