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In Situ Modification of Regenerated Cellulose Beads: Creating All-Cellulose Composites
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0003-1926-2193
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology.ORCID iD: 0000-0002-7410-0333
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0001-8622-0386
2020 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 59, no 7, p. 2968-2976Article in journal (Refereed) Published
Abstract [en]

Developing more sustainable products requires innovative ways to utilize and modify renewable resources. Here, a simple one-step in situ modification of regenerated cellulose beads using cellulose nanocrystals (CNC) and dropwise precipitation of cellulose/N,N-dimethylacetamide and lithium chloride (DMAc/LiCI) solution is presented. A more condensed internal structure and increased surface roughness were observed when higher CNC concentrations were used in the precipitation media. Incorporation of CNCs significantly reduces the water holding capacity of the beads and simultaneously impacts the kinetics of drying. Beads modified using the highest CNC concentration (0.5 wt %) exhibited a reduction in the Young modulus by more than 20% and an increase in compressibility to failure by 10% compared with native beads. Overall, inclusion of nanoparticles during bead formation is a simple method that can tune the mechanical, structural, and swelling/drying behavior of cellulose beads and broaden their potential for different end-use applications such as separations and controlled release.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2020. Vol. 59, no 7, p. 2968-2976
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Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-271717DOI: 10.1021/acs.iecr.9b06273ISI: 000515213800032Scopus ID: 2-s2.0-85080933348OAI: oai:DiVA.org:kth-271717DiVA, id: diva2:1422744
Note

QC 20200408

Available from: 2020-04-08 Created: 2020-04-08 Last updated: 2020-04-08Bibliographically approved

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Mystek, KatarzynaReid, Michael S.Larsson, Per A.Wågberg, Lars
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