Degradation of polymer blends: Part VII. Photo-oxidation in natural weathering conditions of polyethylene containing styrene-butadiene or styrene-isoprene copolymers

@inproceedings{Getlichermann1994DegradationOP,
  title={Degradation of polymer blends: Part VII. Photo-oxidation in natural weathering conditions of polyethylene containing styrene-butadiene or styrene-isoprene copolymers},
  author={Michel Getlichermann and Arlette Daro and Christiane David},
  year={1994}
}
Abstract The photo-oxidation of a polyethylene (PE) matrix can be initiated by a dispersed unsaturated phase. Photo-initiation of PE degradation is related to the diffusion of small fragments of the easily degraded dispersed phase into the continuous phase; the rate of chain scission of the dispersed phase is thus rate determining. As a consequence, unsaturated polymers which crosslink are very poor photoinitiators of PE degradation. In contrast, polyisoprene blocks which do not crosslink but… CONTINUE READING