Decross-linking

These products were further used to produce the networks, which could be decross-linked by acid hydrolysis, providing the models for studying the network structure [276]. 

Photocross-Linkable Epoxy Polymers Bearing Sulfonate Ester Units and Their Redissolution in Water by Thermal Decross-Linking... 

Recent research on IPN s has emphasized thermoplastic IPN s based on physical crosslinks, and the factors controlling the variation of domain sizes in sequential IPN s. Most recently, decross linking and extraction studies on sequential IPN s has led to an improved understanding of the dual phase continuity sometimes present in these materials. The sequential IPN system poly(n-butyl acrylate)/polystyrene is emphasized. 

One approach to the study of dual phase continuity in sequential IPN s is through the decross linking and subsequent dissolving out of one polymer or the other. For example, in a recent study of a polypropylene/EPM morphology, the ethylene-propylene rubber component was dissolved out, leaving a sponge-like structure of polypropylene, as observed via scanning electron microscopy. 

Takata etal. demonstrated a novel reversible cross-Unking-decross-linking system directed toward a new concept for the recycling of cross-linked polymers by utilizing a polyrotaxane network (Scheme 18). The ctoss-linked polymer was prepared from poly(crown ether) that has crown ether units in the main chain and dumbbellshaped axle component that has central disulfide linkage... 

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