Films from xylan/chitosan complexes: Preparation and characterization

Carla N. Schnell, Maria V. Galvan, Maria S. Peresin, Maria C. Inalbon, Jari Vartiainen, Miguel A. Zanuttini, Paulina Mocchiutti (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

Films from colloidal suspensions of cationic polyelectrolyte complexes of xylan (Xyl) and chitosan (Ch) were formed and characterized by measuring: oxygen and water vapor barrier properties, solubility, and mechanical properties. High xylan content (Xyl/Ch mass ratio: from 70/30 to 85/15) was used, and a low amount of plasticizer (10 wt% glycerol) was always added. At 50% relative humidity (RH), all films had promising oxygen barrier properties (<0.3 μm cm 3/day m 2 kPa) and good mechanical properties for applications such as food packaging (stress at break of 10 MPa and strain at break of 12.2% for 70/30 Xyl/Ch film). All films showed a moderate water vapor transmission rate: 19.6–21.3 g/(h m 2). Although solubility was relatively high (26.5–35.4%), the integrity of the films was maintained after immersion in pH 5.0 buffer solution for 24 h. The 70/30 film was the most transparent, uniform, and deformable of the formulations evaluated, showing low crystallinity according to X-ray diffraction results. Dynamic mechanical analysis revealed a high correlation between its viscoelastic behavior and changes in RH (from 0 to 80% RH). Studies conducted using an agar disc diffusion protocol showed antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria only in the contact area under the film discs.

Original languageEnglish
Pages (from-to)4393-4403
Number of pages11
JournalCellulose
Volume24
Issue number10
DOIs
Publication statusE-pub ahead of print - 29 Jul 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Xylans
Chitosan
Atmospheric humidity
Steam
Water vapor
Solubility
Oxygen
Plasticizers
Mechanical properties
Dynamic mechanical analysis
Polyelectrolytes
Glycerol
Escherichia coli
Agar
Suspensions
Bacteria
Packaging
Buffers
X ray diffraction

Keywords

  • Natural polyelectrolyte complexes
  • Barrier properties
  • Relative humidity effect
  • Antimicrobial effect
  • Mechanical properties

Cite this

Schnell, C. N., Galvan, M. V., Peresin, M. S., Inalbon, M. C., Vartiainen, J., Zanuttini, M. A., & Mocchiutti, P. (2017). Films from xylan/chitosan complexes: Preparation and characterization. Cellulose, 24(10), 4393-4403. https://doi.org/10.1007/s10570-017-1411-x
Schnell, Carla N. ; Galvan, Maria V. ; Peresin, Maria S. ; Inalbon, Maria C. ; Vartiainen, Jari ; Zanuttini, Miguel A. ; Mocchiutti, Paulina. / Films from xylan/chitosan complexes : Preparation and characterization. In: Cellulose. 2017 ; Vol. 24, No. 10. pp. 4393-4403.
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Schnell, CN, Galvan, MV, Peresin, MS, Inalbon, MC, Vartiainen, J, Zanuttini, MA & Mocchiutti, P 2017, 'Films from xylan/chitosan complexes: Preparation and characterization', Cellulose, vol. 24, no. 10, pp. 4393-4403. https://doi.org/10.1007/s10570-017-1411-x

Films from xylan/chitosan complexes : Preparation and characterization. / Schnell, Carla N.; Galvan, Maria V.; Peresin, Maria S.; Inalbon, Maria C.; Vartiainen, Jari; Zanuttini, Miguel A.; Mocchiutti, Paulina (Corresponding Author).

In: Cellulose, Vol. 24, No. 10, 29.07.2017, p. 4393-4403.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Films from xylan/chitosan complexes

T2 - Preparation and characterization

AU - Schnell, Carla N.

AU - Galvan, Maria V.

AU - Peresin, Maria S.

AU - Inalbon, Maria C.

AU - Vartiainen, Jari

AU - Zanuttini, Miguel A.

AU - Mocchiutti, Paulina

PY - 2017/7/29

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N2 - Films from colloidal suspensions of cationic polyelectrolyte complexes of xylan (Xyl) and chitosan (Ch) were formed and characterized by measuring: oxygen and water vapor barrier properties, solubility, and mechanical properties. High xylan content (Xyl/Ch mass ratio: from 70/30 to 85/15) was used, and a low amount of plasticizer (10 wt% glycerol) was always added. At 50% relative humidity (RH), all films had promising oxygen barrier properties (<0.3 μm cm 3/day m 2 kPa) and good mechanical properties for applications such as food packaging (stress at break of 10 MPa and strain at break of 12.2% for 70/30 Xyl/Ch film). All films showed a moderate water vapor transmission rate: 19.6–21.3 g/(h m 2). Although solubility was relatively high (26.5–35.4%), the integrity of the films was maintained after immersion in pH 5.0 buffer solution for 24 h. The 70/30 film was the most transparent, uniform, and deformable of the formulations evaluated, showing low crystallinity according to X-ray diffraction results. Dynamic mechanical analysis revealed a high correlation between its viscoelastic behavior and changes in RH (from 0 to 80% RH). Studies conducted using an agar disc diffusion protocol showed antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria only in the contact area under the film discs.

AB - Films from colloidal suspensions of cationic polyelectrolyte complexes of xylan (Xyl) and chitosan (Ch) were formed and characterized by measuring: oxygen and water vapor barrier properties, solubility, and mechanical properties. High xylan content (Xyl/Ch mass ratio: from 70/30 to 85/15) was used, and a low amount of plasticizer (10 wt% glycerol) was always added. At 50% relative humidity (RH), all films had promising oxygen barrier properties (<0.3 μm cm 3/day m 2 kPa) and good mechanical properties for applications such as food packaging (stress at break of 10 MPa and strain at break of 12.2% for 70/30 Xyl/Ch film). All films showed a moderate water vapor transmission rate: 19.6–21.3 g/(h m 2). Although solubility was relatively high (26.5–35.4%), the integrity of the films was maintained after immersion in pH 5.0 buffer solution for 24 h. The 70/30 film was the most transparent, uniform, and deformable of the formulations evaluated, showing low crystallinity according to X-ray diffraction results. Dynamic mechanical analysis revealed a high correlation between its viscoelastic behavior and changes in RH (from 0 to 80% RH). Studies conducted using an agar disc diffusion protocol showed antimicrobial activity against Escherichia coli and Staphylococcus aureus bacteria only in the contact area under the film discs.

KW - Natural polyelectrolyte complexes

KW - Barrier properties

KW - Relative humidity effect

KW - Antimicrobial effect

KW - Mechanical properties

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U2 - 10.1007/s10570-017-1411-x

DO - 10.1007/s10570-017-1411-x

M3 - Article

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SP - 4393

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JO - Cellulose

JF - Cellulose

SN - 0969-0239

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Schnell CN, Galvan MV, Peresin MS, Inalbon MC, Vartiainen J, Zanuttini MA et al. Films from xylan/chitosan complexes: Preparation and characterization. Cellulose. 2017 Jul 29;24(10):4393-4403. https://doi.org/10.1007/s10570-017-1411-x