Polymer chain segment orientation during stress relaxation

  title={Polymer chain segment orientation during stress relaxation},
  author={B. D. Lawrey and Robert K. Prud'homme and Jeffrey T Koberstein},
This report presents results on simultaneous measurement of stress and molecular orientation on uniaxially stretched polymer films. Stress is measured using a force transducer and orientation using infrared dichroism. A set of deuterated polystyrene samples were prepared with deuterated blocks at either the center or ends of the polymer chains. Using infrared bands, unique to the deuterated or hydrogenated sample, the relaxation of ends versus middle of the polymer chain can be monitored. The… CONTINUE READING