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Poly(lactic acid) melt-spun fibers reinforced with functionalized cellulose nanocrystals
Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, Italy.
Division of Materials Science, Composite Centre Sweden, Luleå University of Technology, Luleå, Sweden .
University of Borås, Faculty of Textiles, Engineering and Business. (Polymerteknologi)ORCID iD: 0000-0002-6596-8069
Dipartimento di Ingegneria Civile e Ambientale, Università di Perugia, Italy.
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2016 (English)In: RSC Advances, Vol. 6, 9221-9231 p.Article in journal (Refereed) Published
Abstract [en]

Poly(lactic acid)-cellulose nanocrystals (PLA/CNC) nanocomposite fibers with 1% weight fraction of nanocrystals were prepared via melt-spinning. In order to improve the compatibility between PLA and the CNC, PLLA chains were grafted onto the CNC surface using a "grafting from" reaction. For comparison, melt-spun PLA fibers and nanocomposites with unmodified CNC were also prepared. The morphology and thermal and mechanical properties of the fibers with different draw ratios were determined. The results of this research show that the surface modification together with drawing resulted in improved fiber properties, which are expected to depend on the alignment of the CNC and PLA molecular chains. The modification is also expected to lead to a flexible interface, which leads to more stretchable fibers. The main conclusion is that PLLA grafting is a very promising approach to improve the dispersion of CNC in PLA, thus creating interfacial adhesion between the phases and making it possible to spin fibers that can be drawn with improved mechanical performance.

Place, publisher, year, edition, pages
Royal Society of Chemistry , 2016. Vol. 6, 9221-9231 p.
Keyword [en]
polylactic acid, cellulose nanocrystals, melt-spun fibers
National Category
Polymer Technologies Composite Science and Engineering
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-11607DOI: 10.1039/C5RA22818BISI: 000369515900082ScopusID: 84962415041OAI: oai:DiVA.org:hb-11607DiVA: diva2:1062037
Available from: 2017-01-04 Created: 2017-01-04 Last updated: 2017-01-05Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • vancouver
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