Swelling kinetics and impregnation of PLA with thymol under supercritical CO2 conditions
Kinetika bubrenja PLA i njegova impregnacija timolom upotrebom natkritičnog uglenik(IV)-oksida
Authors
Milovanović, StojaKuska, Robert
Lučić-Škorić, Marija
Kalagasidis Krušić, Melina
Frerich, Sulamith
Žižović, Irena
Ivanović, Jasna
Article (Published version)
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Show full item recordAbstract
The present work was aimed to study swelling kinetics of polylactic acid (PLA) and its impregnation with thymol in supercritical carbon dioxide (scCO2) medium. The influences of temperature and soaking time on the swelling kinetics and impregnation yield of PLA cylindrical disc and film were investigated. Swelling experiments were performed in a high pressure view cell at 10 MPa and temperatures of 40°C, 60°C and 75°C for 2 to 24 h. On the basis of swelling kinetics, pressure of 10 MPa and temperature of 40°C were chosen for supercritical solvent impregnation (SSI) of the PLA samples during 2 to24 h. The highest swelling extent was observed for the PLA monolith after 24 h treatment with pure scCO2 (7.5%) and scCO2 with thymol (118.3%). It was shown that sufficiently high amount of thymol can be loaded into both PLA monolith and film using SSI after only 2 h (10.0% and 6.6%, respectively). Monolith and film of PLA impregnated with thymol could be suitable for active food packaging and s...terile medical disposables.
Prikazana studija je namenjena ispitivanju kinetike bubrenja polilaktida (PLA) i njegovoj impregnaciji timolom u natkritičnom ugljenik(IV)-oksidu (nkCO2). Praćen je uticaj temperature i operativnog vremena na kinetiku bubrenja i prinos impregnacije PLA cilindričnog diska i filma. Eksperimenti bubrenja su izvedeni u ćeliji za rad pod visokim pritiscima na 10 MPa and 40°C, 60°C i 75°C od 2 h do 24 h. Na osnovu kinetike bubrenja, natkritična impregnacija uzoraka PLA timolom je izvedena na pritisku od 10 MPa i temperaturi od 40°C tokom 2 do 24 h. Najveći stepen bubrenja je imao PLA disk na 10 MPa i 40°C nakon 24 h (7,5%) u sistemu sa čistim nkCO2 i u sistemu sa timolom (118,3%). Pokazano je da se dovoljno visok prinos impregnacije timola može postići nakon 2 h (10,0% za disk i 6,6% za film). PLA u formi diska i filma impregnirani timolom su pogodni materijali za aktivno pakovanje hrane i za sterilni medicinski pribor.
Keywords:
carbon dioxide / PLA / supercritical impregnation / swelling / thymol / ugljen(IV)-oksid / PLA / natkritična impregnacija / bubrenje / timolSource:
Tehnika, 2016, 71, 1, 16-20Publisher:
- Savez inženjera i tehničara Srbije, Beograd
Funding / projects:
- Functional physiologically active plant materials with additional values for application in pharmaceutical and food industry (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45017)
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-MESTD-Basic Research (BR or ON)-172062)
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Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Milovanović, Stoja AU - Kuska, Robert AU - Lučić-Škorić, Marija AU - Kalagasidis Krušić, Melina AU - Frerich, Sulamith AU - Žižović, Irena AU - Ivanović, Jasna PY - 2016 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3219 AB - The present work was aimed to study swelling kinetics of polylactic acid (PLA) and its impregnation with thymol in supercritical carbon dioxide (scCO2) medium. The influences of temperature and soaking time on the swelling kinetics and impregnation yield of PLA cylindrical disc and film were investigated. Swelling experiments were performed in a high pressure view cell at 10 MPa and temperatures of 40°C, 60°C and 75°C for 2 to 24 h. On the basis of swelling kinetics, pressure of 10 MPa and temperature of 40°C were chosen for supercritical solvent impregnation (SSI) of the PLA samples during 2 to24 h. The highest swelling extent was observed for the PLA monolith after 24 h treatment with pure scCO2 (7.5%) and scCO2 with thymol (118.3%). It was shown that sufficiently high amount of thymol can be loaded into both PLA monolith and film using SSI after only 2 h (10.0% and 6.6%, respectively). Monolith and film of PLA impregnated with thymol could be suitable for active food packaging and sterile medical disposables. AB - Prikazana studija je namenjena ispitivanju kinetike bubrenja polilaktida (PLA) i njegovoj impregnaciji timolom u natkritičnom ugljenik(IV)-oksidu (nkCO2). Praćen je uticaj temperature i operativnog vremena na kinetiku bubrenja i prinos impregnacije PLA cilindričnog diska i filma. Eksperimenti bubrenja su izvedeni u ćeliji za rad pod visokim pritiscima na 10 MPa and 40°C, 60°C i 75°C od 2 h do 24 h. Na osnovu kinetike bubrenja, natkritična impregnacija uzoraka PLA timolom je izvedena na pritisku od 10 MPa i temperaturi od 40°C tokom 2 do 24 h. Najveći stepen bubrenja je imao PLA disk na 10 MPa i 40°C nakon 24 h (7,5%) u sistemu sa čistim nkCO2 i u sistemu sa timolom (118,3%). Pokazano je da se dovoljno visok prinos impregnacije timola može postići nakon 2 h (10,0% za disk i 6,6% za film). PLA u formi diska i filma impregnirani timolom su pogodni materijali za aktivno pakovanje hrane i za sterilni medicinski pribor. PB - Savez inženjera i tehničara Srbije, Beograd T2 - Tehnika T1 - Swelling kinetics and impregnation of PLA with thymol under supercritical CO2 conditions T1 - Kinetika bubrenja PLA i njegova impregnacija timolom upotrebom natkritičnog uglenik(IV)-oksida EP - 20 IS - 1 SP - 16 VL - 71 DO - 10.5937/tehnika1601016M ER -
@article{ author = "Milovanović, Stoja and Kuska, Robert and Lučić-Škorić, Marija and Kalagasidis Krušić, Melina and Frerich, Sulamith and Žižović, Irena and Ivanović, Jasna", year = "2016", abstract = "The present work was aimed to study swelling kinetics of polylactic acid (PLA) and its impregnation with thymol in supercritical carbon dioxide (scCO2) medium. The influences of temperature and soaking time on the swelling kinetics and impregnation yield of PLA cylindrical disc and film were investigated. Swelling experiments were performed in a high pressure view cell at 10 MPa and temperatures of 40°C, 60°C and 75°C for 2 to 24 h. On the basis of swelling kinetics, pressure of 10 MPa and temperature of 40°C were chosen for supercritical solvent impregnation (SSI) of the PLA samples during 2 to24 h. The highest swelling extent was observed for the PLA monolith after 24 h treatment with pure scCO2 (7.5%) and scCO2 with thymol (118.3%). It was shown that sufficiently high amount of thymol can be loaded into both PLA monolith and film using SSI after only 2 h (10.0% and 6.6%, respectively). Monolith and film of PLA impregnated with thymol could be suitable for active food packaging and sterile medical disposables., Prikazana studija je namenjena ispitivanju kinetike bubrenja polilaktida (PLA) i njegovoj impregnaciji timolom u natkritičnom ugljenik(IV)-oksidu (nkCO2). Praćen je uticaj temperature i operativnog vremena na kinetiku bubrenja i prinos impregnacije PLA cilindričnog diska i filma. Eksperimenti bubrenja su izvedeni u ćeliji za rad pod visokim pritiscima na 10 MPa and 40°C, 60°C i 75°C od 2 h do 24 h. Na osnovu kinetike bubrenja, natkritična impregnacija uzoraka PLA timolom je izvedena na pritisku od 10 MPa i temperaturi od 40°C tokom 2 do 24 h. Najveći stepen bubrenja je imao PLA disk na 10 MPa i 40°C nakon 24 h (7,5%) u sistemu sa čistim nkCO2 i u sistemu sa timolom (118,3%). Pokazano je da se dovoljno visok prinos impregnacije timola može postići nakon 2 h (10,0% za disk i 6,6% za film). PLA u formi diska i filma impregnirani timolom su pogodni materijali za aktivno pakovanje hrane i za sterilni medicinski pribor.", publisher = "Savez inženjera i tehničara Srbije, Beograd", journal = "Tehnika", title = "Swelling kinetics and impregnation of PLA with thymol under supercritical CO2 conditions, Kinetika bubrenja PLA i njegova impregnacija timolom upotrebom natkritičnog uglenik(IV)-oksida", pages = "20-16", number = "1", volume = "71", doi = "10.5937/tehnika1601016M" }
Milovanović, S., Kuska, R., Lučić-Škorić, M., Kalagasidis Krušić, M., Frerich, S., Žižović, I.,& Ivanović, J.. (2016). Swelling kinetics and impregnation of PLA with thymol under supercritical CO2 conditions. in Tehnika Savez inženjera i tehničara Srbije, Beograd., 71(1), 16-20. https://doi.org/10.5937/tehnika1601016M
Milovanović S, Kuska R, Lučić-Škorić M, Kalagasidis Krušić M, Frerich S, Žižović I, Ivanović J. Swelling kinetics and impregnation of PLA with thymol under supercritical CO2 conditions. in Tehnika. 2016;71(1):16-20. doi:10.5937/tehnika1601016M .
Milovanović, Stoja, Kuska, Robert, Lučić-Škorić, Marija, Kalagasidis Krušić, Melina, Frerich, Sulamith, Žižović, Irena, Ivanović, Jasna, "Swelling kinetics and impregnation of PLA with thymol under supercritical CO2 conditions" in Tehnika, 71, no. 1 (2016):16-20, https://doi.org/10.5937/tehnika1601016M . .