Cellulose nanofibril-reinforced composites using aqueous dispersed ethylene-acrylic acid copolymer
Artikel i vetenskaplig tidskrift, 2018

In order to explore the reinforcing capabilities of cellulose nanofibrils, composites containing high contents of cellulose nanofibrils were prepared through a combination of water-assisted mixing and compression moulding, the components being a cellulose nanofibril suspension and an aqueous dispersion of the polyolefin copolymer poly(ethylene-co-acrylic acid). The composite samples had dry cellulose nanofibril contents from 10 to 70 vol%. Computed tomography revealed well dispersed cellulose fibril/fibres in the polymer matrix. The highest content of 70 vol% cellulose nanofibrils increased the strength and stiffness of the composites by factors of 3.5 and 21, respectively, while maintaining an elongation at break of about 5%. The strength and strain-at-break of cellulose nanofibril composites were superior to the pulp composites at cellulose contents greater than 20 vol%. The stiffness of the composites reinforced with cellulose nanofibrils was not higher than for that of composites reinforced with cellulose pulp fibres. Graphical Abstract: [Figure not available: see fulltext.].

Direct mixing

Nanocomposite

Cellulose composite

Cellulose nanofibrils

Amphiphilic co-polymer

Latex

Rheology

Författare

Abhijit Venkatesh

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Johannes Thunberg

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Tobias Moberg

Polymera material och kompositer

Wallenberg Wood Science Center (WWSC)

Maria Klingberg

Polymera material och kompositer

Lars Hammar

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Anna Peterson

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Christian Müller

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Antal Boldizar

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Cellulose

0969-0239 (ISSN)

Vol. 25 8 4577-4589

Ämneskategorier

Pappers-, massa- och fiberteknik

Polymerteknologi

Kompositmaterial och -teknik

DOI

10.1007/s10570-018-1875-3

Mer information

Senast uppdaterat

2018-09-05