Preparation and characterization of new mouldable cellulose-AESO biocomposites

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Joanna Narewska, Lippo Lassila, Pedro Fardim
Publisher: SPRINGER
Publication year: 2014
Journal: Cellulose
Journal acronym: CELLULOSE
Volume number: 21
Issue number: 3
Start page: 1769
End page: 1780
Number of pages: 12
ISSN: 0969-0239
eISSN: 1572-882X


Abstract

A new concept of using acrylated epoxidized soybean oil (AESO) in the production of 3D cellulose biocomposites was evaluated. Cellulose-AESO composites were prepared by dissolving pulp in N,N-dimethylacetamide/lithium chloride and adding AESO and an initiator to the solutions followed by thermal curing and compression moulding at room temperature. The resulting biocomposites were characterized by FE-SEM, FT-IR, XRD, GC, TGA and nano- and microindentation. SEM images indicated the presence of spherical morphology and FT-IR together with TGA results showed no hydrogen or covalent bonding between the two components. The existence of hydrophobic interactions between AESO molecules and cellulose hydrophobic domains was proposed. AESO aggregates captured and covered by cellulose chains increase the flexibility of the composites acting as specific plasticizer and after polymerization introduce strength to the material. It was found that the optimal amount of AESO for achieving both desired hardness and good mouldability should be below 20 %.


Keywords

AESO, Cellulose, Hydrophobic interactions, Mouldability

Last updated on 2019-20-11 at 04:11