Tuning the Porosity, Water Interaction, and Redispersion of Nanocellulose Hydrogels by Osmotic Dehydration

Valentina Guccini; Josphat Phiri; Jon Trifol; Ville Rissanen; Seyede Maryam Mousavi; Jaana Vapaavuori; Tekla Tammelin; Thaddeus Maloney; Eero Kontturi

doi:10.1021/acsapm.1c01430

journal article·2022-01-14Open access

Tuning the Porosity, Water Interaction, and Redispersion of Nanocellulose Hydrogels by Osmotic Dehydration

Valentina Guccini, Josphat Phiri, Jon Trifol, Ville Rissanen, Seyede Maryam Mousavi, Jaana Vapaavuori, Tekla Tammelin, Thaddeus Maloney, Eero Kontturi

ACS Applied Polymer Materials· Volume 4· Issue 1

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Source abstract

Abstract

Osmotic dehydration (OD) was introduced as a method to reproducibly tune the water content and porosity of cellulose nanofiber (CNF) hydrogels. The hierarchical porosity was followed by electron microscopy (pores with a >100 μm diameter) and thermoporosimetry (mesopores), together with mechanical testing, in hydrogels with solid contents ranging from 0.7 to 12 wt %. Furthermore, a reciprocal correlation between proton conductivity and the ratio of water bound to the nanocellulose network was established, suggesting the potential of these systems toward tunable energy materials.

Source: openalex_inverted_index · Quality: baseline

Research context

Polymers Nanomaterials

OpenAlex topics: Advanced Cellulose Research Studies · Electrospun Nanofibers in Biomedical Applications · Advanced Sensor and Energy Harvesting Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Bioproducts and Biosystems, Aalto University, P.O. Box 16300, 00076 Espoo, Finland

Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland

VTT Technical Research Centre of Finland Ltd, VTT, PO Box 1000, FI-02044 Espoo, Finland

Department of Chemistry and Materials Science, Aalto University, Kemistintie 1, 02150 Espoo, Finland

Funding

European Commission · Academy of Finland · Foundation for Research of Natural Resources in Finland

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