Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer
Amphiphilic copolymers were synthesized by grafting poly(lactic-co-glycolic) acid with two lignin types: alkaline lignin and lignosulfonate. An interphase formation technique was used to produce films based on the copolymers. Films presented one side as being more hydrophobic (O-side) and smoother,...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
North Carolina State University
2023-07-01
|
| Series: | BioResources |
| Subjects: | |
| Online Access: | https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22574 |
| _version_ | 1797768593833721856 |
|---|---|
| author | Omar E. Mendez Carlos E. Astete Soňa Hermanová Dorin Boldor William Orts Cristina M. Sabliov |
| author_facet | Omar E. Mendez Carlos E. Astete Soňa Hermanová Dorin Boldor William Orts Cristina M. Sabliov |
| author_sort | Omar E. Mendez |
| collection | DOAJ |
| description | Amphiphilic copolymers were synthesized by grafting poly(lactic-co-glycolic) acid with two lignin types: alkaline lignin and lignosulfonate. An interphase formation technique was used to produce films based on the copolymers. Films presented one side as being more hydrophobic (O-side) and smoother, and the second side more polar and with an uneven surface (W-side). Contact angle of water on the W-side was lower than the O-side corresponding to a higher lignin content and influenced by the lignin type (alkaline < lignosulfonate) and lignin: PLGA ratio. X-ray photoelectric spectroscopy analysis showed higher percentages of sulfur on the W-side, which supports a preferential partitioning of the lignin. Tensile testing demonstrated the significant impact of lignin type on the mechanical properties of the films. Alkaline films showed a higher maximum strength, a higher stiffness, and a higher tensile strength at the elastic limit compared to lignosulfonate films. However, for lignosulfonate films, ductility at break point was 4-fold higher than that of alkaline films. |
| first_indexed | 2024-03-12T20:55:37Z |
| format | Article |
| id | doaj.art-f1d122344ccb4b81b2384883dbc6ceef |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-03-12T20:55:37Z |
| publishDate | 2023-07-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-f1d122344ccb4b81b2384883dbc6ceef2023-07-31T18:02:54ZengNorth Carolina State UniversityBioResources1930-21262023-07-0118358875907601Biobased Films from Amphiphilic Lignin-Graft-PLGA CopolymerOmar E. Mendez0Carlos E. Astete1Soňa Hermanová2https://orcid.org/0000-0002-9491-9100Dorin Boldor3William Orts4Cristina M. Sabliov5https://orcid.org/0000-0002-6992-8304Biological & Agricultural Engineering, Louisiana State University and LSU Ag Center, Baton Rouge, LA, USABiological & Agricultural Engineering, Louisiana State University and LSU Ag Center, Baton Rouge, LA, USAFaculty of AgriSciences, Mendel University in Brno, Brno, CzechiaBiological & Agricultural Engineering, Louisiana State University and LSU Ag Center, Baton Rouge, LA, USAUSDA, Agricultural Research Service, Western Regional Research Center, Beltsville, MD, USABiological & Agricultural Engineering, Louisiana State University and LSU Ag Center, Baton Rouge, LA, USAAmphiphilic copolymers were synthesized by grafting poly(lactic-co-glycolic) acid with two lignin types: alkaline lignin and lignosulfonate. An interphase formation technique was used to produce films based on the copolymers. Films presented one side as being more hydrophobic (O-side) and smoother, and the second side more polar and with an uneven surface (W-side). Contact angle of water on the W-side was lower than the O-side corresponding to a higher lignin content and influenced by the lignin type (alkaline < lignosulfonate) and lignin: PLGA ratio. X-ray photoelectric spectroscopy analysis showed higher percentages of sulfur on the W-side, which supports a preferential partitioning of the lignin. Tensile testing demonstrated the significant impact of lignin type on the mechanical properties of the films. Alkaline films showed a higher maximum strength, a higher stiffness, and a higher tensile strength at the elastic limit compared to lignosulfonate films. However, for lignosulfonate films, ductility at break point was 4-fold higher than that of alkaline films.https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22574ligninampiphilicbiodegradable filmx-ray photoelectron spectroscopy (xps)contact angle |
| spellingShingle | Omar E. Mendez Carlos E. Astete Soňa Hermanová Dorin Boldor William Orts Cristina M. Sabliov Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer BioResources lignin ampiphilic biodegradable film x-ray photoelectron spectroscopy (xps) contact angle |
| title | Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer |
| title_full | Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer |
| title_fullStr | Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer |
| title_full_unstemmed | Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer |
| title_short | Biobased Films from Amphiphilic Lignin-Graft-PLGA Copolymer |
| title_sort | biobased films from amphiphilic lignin graft plga copolymer |
| topic | lignin ampiphilic biodegradable film x-ray photoelectron spectroscopy (xps) contact angle |
| url | https://ojs.cnr.ncsu.edu/index.php/BRJ/article/view/22574 |
| work_keys_str_mv | AT omaremendez biobasedfilmsfromamphiphilicligningraftplgacopolymer AT carloseastete biobasedfilmsfromamphiphilicligningraftplgacopolymer AT sonahermanova biobasedfilmsfromamphiphilicligningraftplgacopolymer AT dorinboldor biobasedfilmsfromamphiphilicligningraftplgacopolymer AT williamorts biobasedfilmsfromamphiphilicligningraftplgacopolymer AT cristinamsabliov biobasedfilmsfromamphiphilicligningraftplgacopolymer |