Tailor-made hemicellulose-based hydrogels reinforced with nanofibrillated cellulose

Daniel Dax, M. Soledad Chávez Bastidas, Camila Honorato, Jun Liu, Steven Spoljaric, Jukka Seppälä, Regis T. Mendonça, Chunlin Xu, Stefan Willför, Julio Sánchez

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Extracted and purified hemicelluloses from different plant sources were reported to be suitable crosslinkers in the synthesis of polymeric networks, such as hydrogels. These hydrogels were reported to have a possible medical application or to be part of water purification set-ups. To make these different applications possible, the produced hydrogels need to have specific chemical and physical properties. One way to tailor the final characteristics of the hydrogels is the defined modification of the hemicelluloses in order to generate highly effective hemicellulose-based crosslinkers. In this work, the synthesis of Omicron-acetyl galactoglucomannan derivatives bearing methacrylic functional groups were studied and the produced crosslinkers were applied in the synthesis of various hydrogels with various swelling degrees. In order to improve the mechanical strength of the hydrogels, the application of softwood or hardwood nanofibrillated cellulose (NFC) as a reinforcement material in the cationic hydrogels was studied. Fourier Transform Infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), and scanning electron microscopy (SEM) and static compression measurements were applied to characterize the GGM derivatives and the GGM-based hydrogels. The GGM-based hydrogels were tested in respect to their capacity to remove chromate ions from aqueous solutions and the obtained results underline the high potential of such biocomposites.
Original languageUndefined/Unknown
Pages (from-to)373–384
Number of pages16
JournalNordic Pulp and Paper Research Journal
Volume30
Issue number3
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • Crosslinking
  • Hemicellulose
  • Nanofibrillated cellulose
  • Omicron-acetyl galactoglucomannan
  • Polysaccharide

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