Mechanical, thermal, and water vapor barrier properties of regenerated cellulose/nano-SiO2 composite films

Jeevan Prasad Reddy, A. Varada Rajulu, Jong Whan Rhim, Jongchul Seo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-aminopropyl-functionalized silica nanoparticles (nano-SiO2). The composite films were prepared by dissolving cotton linter RC in a 7% NaOH/12% urea solution followed by the addition of nano-SiO2 and 5% H2SO4 solution. The effects of nano-SiO2 concentration (1–5 wt% with respect to RC) on the morphology, water vapor permeability (WVP), thermal properties, and mechanical properties of the RC/nano-SiO2 composite films were evaluated. Morphological studies indicated uniform dispersions of the low-concentration nano-SiO2 particles in the RC matrix. The tensile strength and modulus were increased by 26% and 15%, respectively, in the presence of 2 wt% of nano-SiO2 relative to the values of neat RC film. The WVP of the RC/nano-SiO2 composite films decreased by 22% after reinforcement with 2 wt% nano-SiO2. The results revealed that there is a potential interaction between RC and nano-SiO2, resulting in improved thermal and mechanical properties of the RC/nano-SiO2 composite films compared to those of neat RC film. Graphical abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-amino propyl functionalized silica nanoparticles (nano-SiO2). The effects of nano-SiO2 (1–5 wt% with respect to RC) on the morphology, water vapor permeability (WVP), and thermal and mechanical properties of the RC/nano-SiO2 composite films were evaluated. This study highlights the potential of organically modified nano-SiO2 to enhance the properties of RC owing to the ability of nano-SiO2 to interact with the RC matrix at very low concentrations (2 wt%).[Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)7153-7165
Number of pages13
JournalCellulose
Volume25
Issue number12
DOIs
Publication statusPublished - 2018 Dec 1

Fingerprint

Cellulose films
Nanocomposite films
Steam
Cellulose
Water vapor
Thermodynamic properties
Silicon Dioxide
Mechanical properties
Silica
Nanoparticles
Hot Temperature
Composite films
Dispersions
Urea
Cotton
Reinforcement
Tensile strength
Elastic moduli

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics

Cite this

Reddy, Jeevan Prasad ; Varada Rajulu, A. ; Rhim, Jong Whan ; Seo, Jongchul. / Mechanical, thermal, and water vapor barrier properties of regenerated cellulose/nano-SiO2 composite films. In: Cellulose. 2018 ; Vol. 25, No. 12. pp. 7153-7165.
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title = "Mechanical, thermal, and water vapor barrier properties of regenerated cellulose/nano-SiO2 composite films",
abstract = "Abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-aminopropyl-functionalized silica nanoparticles (nano-SiO2). The composite films were prepared by dissolving cotton linter RC in a 7{\%} NaOH/12{\%} urea solution followed by the addition of nano-SiO2 and 5{\%} H2SO4 solution. The effects of nano-SiO2 concentration (1–5 wt{\%} with respect to RC) on the morphology, water vapor permeability (WVP), thermal properties, and mechanical properties of the RC/nano-SiO2 composite films were evaluated. Morphological studies indicated uniform dispersions of the low-concentration nano-SiO2 particles in the RC matrix. The tensile strength and modulus were increased by 26{\%} and 15{\%}, respectively, in the presence of 2 wt{\%} of nano-SiO2 relative to the values of neat RC film. The WVP of the RC/nano-SiO2 composite films decreased by 22{\%} after reinforcement with 2 wt{\%} nano-SiO2. The results revealed that there is a potential interaction between RC and nano-SiO2, resulting in improved thermal and mechanical properties of the RC/nano-SiO2 composite films compared to those of neat RC film. Graphical abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-amino propyl functionalized silica nanoparticles (nano-SiO2). The effects of nano-SiO2 (1–5 wt{\%} with respect to RC) on the morphology, water vapor permeability (WVP), and thermal and mechanical properties of the RC/nano-SiO2 composite films were evaluated. This study highlights the potential of organically modified nano-SiO2 to enhance the properties of RC owing to the ability of nano-SiO2 to interact with the RC matrix at very low concentrations (2 wt{\%}).[Figure not available: see fulltext.].",
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Mechanical, thermal, and water vapor barrier properties of regenerated cellulose/nano-SiO2 composite films. / Reddy, Jeevan Prasad; Varada Rajulu, A.; Rhim, Jong Whan; Seo, Jongchul.

In: Cellulose, Vol. 25, No. 12, 01.12.2018, p. 7153-7165.

Research output: Contribution to journalArticle

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T1 - Mechanical, thermal, and water vapor barrier properties of regenerated cellulose/nano-SiO2 composite films

AU - Reddy, Jeevan Prasad

AU - Varada Rajulu, A.

AU - Rhim, Jong Whan

AU - Seo, Jongchul

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N2 - Abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-aminopropyl-functionalized silica nanoparticles (nano-SiO2). The composite films were prepared by dissolving cotton linter RC in a 7% NaOH/12% urea solution followed by the addition of nano-SiO2 and 5% H2SO4 solution. The effects of nano-SiO2 concentration (1–5 wt% with respect to RC) on the morphology, water vapor permeability (WVP), thermal properties, and mechanical properties of the RC/nano-SiO2 composite films were evaluated. Morphological studies indicated uniform dispersions of the low-concentration nano-SiO2 particles in the RC matrix. The tensile strength and modulus were increased by 26% and 15%, respectively, in the presence of 2 wt% of nano-SiO2 relative to the values of neat RC film. The WVP of the RC/nano-SiO2 composite films decreased by 22% after reinforcement with 2 wt% nano-SiO2. The results revealed that there is a potential interaction between RC and nano-SiO2, resulting in improved thermal and mechanical properties of the RC/nano-SiO2 composite films compared to those of neat RC film. Graphical abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-amino propyl functionalized silica nanoparticles (nano-SiO2). The effects of nano-SiO2 (1–5 wt% with respect to RC) on the morphology, water vapor permeability (WVP), and thermal and mechanical properties of the RC/nano-SiO2 composite films were evaluated. This study highlights the potential of organically modified nano-SiO2 to enhance the properties of RC owing to the ability of nano-SiO2 to interact with the RC matrix at very low concentrations (2 wt%).[Figure not available: see fulltext.].

AB - Abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-aminopropyl-functionalized silica nanoparticles (nano-SiO2). The composite films were prepared by dissolving cotton linter RC in a 7% NaOH/12% urea solution followed by the addition of nano-SiO2 and 5% H2SO4 solution. The effects of nano-SiO2 concentration (1–5 wt% with respect to RC) on the morphology, water vapor permeability (WVP), thermal properties, and mechanical properties of the RC/nano-SiO2 composite films were evaluated. Morphological studies indicated uniform dispersions of the low-concentration nano-SiO2 particles in the RC matrix. The tensile strength and modulus were increased by 26% and 15%, respectively, in the presence of 2 wt% of nano-SiO2 relative to the values of neat RC film. The WVP of the RC/nano-SiO2 composite films decreased by 22% after reinforcement with 2 wt% nano-SiO2. The results revealed that there is a potential interaction between RC and nano-SiO2, resulting in improved thermal and mechanical properties of the RC/nano-SiO2 composite films compared to those of neat RC film. Graphical abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-amino propyl functionalized silica nanoparticles (nano-SiO2). The effects of nano-SiO2 (1–5 wt% with respect to RC) on the morphology, water vapor permeability (WVP), and thermal and mechanical properties of the RC/nano-SiO2 composite films were evaluated. This study highlights the potential of organically modified nano-SiO2 to enhance the properties of RC owing to the ability of nano-SiO2 to interact with the RC matrix at very low concentrations (2 wt%).[Figure not available: see fulltext.].

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