Optical and mechanical properties of nanofibrillated cellulose: toward a robust platform for next-generation green technologies

Claudia D. Simão (Corresponding Author), Juan S. Reparaz, Markus R. Wagner, Bartlomiej Graczykowski, Martin Kreuzera, Yasser B. Ruiz-Blanco, Yamila García, Jani-Markus Malho, Alejandro R. Goni, Jouni Ahopelto, Clivia M. Sotomayor Torres

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

Nanofibrillated cellulose, a polymer that can be obtained from one of the most abundant biopolymers in Nature, is being increasingly explored due to its outstanding properties for packaging and device applications. Still, open challenges in engineering its intrinsic properties remain to address. To elucidate the optical and mechanical stability of nanofibrillated cellulose as a standalone platform, herein we report on three main findings: i) for the first time an experimental determination of the optical band gap of nanofibrillated cellulose, important for future modelling purposes, based on the onset of the optical band gap of the nanofibrillated cellulose film at Eg~ 275 nm (4.5 eV), obtained using absorption and cathodoluminescence measurements. In addition, comparing this result with ab-initio calculations of the electronic structure the exciton binding energy is estimated to be Eex ~ 800 meV; ii) Hydrostatic pressure experiments revealed that nanofibrillated cellulose is structurally stable at least up to 1.2 GPa; iii) Surface elastic properties with repeatability better than 5% were observed under moisture cycles with changes of the Young modulus as large as 65%. The results obtained show the precise determination of significant properties as elastic properties and interactions that are compared with similar works and, moreover, demonstrate that nanofibrillated cellulose properties can be reversibly controlled, supporting the extended potential of nanofibrillated cellulose as a robust platform for green-technology applications.
Original languageEnglish
Pages (from-to)40-46
JournalCarbohydrate Polymers
Volume126
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Environmental technology
Cellulose
Optical properties
Mechanical properties
Optical band gaps
Cellulose films
Biopolymers
Cathodoluminescence
Mechanical stability
Hydrostatic pressure
Binding energy
Excitons
Electronic structure
Packaging
Polymers
Moisture
Elastic moduli

Keywords

  • nanofibrillated cellulose
  • optical bandgap
  • moisture stability
  • high pressure RAMAN
  • quantitative nanomechanical force microscopy

Cite this

Simão, C. D., Reparaz, J. S., Wagner, M. R., Graczykowski, B., Kreuzera, M., Ruiz-Blanco, Y. B., ... Sotomayor Torres, C. M. (2015). Optical and mechanical properties of nanofibrillated cellulose: toward a robust platform for next-generation green technologies. Carbohydrate Polymers, 126, 40-46. https://doi.org/10.1016/j.carbpol.2015.03.032
Simão, Claudia D. ; Reparaz, Juan S. ; Wagner, Markus R. ; Graczykowski, Bartlomiej ; Kreuzera, Martin ; Ruiz-Blanco, Yasser B. ; García, Yamila ; Malho, Jani-Markus ; Goni, Alejandro R. ; Ahopelto, Jouni ; Sotomayor Torres, Clivia M. / Optical and mechanical properties of nanofibrillated cellulose: toward a robust platform for next-generation green technologies. In: Carbohydrate Polymers. 2015 ; Vol. 126. pp. 40-46.
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abstract = "Nanofibrillated cellulose, a polymer that can be obtained from one of the most abundant biopolymers in Nature, is being increasingly explored due to its outstanding properties for packaging and device applications. Still, open challenges in engineering its intrinsic properties remain to address. To elucidate the optical and mechanical stability of nanofibrillated cellulose as a standalone platform, herein we report on three main findings: i) for the first time an experimental determination of the optical band gap of nanofibrillated cellulose, important for future modelling purposes, based on the onset of the optical band gap of the nanofibrillated cellulose film at Eg~ 275 nm (4.5 eV), obtained using absorption and cathodoluminescence measurements. In addition, comparing this result with ab-initio calculations of the electronic structure the exciton binding energy is estimated to be Eex ~ 800 meV; ii) Hydrostatic pressure experiments revealed that nanofibrillated cellulose is structurally stable at least up to 1.2 GPa; iii) Surface elastic properties with repeatability better than 5{\%} were observed under moisture cycles with changes of the Young modulus as large as 65{\%}. The results obtained show the precise determination of significant properties as elastic properties and interactions that are compared with similar works and, moreover, demonstrate that nanofibrillated cellulose properties can be reversibly controlled, supporting the extended potential of nanofibrillated cellulose as a robust platform for green-technology applications.",
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Simão, CD, Reparaz, JS, Wagner, MR, Graczykowski, B, Kreuzera, M, Ruiz-Blanco, YB, García, Y, Malho, J-M, Goni, AR, Ahopelto, J & Sotomayor Torres, CM 2015, 'Optical and mechanical properties of nanofibrillated cellulose: toward a robust platform for next-generation green technologies', Carbohydrate Polymers, vol. 126, pp. 40-46. https://doi.org/10.1016/j.carbpol.2015.03.032

Optical and mechanical properties of nanofibrillated cellulose: toward a robust platform for next-generation green technologies. / Simão, Claudia D. (Corresponding Author); Reparaz, Juan S.; Wagner, Markus R.; Graczykowski, Bartlomiej; Kreuzera, Martin; Ruiz-Blanco, Yasser B.; García, Yamila; Malho, Jani-Markus; Goni, Alejandro R.; Ahopelto, Jouni; Sotomayor Torres, Clivia M.

In: Carbohydrate Polymers, Vol. 126, 2015, p. 40-46.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Optical and mechanical properties of nanofibrillated cellulose: toward a robust platform for next-generation green technologies

AU - Simão, Claudia D.

AU - Reparaz, Juan S.

AU - Wagner, Markus R.

AU - Graczykowski, Bartlomiej

AU - Kreuzera, Martin

AU - Ruiz-Blanco, Yasser B.

AU - García, Yamila

AU - Malho, Jani-Markus

AU - Goni, Alejandro R.

AU - Ahopelto, Jouni

AU - Sotomayor Torres, Clivia M.

PY - 2015

Y1 - 2015

N2 - Nanofibrillated cellulose, a polymer that can be obtained from one of the most abundant biopolymers in Nature, is being increasingly explored due to its outstanding properties for packaging and device applications. Still, open challenges in engineering its intrinsic properties remain to address. To elucidate the optical and mechanical stability of nanofibrillated cellulose as a standalone platform, herein we report on three main findings: i) for the first time an experimental determination of the optical band gap of nanofibrillated cellulose, important for future modelling purposes, based on the onset of the optical band gap of the nanofibrillated cellulose film at Eg~ 275 nm (4.5 eV), obtained using absorption and cathodoluminescence measurements. In addition, comparing this result with ab-initio calculations of the electronic structure the exciton binding energy is estimated to be Eex ~ 800 meV; ii) Hydrostatic pressure experiments revealed that nanofibrillated cellulose is structurally stable at least up to 1.2 GPa; iii) Surface elastic properties with repeatability better than 5% were observed under moisture cycles with changes of the Young modulus as large as 65%. The results obtained show the precise determination of significant properties as elastic properties and interactions that are compared with similar works and, moreover, demonstrate that nanofibrillated cellulose properties can be reversibly controlled, supporting the extended potential of nanofibrillated cellulose as a robust platform for green-technology applications.

AB - Nanofibrillated cellulose, a polymer that can be obtained from one of the most abundant biopolymers in Nature, is being increasingly explored due to its outstanding properties for packaging and device applications. Still, open challenges in engineering its intrinsic properties remain to address. To elucidate the optical and mechanical stability of nanofibrillated cellulose as a standalone platform, herein we report on three main findings: i) for the first time an experimental determination of the optical band gap of nanofibrillated cellulose, important for future modelling purposes, based on the onset of the optical band gap of the nanofibrillated cellulose film at Eg~ 275 nm (4.5 eV), obtained using absorption and cathodoluminescence measurements. In addition, comparing this result with ab-initio calculations of the electronic structure the exciton binding energy is estimated to be Eex ~ 800 meV; ii) Hydrostatic pressure experiments revealed that nanofibrillated cellulose is structurally stable at least up to 1.2 GPa; iii) Surface elastic properties with repeatability better than 5% were observed under moisture cycles with changes of the Young modulus as large as 65%. The results obtained show the precise determination of significant properties as elastic properties and interactions that are compared with similar works and, moreover, demonstrate that nanofibrillated cellulose properties can be reversibly controlled, supporting the extended potential of nanofibrillated cellulose as a robust platform for green-technology applications.

KW - nanofibrillated cellulose

KW - optical bandgap

KW - moisture stability

KW - high pressure RAMAN

KW - quantitative nanomechanical force microscopy

U2 - 10.1016/j.carbpol.2015.03.032

DO - 10.1016/j.carbpol.2015.03.032

M3 - Article

VL - 126

SP - 40

EP - 46

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

ER -