Repository logo
  • English
  • Deutsch
  • Français
Log In
New user? Click here to register.Have you forgotten your password?
  1. Home
  2. CRIS
  3. Publication
  4. Efficiently Extracted Cellulose Nanocrystals and Starch Nanoparticles and Techno-Functional Properties of Films Made Thereof
 

Efficiently Extracted Cellulose Nanocrystals and Starch Nanoparticles and Techno-Functional Properties of Films Made Thereof

URI
https://arbor.bfh.ch/handle/arbor/39788
Version
Published
Date Issued
2018
Author(s)
Metzger, Christoph
Sanahuja, Solange  
Behrends, Lisa
Sängerlaub, Sven
Lindner, Martina
Briesen, Heiko
Type
Article
Language
English
Subjects

cellulose nanocrystal...

starch nanoparticles ...

biopolymers

packaging

barrier films

nanomaterials

nanocomposites

bio-coatings

oxygen barrier

water vapor barrier

Abstract
Cellulose nanocrystals (CNC) and starch nanoparticles (SNP) have remarkable physical and mechanical characteristics. These properties particularly facilitate their application as high-performance components of bio-based packaging films as alternatives to fossil-based counterparts. This study demonstrates a time-efficient and resource-saving extraction process of CNC and SNP by sulfuric acid hydrolysis and neutralization. The yields of the hydrolyzed products were 41.4% (CNC) and 32.2% (SNP) after hydrolysis times of 3 h and 120 h, respectively. The nanoparticle dispersions were wet-coated onto poly(lactic acid) (PLA) and paper substrates and were incorporated into starch films. No purification or functionalization of the nanoparticles was performed prior to their application. Techno-functional properties such as the permeability of oxygen and water vapor were determined. The oxygen permeability of 5–9 cm3 (STP) 100 µm m−2 d−1 bar−1 at 50% relative humidity and 23 °C on PLA makes the coatings suitable as oxygen barriers. The method used for the extraction of CNC and SNP contributes to the economic production of these nanomaterials. Further improvements, e.g., lower ion concentration and narrower particle size distribution, to achieve reproducible techno-functional properties are tangible.
Subjects
QC Physics
QD Chemistry
TJ Mechanical engineering and machinery
TP Chemical technology
DOI
10.24451/arbor.8700
https://doi.org/10.24451/arbor.8700
Publisher DOI
10.3390/coatings8040142
Journal
Coatings
ISSN
2079-6412
Publisher URL
https://www.mdpi.com/2079-6412/8/4/142?type=check_update&version=1
Organization
Konsumentenorientierte Lebensmittelproduktion  
Lebensmittelverarbeitung  
Volume
8
Issue
4
Publisher
MDPI
Submitter
SanahujaS
Citation apa
Metzger, C., Sanahuja, S., Behrends, L., Sängerlaub, S., Lindner, M., & Briesen, H. (2018). Efficiently Extracted Cellulose Nanocrystals and Starch Nanoparticles and Techno-Functional Properties of Films Made Thereof. In Coatings (Vol. 8, Issue 4). MDPI. https://doi.org/10.24451/arbor.8700
File(s)
Loading...
Thumbnail Image

open access

Name

Metzger_Sanahuja_2018_NCC starch nanocrystalls film coating.pdf

License
Attribution 4.0 International
Version
published
Size

19.18 MB

Format

Adobe PDF

Checksum (MD5)

725d0e5982dd2f6b96a1620ffa43db77

About ARBOR

Built with DSpace-CRIS software - System hosted and mantained by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement
  • Send Feedback
  • Our institution