Abstract
This paper investigated the condensed state structure evolution of pre-crystallized polylactide (PLA) under supercritical CO2 (scCO2) and its influence on the foaming behavior of PLA. An interesting phenomenon was found, in which the pre-crystallized PLA can form a layered condensed state structure with a molten skin layer and a crystalline core at low temperatures under scCO2, and as the temperature increases, the width of the molten skin layer and the melting degree of the core gradually increases until a uniform non-layered molten state structure is formed. On this basis, layered and non-layered PLA foams were prepared at low and high temperatures, respectively. For the non-layered PLA foam, the skin layer and the core show similar closed or opened cell structure, where the open-cell PLA foams exhibit excellent oil-sorption properties. This paper provides a solvent-free idea for the green fabrication of bio-based and biodegradable oil-sorption foam.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
