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Reinforcing capability of cellulose nanocrystals obtained from pine cones in a biodegradable poly(3-hydroxybutyrate)/poly(ε-caprolactone) (PHB/PCL) thermoplastic blend
Instituto de Tecnología de Materiales-ITM, Universitat Politècnica de València, Alicante, Spain.
Instituto de Tecnología de Materiales-ITM, Universitat Politècnica de València, Alicante, Spain.
Instituto de Tecnología de Materiales-ITM, Universitat Politècnica de València, Alicante, Spain.
School of Engineering Science in Chemistry, Biotechnology and Health, Department of Fibre and Polymer Technology, KTH-Royal Institute of Technology, Stockholm, Sweden.
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2018 (English)In: European Polymer Journal, ISSN 0014-3057, E-ISSN 1873-1945, Vol. 104, p. 10-18Article in journal (Refereed) Published
Abstract [en]

In this work, different loads (3, 5 and 7 wt%) of pine cone cellulose nanocrystals (CNCs) were added to films ofpoly(3-hydroxybutyrate)/poly(ε-caprolactone) (PHB/PCL) blends with a composition of 75 wt% PHB and 25 wt% PCL (PHB75/PCL25). The films were obtained after solvent casting followed by melt compounding in anextruder and finally subjected to a thermocompression process. The influence of different CNCs loadings on themechanical, thermal, optical, wettability and disintegration in controlled compost properties of the PHB75/PCL25blend was discussed. Field emission scanning electron microscopy (FESEM) revealed the best dispersion of CNCson the polymeric matrix was at a load of 3 wt%. Over this loading, CNCs aggregates were formed enhancing thefilms fragilization due to stress concentration phenomena. However, the addition of CNCs improved the opticalproperties of the PHB75/PCL25films by increasing their transparency and accelerated the film disintegration incontrolled soil conditions. In general, the blend with 3 wt% CNCs offers the best balanced properties in terms ofmechanical, thermal, optical and wettability

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 104, p. 10-18
Keywords [en]
Poly(3-hydroxybutyrate)Poly(ε-caprolactone), Biodegradability, Cellulose nanocrystals (CNCs), Thermoplastic blends
National Category
Materials Chemistry Polymer Technologies Composite Science and Engineering
Research subject
Mechanics of Materials
Identifiers
URN: urn:nbn:se:his:diva-15169DOI: 10.1016/j.eurpolymj.2018.04.036ISI: 000436886800002Scopus ID: 2-s2.0-85046826505OAI: oai:DiVA.org:his-15169DiVA, id: diva2:1210043
Available from: 2018-05-25 Created: 2018-05-25 Last updated: 2018-07-20Bibliographically approved

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Moriana, Rosana

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