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Glass transition of PLA-CO₂ mixtures after solid-state saturation

Title data

Brütting, Christian ; Dreier, Julia ; Bonten, Christian ; Altstädt, Volker ; Ruckdäschel, Holger:
Glass transition of PLA-CO₂ mixtures after solid-state saturation.
In: Journal of Cellular Plastics. Vol. 58 (2022) Issue 6 . - pp. 917-931.
ISSN 1530-7999

Official URL: Volltext

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Polymer foams offer high sustainable performance in terms of their lightweight potential, insulation and high specific mechanical properties. The foaming of polymers depends on the properties of gas-laden solids or liquids. For foaming in the solid state, the foaming temperature must be higher than the glass transition temperature of the saturated polymer system. Moreover, the knowledge of sorption conditions and thermal properties is crucial for foam formation. In this study, the correlation between the glass transition temperature and the sorption conditions was investigated. This comparison was made by determining the sorption behavior for different pressure levels and the corresponding glass transition temperature using a high-pressure differential scanning calorimetry. The time, pressure and CO₂ content were varied. For the first time, the Chow model could be verified for PLA with a coordination number of 3.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: High pressure differential scanning calorimetry; glass transition temperature; chow model; CO₂; Tg depression
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Polymer Materials > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Polymer Materials
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 24 Jun 2023 21:01
Last Modified: 26 Jun 2023 09:34