The phenomenon of flow‐induced crystallization was investigated using a linear polyethylene above its normal melting point flowing continuously in a Biconical Rheometer. It was found that the resin crystallized in the superheated state at rates which increased with increasing shear rate and decreasing temperature. A method of analysis of the temperature dependence of the various stages of flow induced crystallization is proposed. It deals with and attempts to explain the experimental fact that a higher viscosity enhances the rate of flow‐induced crystallization in contrast to the effect of viscosity on the rate of quiescent crystallization. Some of the flow‐induced crystallization samples were transparent and exhibited a high DSC thermogram “tail”.
All Science Journal Classification (ASJC) codes
- Materials Chemistry
- Polymers and Plastics