In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria: Effect of chemical crosslinking

Cristina Castro; Arja Vesterinen; Robin Zuluaga; Gloria Caro; Ilari Filpponen; Orlando J. Rojas; Galder Kortaberria; Piedad Gañán

doi:10.1007/s10570-014-0170-1

In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria: Effect of chemical crosslinking

Cristina Castro, Arja Vesterinen, Robin Zuluaga, Gloria Caro, Ilari Filpponen, Orlando J. Rojas, Galder Kortaberria, Piedad Gañán

Research output: Contribution to journal › Article in an indexed scientific journal › Research › peer-review

56 Scopus citations

Abstract

Nanocomposites of poly(vinyl alcohol) (PVA) reinforced with bacterial cellulose (BC) were bioproduced by Gluconacetobacter genus bacteria. BC was grown from a culture medium modified with water-soluble PVA to allow in situ assembly and production of a novel nanocomposite that displayed synergistic property contributions from the individual components. Chemical crosslinking with glyoxal was performed to avoid the loss of PVA matrix during purification steps and to improve the functional properties of composite films. Reinforcement with BC at 0.6, 6 and 14 wt% content yielded nanocomposites with excellent mechanical, thermal and dimensional properties as well as moisture stability. Young's modulus and strength at break increased markedly with the reinforcing BC: relative to the control sample (in absence of BC), increases of 15, 165 and 680 % were determined for nanocomposites with 0.6, 6 and 14 % BC loading, respectively. The corresponding increase in tensile strengths at yield were 1, 12 and 40 %, respectively. The results indicate an exceptional reinforcing effect by the three-dimensional network structure formed by the BC upon biosynthesis embedded in the PVA matrix and also suggest a large percolation within the matrix. Bonding (mainly hydrogen bonding) and chemical crosslinking between the reinforcing phase and matrix were the main contributions to the properties of the nanocomposite.

Original language	English
Pages (from-to)	1745-1756
Number of pages	12
Journal	Cellulose
Volume	21
Issue number	3
DOIs	https://doi.org/10.1007/s10570-014-0170-1
State	Published - Jun 2014

Bibliographical note

Funding Information:
Acknowledgments The authors would like to acknowledge Colombia’s COLCIENCIAS and SENA for financial support as well as Prof. Janne Laine of the Department of Forest Products Technology of Aalto University (Finland).

Keywords

Bacterial cellulose
Gluconacetobacter medellinensis
Mechanical properties
Nano composites
Poly(vinyl alcohol)
Thermal stability

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10.1007/s10570-014-0170-1

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@article{8c18e43c22384079a8cdfc3aa5e9d077,

title = "In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria: Effect of chemical crosslinking",

abstract = "Nanocomposites of poly(vinyl alcohol) (PVA) reinforced with bacterial cellulose (BC) were bioproduced by Gluconacetobacter genus bacteria. BC was grown from a culture medium modified with water-soluble PVA to allow in situ assembly and production of a novel nanocomposite that displayed synergistic property contributions from the individual components. Chemical crosslinking with glyoxal was performed to avoid the loss of PVA matrix during purification steps and to improve the functional properties of composite films. Reinforcement with BC at 0.6, 6 and 14 wt% content yielded nanocomposites with excellent mechanical, thermal and dimensional properties as well as moisture stability. Young's modulus and strength at break increased markedly with the reinforcing BC: relative to the control sample (in absence of BC), increases of 15, 165 and 680 % were determined for nanocomposites with 0.6, 6 and 14 % BC loading, respectively. The corresponding increase in tensile strengths at yield were 1, 12 and 40 %, respectively. The results indicate an exceptional reinforcing effect by the three-dimensional network structure formed by the BC upon biosynthesis embedded in the PVA matrix and also suggest a large percolation within the matrix. Bonding (mainly hydrogen bonding) and chemical crosslinking between the reinforcing phase and matrix were the main contributions to the properties of the nanocomposite.",

keywords = "Bacterial cellulose, Gluconacetobacter medellinensis, Mechanical properties, Nano composites, Poly(vinyl alcohol), Thermal stability",

author = "Cristina Castro and Arja Vesterinen and Robin Zuluaga and Gloria Caro and Ilari Filpponen and Rojas, {Orlando J.} and Galder Kortaberria and Piedad Ga{\~n}{\'a}n",

note = "Funding Information: Acknowledgments The authors would like to acknowledge Colombia{\textquoteright}s COLCIENCIAS and SENA for financial support as well as Prof. Janne Laine of the Department of Forest Products Technology of Aalto University (Finland).",

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doi = "10.1007/s10570-014-0170-1",

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journal = "Cellulose",

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In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria: Effect of chemical crosslinking. / Castro, Cristina; Vesterinen, Arja; Zuluaga, Robin et al.
In: Cellulose, Vol. 21, No. 3, 06.2014, p. 1745-1756.

Research output: Contribution to journal › Article in an indexed scientific journal › Research › peer-review

TY - JOUR

T1 - In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria

T2 - Effect of chemical crosslinking

AU - Castro, Cristina

AU - Vesterinen, Arja

AU - Zuluaga, Robin

AU - Caro, Gloria

AU - Filpponen, Ilari

AU - Rojas, Orlando J.

AU - Kortaberria, Galder

AU - Gañán, Piedad

N1 - Funding Information: Acknowledgments The authors would like to acknowledge Colombia’s COLCIENCIAS and SENA for financial support as well as Prof. Janne Laine of the Department of Forest Products Technology of Aalto University (Finland).

PY - 2014/6

Y1 - 2014/6

N2 - Nanocomposites of poly(vinyl alcohol) (PVA) reinforced with bacterial cellulose (BC) were bioproduced by Gluconacetobacter genus bacteria. BC was grown from a culture medium modified with water-soluble PVA to allow in situ assembly and production of a novel nanocomposite that displayed synergistic property contributions from the individual components. Chemical crosslinking with glyoxal was performed to avoid the loss of PVA matrix during purification steps and to improve the functional properties of composite films. Reinforcement with BC at 0.6, 6 and 14 wt% content yielded nanocomposites with excellent mechanical, thermal and dimensional properties as well as moisture stability. Young's modulus and strength at break increased markedly with the reinforcing BC: relative to the control sample (in absence of BC), increases of 15, 165 and 680 % were determined for nanocomposites with 0.6, 6 and 14 % BC loading, respectively. The corresponding increase in tensile strengths at yield were 1, 12 and 40 %, respectively. The results indicate an exceptional reinforcing effect by the three-dimensional network structure formed by the BC upon biosynthesis embedded in the PVA matrix and also suggest a large percolation within the matrix. Bonding (mainly hydrogen bonding) and chemical crosslinking between the reinforcing phase and matrix were the main contributions to the properties of the nanocomposite.

AB - Nanocomposites of poly(vinyl alcohol) (PVA) reinforced with bacterial cellulose (BC) were bioproduced by Gluconacetobacter genus bacteria. BC was grown from a culture medium modified with water-soluble PVA to allow in situ assembly and production of a novel nanocomposite that displayed synergistic property contributions from the individual components. Chemical crosslinking with glyoxal was performed to avoid the loss of PVA matrix during purification steps and to improve the functional properties of composite films. Reinforcement with BC at 0.6, 6 and 14 wt% content yielded nanocomposites with excellent mechanical, thermal and dimensional properties as well as moisture stability. Young's modulus and strength at break increased markedly with the reinforcing BC: relative to the control sample (in absence of BC), increases of 15, 165 and 680 % were determined for nanocomposites with 0.6, 6 and 14 % BC loading, respectively. The corresponding increase in tensile strengths at yield were 1, 12 and 40 %, respectively. The results indicate an exceptional reinforcing effect by the three-dimensional network structure formed by the BC upon biosynthesis embedded in the PVA matrix and also suggest a large percolation within the matrix. Bonding (mainly hydrogen bonding) and chemical crosslinking between the reinforcing phase and matrix were the main contributions to the properties of the nanocomposite.

KW - Bacterial cellulose

KW - Gluconacetobacter medellinensis

KW - Mechanical properties

KW - Nano composites

KW - Poly(vinyl alcohol)

KW - Thermal stability

UR - http://www.scopus.com/inward/record.url?scp=84901239949&partnerID=8YFLogxK

U2 - 10.1007/s10570-014-0170-1

DO - 10.1007/s10570-014-0170-1

M3 - Artículo en revista científica indexada

AN - SCOPUS:84901239949

SN - 0969-0239

VL - 21

SP - 1745

EP - 1756

JO - Cellulose

JF - Cellulose

IS - 3

ER -

In situ production of nanocomposites of poly(vinyl alcohol) and cellulose nanofibrils from Gluconacetobacter bacteria: Effect of chemical crosslinking

Abstract

Bibliographical note

Keywords

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