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

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

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

Research output: Contribution to journal › Article › Scientific › peer-review

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.

Original language	English
Pages (from-to)	24-28
Journal	ACS Applied Polymer Materials
Volume	4
Issue number	1
DOIs	https://doi.org/10.1021/acsapm.1c01430
Publication status	Published - 14 Jan 2022
MoE publication type	A1 Journal article-refereed

Keywords

cellulose nanofibers
controlled water removal
ion conductivity
redispersion
thermoporosimetry

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10.1021/acsapm.1c01430Licence: CC BY

Cite this

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

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.",

keywords = "cellulose nanofibers, controlled water removal, ion conductivity, redispersion, thermoporosimetry",

author = "Valentina Guccini and Josphat Phiri and Jon Trifol and Ville Rissanen and Mousavi, {Seyede Maryam} and Jaana Vapaavuori and Tekla Tammelin and Thaddeus Maloney and Eero Kontturi",

note = "Funding Information: V.G. and E.K. would like to acknowledge the Academy of Finland (AoF) for the Financial support by the Project AlgaLEAF (Project 322755). V.R. and T.T. would like to acknowledge the European Union via the project FuturoLEAF (European Union?s Horizon 2020 research and innovation programme under grant agreement no. 899576). J.P. and T.M. would like to acknowledge the Foundation for Research of Natural Resources in Finland. M.M. and J.V. would like to acknowledge the European Commission for generous funding for the ModelCom project. J.T. would like to acknowledge the AoF?s Flagship Programme, Projects . 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). This work utilized facilities provided by the RawMatters Finland Infrastructure (RAMI) at Aalto University, supported by AoF, and the facilities and technical support of the OtaNano Nanomicroscopy Center (Aalto-NMC). ",

year = "2022",

month = jan,

day = "14",

doi = "10.1021/acsapm.1c01430",

language = "English",

volume = "4",

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journal = "ACS Applied Polymer Materials",

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publisher = "American Chemical Society ACS",

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Tuning the Porosity, Water Interaction, and Redispersion of Nanocellulose Hydrogels by Osmotic Dehydration. / Guccini, Valentina (Corresponding Author); Phiri, Josphat; Trifol, Jon; Rissanen, Ville; Mousavi, Seyede Maryam; Vapaavuori, Jaana; Tammelin, Tekla; Maloney, Thaddeus; Kontturi, Eero (Corresponding Author).

In: ACS Applied Polymer Materials, Vol. 4, No. 1, 14.01.2022, p. 24-28.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Tuning the Porosity, Water Interaction, and Redispersion of Nanocellulose Hydrogels by Osmotic Dehydration

AU - Guccini, Valentina

AU - Phiri, Josphat

AU - Trifol, Jon

AU - Rissanen, Ville

AU - Mousavi, Seyede Maryam

AU - Vapaavuori, Jaana

AU - Tammelin, Tekla

AU - Maloney, Thaddeus

AU - Kontturi, Eero

N1 - Funding Information: V.G. and E.K. would like to acknowledge the Academy of Finland (AoF) for the Financial support by the Project AlgaLEAF (Project 322755). V.R. and T.T. would like to acknowledge the European Union via the project FuturoLEAF (European Union?s Horizon 2020 research and innovation programme under grant agreement no. 899576). J.P. and T.M. would like to acknowledge the Foundation for Research of Natural Resources in Finland. M.M. and J.V. would like to acknowledge the European Commission for generous funding for the ModelCom project. J.T. would like to acknowledge the AoF?s Flagship Programme, Projects . 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). This work utilized facilities provided by the RawMatters Finland Infrastructure (RAMI) at Aalto University, supported by AoF, and the facilities and technical support of the OtaNano Nanomicroscopy Center (Aalto-NMC).

PY - 2022/1/14

Y1 - 2022/1/14

N2 - 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.

AB - 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.

KW - cellulose nanofibers

KW - controlled water removal

KW - ion conductivity

KW - redispersion

KW - thermoporosimetry

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U2 - 10.1021/acsapm.1c01430

DO - 10.1021/acsapm.1c01430

M3 - Article

AN - SCOPUS:85122560443

VL - 4

SP - 24

EP - 28

JO - ACS Applied Polymer Materials

JF - ACS Applied Polymer Materials

SN - 2637-6105

IS - 1

ER -

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

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Keywords

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