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Preparation and Characterization of Films Based on Disintegrated Bacterial Cellulose and Montmorillonite.

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Title: Preparation and Characterization of Films Based on Disintegrated Bacterial Cellulose and Montmorillonite.
Authors: Sommer, Agata1 (AUTHOR), Staroszczyk, Hanna1 (AUTHOR) hanna.staroszczyk@pg.edu.pl, Sinkiewicz, Izabela1 (AUTHOR), Bruździak, Piotr2 (AUTHOR)
Source: Journal of Polymers & the Environment. May2021, Vol. 29 Issue 5, p1526-1541. 16p.
Subject Terms: *Montmorillonite, *Cellulose, *Biopolymers, *Food packaging, *Packaging materials, *Packaged foods
Abstract: The food packaging materials from natural polymers including polysaccharides offer an ecologically important alternative to commonly used synthetic, non-biodegradable counterparts. The purpose of this work was to modify of bacterial cellulose (BC) leading to the improvement of its functional properties in terms of use as a food packaging material. Effects of disintegration of BC and addition of montmorillonite (MMT) on its water barrier, mechanical and thermal properties were investigated. Disintegration of BC increased its water vapour permeability (WVP) and thermal stability, but decreased its tensile strength (σ). These changes were closely related to the rearrangement of hydrogen-bond network in the BC structure, resulting in a partial conversion from the Iα to Iβ allomorph. The addition of 2% of MMT did not affect WVP and σ of the disintegrated BC (bBC), while the plasticization of the modified bBC generally decreased WVP, and did not increase σ. The improvement in water barrier properties of bBC modified by adding 2% of MMT in the presence of glycerol was caused by the formation of hydrogen bonds between the components of the composite. The results presented show the potential usefulness of BC modified by disintegration and adding 2% of MMT and 10–15% of glycerol as a food packaging material. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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An: 149849261
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Preparation and Characterization of Films Based on Disintegrated Bacterial Cellulose and Montmorillonite.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Sommer%2C+Agata%22">Sommer, Agata</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Staroszczyk%2C+Hanna%22">Staroszczyk, Hanna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> hanna.staroszczyk@pg.edu.pl</i><br /><searchLink fieldCode="AR" term="%22Sinkiewicz%2C+Izabela%22">Sinkiewicz, Izabela</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bruździak%2C+Piotr%22">Bruździak, Piotr</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Label: Source
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Polymers+%26+the+Environment%22">Journal of Polymers & the Environment</searchLink>. May2021, Vol. 29 Issue 5, p1526-1541. 16p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Montmorillonite%22">Montmorillonite</searchLink><br />*<searchLink fieldCode="DE" term="%22Cellulose%22">Cellulose</searchLink><br />*<searchLink fieldCode="DE" term="%22Biopolymers%22">Biopolymers</searchLink><br />*<searchLink fieldCode="DE" term="%22Food+packaging%22">Food packaging</searchLink><br />*<searchLink fieldCode="DE" term="%22Packaging+materials%22">Packaging materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Packaged+foods%22">Packaged foods</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The food packaging materials from natural polymers including polysaccharides offer an ecologically important alternative to commonly used synthetic, non-biodegradable counterparts. The purpose of this work was to modify of bacterial cellulose (BC) leading to the improvement of its functional properties in terms of use as a food packaging material. Effects of disintegration of BC and addition of montmorillonite (MMT) on its water barrier, mechanical and thermal properties were investigated. Disintegration of BC increased its water vapour permeability (WVP) and thermal stability, but decreased its tensile strength (σ). These changes were closely related to the rearrangement of hydrogen-bond network in the BC structure, resulting in a partial conversion from the Iα to Iβ allomorph. The addition of 2% of MMT did not affect WVP and σ of the disintegrated BC (bBC), while the plasticization of the modified bBC generally decreased WVP, and did not increase σ. The improvement in water barrier properties of bBC modified by adding 2% of MMT in the presence of glycerol was caused by the formation of hydrogen bonds between the components of the composite. The results presented show the potential usefulness of BC modified by disintegration and adding 2% of MMT and 10–15% of glycerol as a food packaging material. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s10924-020-01968-5
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 1526
    Subjects:
      – SubjectFull: Montmorillonite
        Type: general
      – SubjectFull: Cellulose
        Type: general
      – SubjectFull: Biopolymers
        Type: general
      – SubjectFull: Food packaging
        Type: general
      – SubjectFull: Packaging materials
        Type: general
      – SubjectFull: Packaged foods
        Type: general
    Titles:
      – TitleFull: Preparation and Characterization of Films Based on Disintegrated Bacterial Cellulose and Montmorillonite.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Sommer, Agata
      – PersonEntity:
          Name:
            NameFull: Staroszczyk, Hanna
      – PersonEntity:
          Name:
            NameFull: Sinkiewicz, Izabela
      – PersonEntity:
          Name:
            NameFull: Bruździak, Piotr
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: May2021
              Type: published
              Y: 2021
          Identifiers:
            – Type: issn-print
              Value: 15662543
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              Value: 29
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Journal of Polymers & the Environment
              Type: main
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