Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance

Sanna Virtanen, Jari Vartianen, Harri Setälä, Tekla Tammelin, Sauli Vuoti

Research output: Contribution to journalArticleScientificpeer-review

46 Citations (Scopus)

Abstract

In this study chemically surface-modified nanofibrillated cellulose (NFC) was used at low levels (0.5 to 3 wt%) as reinforcement in a polyvinyl alcohol (PVA) matrix. The modified NFC-PVA films prepared by a solution casting technique showed improved mechanical performance and good optical properties. NFC was allylated and further epoxidised with hydrogen peroxide. The addition of 1 wt% epoxy-NFC enhanced the modulus and strength of the pure PVA film, 474% and 224%, respectively. This composite film exhibited visible light transmittance of 83%. The results also showed that 1 wt% epoxy-NFC loading was beneficial to improve the crystallinity of PVA. SEM characterization confirmed better dispersion of modified NFC within the PVA matrix compared to unmodified NFC. The result showed the favourable effect of chemically modified NFC on the mechanical properties of PVA compared to unmodified NFC as reinforcement.

Original languageEnglish
Pages (from-to)11343-11350
Number of pages8
JournalRSC Advances
Volume4
Issue number22
DOIs
Publication statusPublished - 28 Feb 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Polyvinyl Alcohol
Polyvinyl alcohols
Cellulose
Reinforcement
Composite films
Hydrogen peroxide
Hydrogen Peroxide
Casting
Optical properties
Mechanical properties
Scanning electron microscopy

Keywords

  • cellulose

Cite this

Virtanen, Sanna ; Vartianen, Jari ; Setälä, Harri ; Tammelin, Tekla ; Vuoti, Sauli. / Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance. In: RSC Advances. 2014 ; Vol. 4, No. 22. pp. 11343-11350.
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Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance. / Virtanen, Sanna; Vartianen, Jari; Setälä, Harri; Tammelin, Tekla; Vuoti, Sauli.

In: RSC Advances, Vol. 4, No. 22, 28.02.2014, p. 11343-11350.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Modified nanofibrillated cellulose-polyvinyl alcohol films with improved mechanical performance

AU - Virtanen, Sanna

AU - Vartianen, Jari

AU - Setälä, Harri

AU - Tammelin, Tekla

AU - Vuoti, Sauli

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