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Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties

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Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties. / Quero, Franck; Coveney, Abigail ; Anna E., Lewandowska,; Richardson, Robert M; P, Diaz-Calderon; Lee, Koo-Yang; Eichhorn, Stephen J.; Alam, M A; Enrione, Javier.

In: Biomacromolecules, Vol. 16, No. 6, 08.06.2015, p. 1784-1793.

Research output: Contribution to journalArticle

Harvard

Quero, F, Coveney, A, Anna E., L, Richardson, RM, P, D-C, Lee, K-Y, Eichhorn, SJ, Alam, MA & Enrione, J 2015, 'Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties', Biomacromolecules, vol. 16, no. 6, pp. 1784-1793. https://doi.org/10.1021/acs.biomac.5b00345

APA

Quero, F., Coveney, A., Anna E., L., Richardson, R. M., P, D-C., Lee, K-Y., ... Enrione, J. (2015). Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties. Biomacromolecules, 16(6), 1784-1793. https://doi.org/10.1021/acs.biomac.5b00345

Vancouver

Author

Quero, Franck ; Coveney, Abigail ; Anna E., Lewandowska, ; Richardson, Robert M ; P, Diaz-Calderon ; Lee, Koo-Yang ; Eichhorn, Stephen J. ; Alam, M A ; Enrione, Javier. / Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties. In: Biomacromolecules. 2015 ; Vol. 16, No. 6. pp. 1784-1793.

Bibtex

@article{c4f76fe1afb94e78bdb1b45363101178,
title = "Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties",
abstract = "This work reports on the preparation and characterization of natural composite materials prepared from bacterial cellulose (BC) incorporated into a gelatin matrix. Composite morphology was studied using scanning electron microscopy and 2D Raman imaging revealing an inhomogeneous dispersion of BC within the gelatin matrix. The composite materials showed controllable degrees of transparency to visible light and opacity to UV light depending on BC weight fraction. By adding a 10 wt {\%} fraction of BC in gelatin, visible (= 550 nm) and UV (= 350 nm) transmittances were found to decrease by ∼35 and 40{\%}, respectively. Additionally, stress transfer occurring between the gelatin and BC fibrils was quantified using Raman spectroscopy. This is the first report for a gelatin-matrix composite containing cellulose. As a function of strain, two distinct domains, both showing linear relationships, were observed for which an average initial shift rate with respect to strain of -0.63 ± 0.2 cm-1{\%}-1 was observed, followed by an average shift rate of -0.25 ± 0.03 cm-1{\%}-1. The average initial Raman band shift rate value corresponds to an average effective Young's modulus of 39 ± 13 GPa and 73 ± 25 GPa, respectively, for either a 2D and 3D network of BC fibrils embedded in the gelatin matrix. As a function of stress, a linear relationship was observed with a Raman band shift rate of -27 ± 3 cm-1GPa-1. The potential use of these composite materials as a UV blocking food coating is discussed.",
author = "Franck Quero and Abigail Coveney and {Anna E.}, Lewandowska, and Richardson, {Robert M} and Diaz-Calderon P and Koo-Yang Lee and Eichhorn, {Stephen J.} and Alam, {M A} and Javier Enrione",
year = "2015",
month = "6",
day = "8",
doi = "10.1021/acs.biomac.5b00345",
language = "English",
volume = "16",
pages = "1784--1793",
journal = "Biomacromolecules",
issn = "1525-7797",
publisher = "American Chemical Society",
number = "6",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Stress Transfer Quantification in Gelatin-Matrix Natural Composites with Tunable Optical Properties

AU - Quero, Franck

AU - Coveney, Abigail

AU - Anna E., Lewandowska,

AU - Richardson, Robert M

AU - P, Diaz-Calderon

AU - Lee, Koo-Yang

AU - Eichhorn, Stephen J.

AU - Alam, M A

AU - Enrione, Javier

PY - 2015/6/8

Y1 - 2015/6/8

N2 - This work reports on the preparation and characterization of natural composite materials prepared from bacterial cellulose (BC) incorporated into a gelatin matrix. Composite morphology was studied using scanning electron microscopy and 2D Raman imaging revealing an inhomogeneous dispersion of BC within the gelatin matrix. The composite materials showed controllable degrees of transparency to visible light and opacity to UV light depending on BC weight fraction. By adding a 10 wt % fraction of BC in gelatin, visible (= 550 nm) and UV (= 350 nm) transmittances were found to decrease by ∼35 and 40%, respectively. Additionally, stress transfer occurring between the gelatin and BC fibrils was quantified using Raman spectroscopy. This is the first report for a gelatin-matrix composite containing cellulose. As a function of strain, two distinct domains, both showing linear relationships, were observed for which an average initial shift rate with respect to strain of -0.63 ± 0.2 cm-1%-1 was observed, followed by an average shift rate of -0.25 ± 0.03 cm-1%-1. The average initial Raman band shift rate value corresponds to an average effective Young's modulus of 39 ± 13 GPa and 73 ± 25 GPa, respectively, for either a 2D and 3D network of BC fibrils embedded in the gelatin matrix. As a function of stress, a linear relationship was observed with a Raman band shift rate of -27 ± 3 cm-1GPa-1. The potential use of these composite materials as a UV blocking food coating is discussed.

AB - This work reports on the preparation and characterization of natural composite materials prepared from bacterial cellulose (BC) incorporated into a gelatin matrix. Composite morphology was studied using scanning electron microscopy and 2D Raman imaging revealing an inhomogeneous dispersion of BC within the gelatin matrix. The composite materials showed controllable degrees of transparency to visible light and opacity to UV light depending on BC weight fraction. By adding a 10 wt % fraction of BC in gelatin, visible (= 550 nm) and UV (= 350 nm) transmittances were found to decrease by ∼35 and 40%, respectively. Additionally, stress transfer occurring between the gelatin and BC fibrils was quantified using Raman spectroscopy. This is the first report for a gelatin-matrix composite containing cellulose. As a function of strain, two distinct domains, both showing linear relationships, were observed for which an average initial shift rate with respect to strain of -0.63 ± 0.2 cm-1%-1 was observed, followed by an average shift rate of -0.25 ± 0.03 cm-1%-1. The average initial Raman band shift rate value corresponds to an average effective Young's modulus of 39 ± 13 GPa and 73 ± 25 GPa, respectively, for either a 2D and 3D network of BC fibrils embedded in the gelatin matrix. As a function of stress, a linear relationship was observed with a Raman band shift rate of -27 ± 3 cm-1GPa-1. The potential use of these composite materials as a UV blocking food coating is discussed.

UR - http://www.scopus.com/inward/record.url?scp=84930960556&partnerID=8YFLogxK

U2 - 10.1021/acs.biomac.5b00345

DO - 10.1021/acs.biomac.5b00345

M3 - Article

C2 - 25928444

AN - SCOPUS:84930960556

VL - 16

SP - 1784

EP - 1793

JO - Biomacromolecules

JF - Biomacromolecules

SN - 1525-7797

IS - 6

ER -