Alternative modification by grafting in bamboo cellulose nanofibrils : A potential option to improve compatibility and tunable surface energy in bionanocomposites
Copyright © 2022 Elsevier B.V. All rights reserved..
Chemical modification in surface of cellulose nanofibrils CNFs (20 nm) from an endemic and non-significant value-added, Argentine bamboo, was developed. The modification in the CNFs was carried out with three simple routes using a low molecular weight polylactic acid synthesized in our laboratory (PLA1). The first step comprises of protection of the hydroxyl groups of PLA1 through a benzoylation (PLA1Bz). The next step consisted of the activation of carboxyl groups using thionyl chloride and the last reaction was the grafting of the modified PLA onto the CNFs (PLA1Bz-g-CNF). The covalently functionalization is confirmed by spectroscopically techniques as well as PLA1Bz-g-CNFs were characterized by thermal analyses. The PLA1Bz-g-CNFs were taken up such as nanocharges to improve properties of compatibilization and changing surface properties in films based on PLA. The comparison between the films with PLA1Bz-g-CNFs with respect to the physic mixture of the components (PLA1Bz/CNF), shows an improvement in the thermal, mechanical, and surface properties of the material, particularly when 5% of PLA1Bz-g-CNFs was added. The dispersive (γS D) component of film is increased in 36.1 mN/m respect to 29.3 mN/m from the films obtained with the physic mixture nanofibrils without modification and a plasticizing effect was noticed in the final material.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2022 |
|---|---|
| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:211 |
|---|---|
| Enthalten in: |
International journal of biological macromolecules - 211(2022) vom: 30. Juni, Seite 626-638 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Rodríguez-Ramírez, C A [VerfasserIn] |
|---|
| Links: |
|---|
| Anmerkungen: |
Date Completed 08.06.2022 Date Revised 08.06.2022 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1016/j.ijbiomac.2022.05.050 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM340848189 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM340848189 | ||
| 003 | DE-627 | ||
| 005 | 20231226010415.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231226s2022 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.ijbiomac.2022.05.050 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1136.xml |
| 035 | |a (DE-627)NLM340848189 | ||
| 035 | |a (NLM)35561858 | ||
| 035 | |a (PII)S0141-8130(22)01011-X | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Rodríguez-Ramírez, C A |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Alternative modification by grafting in bamboo cellulose nanofibrils |b A potential option to improve compatibility and tunable surface energy in bionanocomposites |
| 264 | 1 | |c 2022 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 08.06.2022 | ||
| 500 | |a Date Revised 08.06.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2022 Elsevier B.V. All rights reserved. | ||
| 520 | |a Chemical modification in surface of cellulose nanofibrils CNFs (20 nm) from an endemic and non-significant value-added, Argentine bamboo, was developed. The modification in the CNFs was carried out with three simple routes using a low molecular weight polylactic acid synthesized in our laboratory (PLA1). The first step comprises of protection of the hydroxyl groups of PLA1 through a benzoylation (PLA1Bz). The next step consisted of the activation of carboxyl groups using thionyl chloride and the last reaction was the grafting of the modified PLA onto the CNFs (PLA1Bz-g-CNF). The covalently functionalization is confirmed by spectroscopically techniques as well as PLA1Bz-g-CNFs were characterized by thermal analyses. The PLA1Bz-g-CNFs were taken up such as nanocharges to improve properties of compatibilization and changing surface properties in films based on PLA. The comparison between the films with PLA1Bz-g-CNFs with respect to the physic mixture of the components (PLA1Bz/CNF), shows an improvement in the thermal, mechanical, and surface properties of the material, particularly when 5% of PLA1Bz-g-CNFs was added. The dispersive (γS D) component of film is increased in 36.1 mN/m respect to 29.3 mN/m from the films obtained with the physic mixture nanofibrils without modification and a plasticizing effect was noticed in the final material | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cellulose Nanofibrils | |
| 650 | 4 | |a Functionalized nanocellulose | |
| 650 | 4 | |a Grafting reaction | |
| 650 | 4 | |a Modification strategy | |
| 650 | 4 | |a NMR characterization | |
| 650 | 4 | |a Nanocomposite films | |
| 650 | 4 | |a Poly (lactic acid) | |
| 650 | 4 | |a Surface compatibilization | |
| 650 | 4 | |a Surface tension | |
| 650 | 7 | |a Polyesters |2 NLM | |
| 650 | 7 | |a Cellulose |2 NLM | |
| 650 | 7 | |a 9004-34-6 |2 NLM | |
| 700 | 1 | |a Dufresne, Alain |e verfasserin |4 aut | |
| 700 | 1 | |a D'Accorso, Norma |e verfasserin |4 aut | |
| 700 | 1 | |a Garcia, Nancy Lis |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t International journal of biological macromolecules |d 1992 |g 211(2022) vom: 30. Juni, Seite 626-638 |w (DE-627)NLM012627356 |x 1879-0003 |7 nnns |
| 773 | 1 | 8 | |g volume:211 |g year:2022 |g day:30 |g month:06 |g pages:626-638 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.ijbiomac.2022.05.050 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 211 |j 2022 |b 30 |c 06 |h 626-638 | ||