Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties
Bionanocomposites based on Polylactide (PLA) and Polyhydroxybutyrate (PHB) blends were successfully obtained through a combined extrusion and impregnation process using supercritical CO<sub>2</sub> (scCO<sub>2</sub>). Graphene oxide (GO) and cinnamaldehyde (Ci) were incorpora...
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MDPI AG
2021
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oai:doaj.org-article:f8f0f9ec443c446287f7f6c5dfe1848b2021-11-25T18:48:51ZObtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties10.3390/polym132239682073-4360https://doaj.org/article/f8f0f9ec443c446287f7f6c5dfe1848b2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3968https://doaj.org/toc/2073-4360Bionanocomposites based on Polylactide (PLA) and Polyhydroxybutyrate (PHB) blends were successfully obtained through a combined extrusion and impregnation process using supercritical CO<sub>2</sub> (scCO<sub>2</sub>). Graphene oxide (GO) and cinnamaldehyde (Ci) were incorporated into the blends as nano-reinforcement and an active compound, respectively, separately, and simultaneously. From the results, cinnamaldehyde quantification values varied between 5.7% and 6.1% (<i>w</i>/<i>w</i>). When GO and Ci were incorporated, elongation percentage increased up to 16%, and, therefore, the mechanical properties were improved, with respect to neat PLA. The results indicated that the Ci diffusion through the blends and bionanocomposites was influenced by the nano-reinforcing incorporation. The disintegration capacity of the developed materials decreased with the incorporation of GO and PHB, up to 14 and 23 days of testing, respectively, without compromising the biodegradability characteristics of the final material.Carolina VillegasAlejandra TorresJulio BrunaMaría Ignacia BustosAlvaro Díaz-BarreraJulio RomeroAdrián RojasAbel GuardaMDPI AGarticlePLA/PHB blendbionanocompositesgraphene oxidenano-reinforcementrelease kineticOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3968, p 3968 (2021) |
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DOAJ |
| language |
EN |
| topic |
PLA/PHB blend bionanocomposites graphene oxide nano-reinforcement release kinetic Organic chemistry QD241-441 |
| spellingShingle |
PLA/PHB blend bionanocomposites graphene oxide nano-reinforcement release kinetic Organic chemistry QD241-441 Carolina Villegas Alejandra Torres Julio Bruna María Ignacia Bustos Alvaro Díaz-Barrera Julio Romero Adrián Rojas Abel Guarda Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties |
| description |
Bionanocomposites based on Polylactide (PLA) and Polyhydroxybutyrate (PHB) blends were successfully obtained through a combined extrusion and impregnation process using supercritical CO<sub>2</sub> (scCO<sub>2</sub>). Graphene oxide (GO) and cinnamaldehyde (Ci) were incorporated into the blends as nano-reinforcement and an active compound, respectively, separately, and simultaneously. From the results, cinnamaldehyde quantification values varied between 5.7% and 6.1% (<i>w</i>/<i>w</i>). When GO and Ci were incorporated, elongation percentage increased up to 16%, and, therefore, the mechanical properties were improved, with respect to neat PLA. The results indicated that the Ci diffusion through the blends and bionanocomposites was influenced by the nano-reinforcing incorporation. The disintegration capacity of the developed materials decreased with the incorporation of GO and PHB, up to 14 and 23 days of testing, respectively, without compromising the biodegradability characteristics of the final material. |
| format |
article |
| author |
Carolina Villegas Alejandra Torres Julio Bruna María Ignacia Bustos Alvaro Díaz-Barrera Julio Romero Adrián Rojas Abel Guarda |
| author_facet |
Carolina Villegas Alejandra Torres Julio Bruna María Ignacia Bustos Alvaro Díaz-Barrera Julio Romero Adrián Rojas Abel Guarda |
| author_sort |
Carolina Villegas |
| title |
Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties |
| title_short |
Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties |
| title_full |
Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties |
| title_fullStr |
Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties |
| title_full_unstemmed |
Obtaining Active Polylactide (PLA) and Polyhydroxybutyrate (PHB) Blends Based Bionanocomposites Modified with Graphene Oxide and Supercritical Carbon Dioxide (scCO<sub>2</sub>)-Assisted Cinnamaldehyde: Effect on Thermal-Mechanical, Disintegration and Mass Transport Properties |
| title_sort |
obtaining active polylactide (pla) and polyhydroxybutyrate (phb) blends based bionanocomposites modified with graphene oxide and supercritical carbon dioxide (scco<sub>2</sub>)-assisted cinnamaldehyde: effect on thermal-mechanical, disintegration and mass transport properties |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/f8f0f9ec443c446287f7f6c5dfe1848b |
| work_keys_str_mv |
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| _version_ |
1718410689539735552 |