 |
 |
Conference papers
A newly designed experiment for high-pressure solidification of transparent materials
Abstract : The growth kinetics of a polymer spherulite is function of temperature and pressure. While the link with temperature is well understood, little comprehensive study has been conducted to quantify the effect of pressure. This is yet required for polymer processing. An original experiment has been constructed for pressure and temperature controls up to 200 MPa and 300°C, respectively. The cell design takes advantage from the optical properties of the semi-crystalline spherulites to conduct in-situ real time light depolarizing microscopic observations. Preliminary analyses of isothermal isobaric holding of a model polymer shows the influence of temperature and pressure on nucleation and growth kinetics of spherulites, as well as on the crystallization morphology. Simple modeling dealing with the Avrami equation and the Hoffman and Lauritzen theory is introduced.
https://hal-mines-paristech.archives-ouvertes.fr/hal-00820945
Contributor : Magalie Prudon Connect in order to contact the contributor
Submitted on : Tuesday, May 7, 2013 - 9:27:44 AM
Last modification on : Wednesday, November 17, 2021 - 12:28:05 PM
Contributor : Magalie Prudon Connect in order to contact the contributor
Submitted on : Tuesday, May 7, 2013 - 9:27:44 AM
Last modification on : Wednesday, November 17, 2021 - 12:28:05 PM