Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites
The development of polylactide (PLA)/cellulose nanocrystals (CNC) nanocomposites in the aim to increase gas barrier properties has been widely studied, but gave rise to conflicting results. To better understand the underlying gas transport mechanisms, PLA/CNC nanocomposites were produced at concentr...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Polymer Testing |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0142941822002069 |
| _version_ | 1818158190227881984 |
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| author | Hajar Faraj Nadège Follain Cyrille Sollogoub Giana Almeida Corinne Chappey Stéphane Marais Sylvie Tencé-Girault Fabrice Gouanvé Eliane Espuche Sandra Domenek |
| author_facet | Hajar Faraj Nadège Follain Cyrille Sollogoub Giana Almeida Corinne Chappey Stéphane Marais Sylvie Tencé-Girault Fabrice Gouanvé Eliane Espuche Sandra Domenek |
| author_sort | Hajar Faraj |
| collection | DOAJ |
| description | The development of polylactide (PLA)/cellulose nanocrystals (CNC) nanocomposites in the aim to increase gas barrier properties has been widely studied, but gave rise to conflicting results. To better understand the underlying gas transport mechanisms, PLA/CNC nanocomposites were produced at concentrations between 5 and 50 wt%. The role of the PLA/CNC interface for the permeability was investigated using three different CNC surface grafts, namely lauric acid (slightly interacting with PLA), stearic acid (non-interacting with PLA), and poly glycidyl methacrylate bearing a reactive epoxy end-group (crosslinking with PLA). While PLA/CNC composites contained a large number of aggregates, homogenously dispersed nanocomposites were obtained with surface modified CNCs even at high concentration of CNC (up to 30 wt%). All nanocomposites had better O2 and CO2 barrier properties than PLA. Surprisingly, the nanocomposites prepared with surface grafted CNC did not perform better than the ones prepared with neat CNC. The diffusion coefficient was successfully modeled with Nielsen's law, showing the importance of the shape factor and resulting tortuosity for the barrier performance notwithstanding PLA/CNC surface compatibility. The analysis of the dual-mode O2 sorption isotherm showed the creation of a similar quantity of supplementary sorption sites in nanocomposites prepared with neat or lauric acid grafted CNC. PGMA grafts induced a higher number of sorption sites. The most important advantage of CNC surface grafts was the shielding of CNC against water vapor uptake. As a result, the O2 barrier properties could be maintained constant up to 90% relative humidity. |
| first_indexed | 2024-12-11T15:26:09Z |
| format | Article |
| id | doaj.art-ce169ef3c2524d8488f743b0af174a17 |
| institution | Directory Open Access Journal |
| issn | 0142-9418 |
| language | English |
| last_indexed | 2024-12-11T15:26:09Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Polymer Testing |
| spelling | doaj.art-ce169ef3c2524d8488f743b0af174a172022-12-22T01:00:13ZengElsevierPolymer Testing0142-94182022-09-01113107683Gas barrier properties of polylactide/cellulose nanocrystals nanocompositesHajar Faraj0Nadège Follain1Cyrille Sollogoub2Giana Almeida3Corinne Chappey4Stéphane Marais5Sylvie Tencé-Girault6Fabrice Gouanvé7Eliane Espuche8Sandra Domenek9Université Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, 91300, Massy, France; Laboratoire PIMM, Arts et Metiers Instiute of Technology, CNRS, Cnam, Hesam Universite, 151, Boulevard de l’Hopital, 75013, Paris, FranceNormandie University, UNIROUEN, INSA Rouen, CNRS, PBS, 76000, Rouen, FranceLaboratoire PIMM, Arts et Metiers Instiute of Technology, CNRS, Cnam, Hesam Universite, 151, Boulevard de l’Hopital, 75013, Paris, FranceUniversité Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, 91300, Massy, FranceNormandie University, UNIROUEN, INSA Rouen, CNRS, PBS, 76000, Rouen, FranceNormandie University, UNIROUEN, INSA Rouen, CNRS, PBS, 76000, Rouen, FranceLaboratoire PIMM, Arts et Metiers Instiute of Technology, CNRS, Cnam, Hesam Universite, 151, Boulevard de l’Hopital, 75013, Paris, FranceUniversité Lyon 1, CNRS UMR 5223, Ingénierie des Matériaux Polymères, 69622, Villeurbanne, FranceUniversité Lyon 1, CNRS UMR 5223, Ingénierie des Matériaux Polymères, 69622, Villeurbanne, FranceUniversité Paris-Saclay, INRAE, AgroParisTech, UMR SayFood, 91300, Massy, France; Corresponding author. UMR SayFood, 91300, Massy, France.The development of polylactide (PLA)/cellulose nanocrystals (CNC) nanocomposites in the aim to increase gas barrier properties has been widely studied, but gave rise to conflicting results. To better understand the underlying gas transport mechanisms, PLA/CNC nanocomposites were produced at concentrations between 5 and 50 wt%. The role of the PLA/CNC interface for the permeability was investigated using three different CNC surface grafts, namely lauric acid (slightly interacting with PLA), stearic acid (non-interacting with PLA), and poly glycidyl methacrylate bearing a reactive epoxy end-group (crosslinking with PLA). While PLA/CNC composites contained a large number of aggregates, homogenously dispersed nanocomposites were obtained with surface modified CNCs even at high concentration of CNC (up to 30 wt%). All nanocomposites had better O2 and CO2 barrier properties than PLA. Surprisingly, the nanocomposites prepared with surface grafted CNC did not perform better than the ones prepared with neat CNC. The diffusion coefficient was successfully modeled with Nielsen's law, showing the importance of the shape factor and resulting tortuosity for the barrier performance notwithstanding PLA/CNC surface compatibility. The analysis of the dual-mode O2 sorption isotherm showed the creation of a similar quantity of supplementary sorption sites in nanocomposites prepared with neat or lauric acid grafted CNC. PGMA grafts induced a higher number of sorption sites. The most important advantage of CNC surface grafts was the shielding of CNC against water vapor uptake. As a result, the O2 barrier properties could be maintained constant up to 90% relative humidity.http://www.sciencedirect.com/science/article/pii/S0142941822002069PLACNCNanocompositesGas barrier propertiesNielsen modelBiocomposites |
| spellingShingle | Hajar Faraj Nadège Follain Cyrille Sollogoub Giana Almeida Corinne Chappey Stéphane Marais Sylvie Tencé-Girault Fabrice Gouanvé Eliane Espuche Sandra Domenek Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites Polymer Testing PLA CNC Nanocomposites Gas barrier properties Nielsen model Biocomposites |
| title | Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites |
| title_full | Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites |
| title_fullStr | Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites |
| title_full_unstemmed | Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites |
| title_short | Gas barrier properties of polylactide/cellulose nanocrystals nanocomposites |
| title_sort | gas barrier properties of polylactide cellulose nanocrystals nanocomposites |
| topic | PLA CNC Nanocomposites Gas barrier properties Nielsen model Biocomposites |
| url | http://www.sciencedirect.com/science/article/pii/S0142941822002069 |
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