Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Surprising Insensitivity of Homogeneous Acetylation of Cellulose Dissolved in Triethyl(n-octyl)ammonium Chloride/Molecular Solvent on the Solvent Polarity
Friedrich Schiller University Jena, Germany.
RISE - Research Institutes of Sweden (2017-2019), Material och produktion, IVF.ORCID-id: 0000-0003-2893-8554
University of Sao Paulo, Brazil.
University of Sao Paulo, Brazil.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 303, nr 5Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The homogeneous acetylation of microcrystalline cellulose (MCC) by acetyl chloride and acetic anhydride in triethyl(n-octyl)ammonium chloride (N2228Cl)/molecular solvents (MSs) is investigated. The reaction with both acylating agents shows the expected increase of the degree of substitution (DS) on reaction temperature and time. Under comparable reaction conditions, however, DS is surprisingly little dependent on the MS employed, although the MSs differ in empirical polarity by 7 kcal mol−1 as calculated by use of solvatochromic probes. The empirical polarities of (MCC + N2228Cl + MS) differ only by 0.8 kcal mol−1. The formation a polar electrolyte sheath around cellulose chains presumably contributes to this “leveling-off” of the dependence DS on the polarity of the parent MS employed. N2228Cl recovery and recycling is feasible. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

sted, utgiver, år, opplag, sider
Wiley-VCH Verlag , 2018. Vol. 303, nr 5
Emneord [en]
Acetylation; Cellulose; Chlorine compounds; Electrolytes; Recycling, Ammonium chloride; Cellulose acetates; Degree of substitution; Microcrystalline cellulose; Reaction conditions; Reaction temperature; Solvatochromic probes; Solvent polarity, Solvents, Acetylation; Ammonium Chloride; Cellulose; Chlorine Compounds; Electrolytes; Recycling
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-34199DOI: 10.1002/mame.201800032Scopus ID: 2-s2.0-85046902251OAI: oai:DiVA.org:ri-34199DiVA, id: diva2:1233123
Tilgjengelig fra: 2018-07-16 Laget: 2018-07-16 Sist oppdatert: 2024-01-17bibliografisk kontrollert

Open Access i DiVA

fulltext(473 kB)298 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 473 kBChecksum SHA-512
a7e9cf6a0326e27aaeac78aaa743e58b883374cfacb7a7192070133af06d514709d909f391be3d637a14233f2cc9a558824908c828ba3b19d77bda80ccee8439
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekstScopus

Person

Jedvert, Kerstin

Søk i DiVA

Av forfatter/redaktør
Jedvert, Kerstin
Av organisasjonen
I samme tidsskrift
Macromolecular materials and engineering

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 299 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 405 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
v. 2.43.0