Thermal, mechanical and viscoelastic properties of citric acid-crosslinked starch/cellulose composite foams.
Biocomposites
Cross-linking
Flexural properties
Moisture absorption
Starch/cellulose foam
Viscoelastic properties
Journal
Carbohydrate polymers
ISSN: 1879-1344
Titre abrégé: Carbohydr Polym
Pays: England
ID NLM: 8307156
Informations de publication
Date de publication:
15 Feb 2020
15 Feb 2020
Historique:
received:
14
08
2019
revised:
24
11
2019
accepted:
25
11
2019
entrez:
1
1
2020
pubmed:
1
1
2020
medline:
1
1
2020
Statut:
ppublish
Résumé
In this work, biodegradable starch/cellulose composite foams were fabricated at 220 °C by compression moulding gelatinised starch containing cellulose fibres as a reinforcing agent and citric acid as a cross-linking agent. It was found that the stiffness, tensile strength, flexural strength, and hydrophobicity of the starch/cellulose composite foams increased, and water absorption capacity decreased with an increase in the concentration of citric acid. The tensile strength increased from 1.76 MPa for 0 % citric acid to 2.25 MPa for the starch/cellulose composite foam crosslinked with 5 % (w/w) citric acid. Similarly, the flexural modulus also increased from 445 MPa to 601.1 MPa, and the flexural strength from 3.76 MPa to 7.61 MPa, for the composite foam crosslinked with 5 % (w/w) citric acid. The crosslinked composite foams showed better thermal stability compared to the non-crosslinked composite foam. The resulting composite foams could be used as a biodegradable alternative to expanded polystyrene packaging.
Identifiants
pubmed: 31887917
pii: S0144-8617(19)31343-8
doi: 10.1016/j.carbpol.2019.115675
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
115675Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.