Back to Search
Start Over
Flow distribution in shear-induced crystallisation of melt polymer: A prediction from morphological distribution of solid polymer
- Source :
-
Polymer . May2012, Vol. 53 Issue 11, p2274-2282. 9p. - Publication Year :
- 2012
-
Abstract
- Abstract: The present study presents a method to predict the flow distribution imposed on an injection moulded melt crystallised isotactic polypropylene (iPP) from its experimentally determined morphological distribution. A microrheological model, based on the Doi–Edwards model, was used to calculate the flow-induced free energy for the flow-induced crystallisation. The low limit flow field required to generate the final structures was then obtained. The effect of Cu-phthalocyanine (CuPc), a nucleating agent, on the flow history was also studied. Instead of geometric positions, structural parameters such as molecular orientation and crystallinity were correlated to the flow history of the injection-moulded iPP. The work provides a simple approach to predict flow–structure relationships for complex thermo-mechanical processing treatments, which can then guide the realistic design and control of the flow-induced crystallisation of polymers. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00323861
- Volume :
- 53
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Polymer
- Publication Type :
- Academic Journal
- Accession number :
- 74664031
- Full Text :
- https://doi.org/10.1016/j.polymer.2012.03.047