Antiplasticizing effect of triethyl citrate on an isosorbide-based polycarbonate

The effects of triethyl citrate (TEC) on the viscoelastic properties of a copolycarbonate comprising isosorbide and 1,4-cyclohexanedimethanol (ISB-PC) were studied in both the molten and solid states. TEC acted as an antiplasticizer for ISB-PC and increased its modulus in the glassy state, as demons...

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Bibliographic Details
Published inJournal of polymer research Vol. 31; no. 8
Main Authors Han, Ruiqi, Kida, Takumitsu, Yamaguchi, Masayuki
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.08.2024
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Fractions
Industrial Chemistry/Chemical Engineering
Moisture content
Original Paper
Polymer blends
Polymer Sciences
Shear viscosity
Rheological property
Biodegradable plasticizer
Isosorbide
Polycarbonate
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Summary:The effects of triethyl citrate (TEC) on the viscoelastic properties of a copolycarbonate comprising isosorbide and 1,4-cyclohexanedimethanol (ISB-PC) were studied in both the molten and solid states. TEC acted as an antiplasticizer for ISB-PC and increased its modulus in the glassy state, as demonstrated in blends comprising 5 and 10 wt% TEC. Because antiplasticization reduces the free volume fraction, the water content of the copolycarbonate films, which is known to affect various properties, decreased following the addition of TEC. Furthermore, TEC greatly decreased the zero-shear viscosity. The experimental values were much lower than those predicted by the Berry–Fox formula. In other words, a small amount of TEC greatly enhances the flowability of ISB-PC.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-024-04059-4