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 | 2022-04-05T09:04:10Z | |
dc.date.available | 2020-10-10 | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0896-8446 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5041 | |
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 (∼97–115 °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 °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 scCO2 plasticizing than foaming on PLA crystallinity. Neat and impregnated PLA foams with pores size of 15-200 μm have potential for food packaging, biomedical and insulation applications. | sr |
dc.language.iso | en | sr |
dc.publisher | Elsevier B.V. | sr |
dc.relation | Project FKZ 01PL11082B, funded by a common initiative of the German Federal Government and the individual states of Germany | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45017/RS// | |
dc.relation | German Academic Exchange Service (Project ID: 57140416) | |
dc.relation.isversionof | http://technorep.tmf.bg.ac.rs/handle/123456789/4328 | |
dc.relation.isversionof | https://doi.org/10.1016/j.supflu.2018.10.008 | |
dc.rights | embargoedAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Journal of Supercritical Fluids | sr |
dc.subject | High-pressure DSC | sr |
dc.subject | Polylactic acid | sr |
dc.subject | Supercritical foaming | sr |
dc.subject | Supercritical impregnation | sr |
dc.subject | Thyme extract | sr |
dc.subject | Thymol | sr |
dc.title | Thermal analysis of polylactic acid under high CO2 pressure applied in supercritical impregnation and foaming process design | sr |
dc.type | article | sr |
dc.rights.license | BY-NC-ND | sr |
dc.citation.epage | 80 | |
dc.citation.rank | M21 | |
dc.citation.spage | 71 | |
dc.citation.volume | 144 | |
dc.description.other | Published version: [http://technorep.tmf.bg.ac.rs/handle/123456789/4328] | |
dc.description.other | This is the peer-reviewed version of the following article: Kuska R, Milovanović S, Frerich S, Ivanović J. Thermal analysis of polylactic acid under high CO2 pressure applied in supercritical impregnation and foaming process design. in Journal of Supercritical Fluids. 2019;144:71-80. [https://doi.org/10.1016/j.supflu.2018.10.008] | |
dc.identifier.doi | 10.1016/j.supflu.2018.10.008 | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/8120/Thermal_analysis_of_acc_2018.pdf | |
dc.identifier.scopus | 2-s2.0-85055688745 | |
dc.identifier.wos | 000454371100010 | |
dc.type.version | acceptedVersion | sr |