English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

On-line uniaxial deformation behavior and deformation induced crystallization characteristics of initially amorphous syndiotactic polystyrene (s-PS) sheets were studied using an Iwamoto biaxial stretcher operated in the uniaxial mode. The stress strain curves obtained under various conditions indicate that this polymer can be stretched uniformly at 110°C which is between its glass transition temperature and cold crystallization temperature. The principal refractive indices were determined as a function of deformation conditions. Because of the negative intrinsic birefringence in the s-PS polymer chains the refractive indices in stretching direction decrease and those in the transverse direction increase with deformation.

international polymer processing

Optical Properties and Orientation Development in Uniaxially Stretched Syndiotactic Polystyrene from Amorphous Precursors: On-line Deformation Behavior