Приказ основних података о документу
Thermal analysis of polylactic acid under high CO2 pressure applied in supercritical impregnation and foaming process design
dc.creator | Kuska, Robert | |
dc.creator | Milovanović, Stoja | |
dc.creator | Frerich, Sulamith | |
dc.creator | Ivanović, Jasna | |
dc.date.accessioned | 2021-03-10T14:11:55Z | |
dc.date.available | 2021-03-10T14:11:55Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0896-8446 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4328 | |
dc.description.abstract | Thermal properties of extrusion and injection grade polylactic acid (PLA) were analysed using high pressure differential scanning calorimetry (HP-DSC) under CO2 pressures of up to 50 MPa. The greatest depression of melting point and degree of crystallinity of the samples occurred at 20-30 MPa (similar to 97-115 degrees C). Batch and semi continuous processes for supercritical foaming and impregnation of PLA with thymol or thyme extract were performed at 30 MPa and 100-110 degrees C to prevent thymol degradation, decrease heating requirements and ease polymer processing. At these conditions, PLA foams containing 5.6% or 1.1% of thymol and 0.7% of thyme extract were obtained using static or dynamic batch impregnation and semi-continuous extraction-impregnation process for 7 h, respectively. DSC and HP-DSC analyses revealed more pronounced effect of scCO(2) plasticizing than foaming on PLA crystallinity. Neat and impregnated PLA foams with pores size of 15-200 pm have potential for food packaging, biomedical and insulation applications. | en |
dc.publisher | Elsevier Science Bv, Amsterdam | |
dc.relation | German Federal Ministry of Education and Research- BMBFFederal Ministry of Education & Research (BMBF) [FKZ 01PL11082B] | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45017/RS// | |
dc.relation | German Academic Exchange serviceDeutscher Akademischer Austausch Dienst (DAAD) [57140416] | |
dc.relation.isversionof | http://technorep.tmf.bg.ac.rs/handle/123456789/5041 | |
dc.rights | restrictedAccess | |
dc.source | Journal of Supercritical Fluids | |
dc.subject | High-pressure DSC | en |
dc.subject | Polylactic acid | en |
dc.subject | Supercritical impregnation | en |
dc.subject | Supercritical foaming | en |
dc.subject | Thymol | en |
dc.subject | Thyme extract | en |
dc.title | Thermal analysis of polylactic acid under high CO2 pressure applied in supercritical impregnation and foaming process design | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 80 | |
dc.citation.other | 144: 71-80 | |
dc.citation.rank | M21 | |
dc.citation.spage | 71 | |
dc.citation.volume | 144 | |
dc.description.other | Peer reviewed manuscript: [http://technorep.tmf.bg.ac.rs/handle/123456789/5041] | |
dc.identifier.doi | 10.1016/j.supflu.2018.10.008 | |
dc.identifier.scopus | 2-s2.0-85055688745 | |
dc.identifier.wos | 000454371100010 | |
dc.type.version | publishedVersion |