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Effect of solvent type on the dispersion quality of spray-and freeze-dried CNCs in PLA through rheological analysis.
Carbohydr Polym. 2021 Sep 15; 268:118243.CP

Abstract

Polylactide (PLA) nanocomposites with spray-and freeze-dried cellulose nanocrystals (i.e., SCNC and FCNC) were prepared through solution casting using four different solvents: tetrahydrofuran (THF), chloroform (CHL), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO). Small amplitude oscillatory shear rheological analysis was extensively employed to explore the CNC dispersion quality in PLA. Overall, the rheological properties differences of PLA/SCNC and PLA/FCNC nanocomposites were not very significant. Moreover, the use of THF and CHL did not lead to a proper dispersion of CNCs in PLA due to their low dielectric constants. On the other hand, while the use of DMF was effective on the enhancement of CNC dispersion, DMSO could more dramatically lead to such enhancement due to its higher dielectric constant. The percolation threshold in PLA/SCNC nanocomposites prepared with DMF and DMSO was predicted around 1.52 and 0.12 wt% CNC, respectively. The crystallization behavior of PLA/nanocomposites prepared with DMF and DMSO were also explored.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Özdemir B
Metallurgical and Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
Nofar M
Metallurgical and Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak, Istanbul 34469, Turkey; Polymer Science and Technology Program, Institute of Science and Technology, Istanbul Technical University, Maslak, Istanbul 34469, Turkey. Electronic address: nofar@itu.edu.tr.

MeSH

CelluloseChloroformColorCrystallizationDimethyl SulfoxideDimethylformamideFreeze DryingFuransNanocompositesNanoparticlesPolyestersRheologySolventsViscosity

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34127223

Citation

Özdemir, Burcu, and Mohammadreza Nofar. "Effect of Solvent Type On the Dispersion Quality of Spray-and Freeze-dried CNCs in PLA Through Rheological Analysis." Carbohydrate Polymers, vol. 268, 2021, p. 118243.
Özdemir B, Nofar M. Effect of solvent type on the dispersion quality of spray-and freeze-dried CNCs in PLA through rheological analysis. Carbohydr Polym. 2021;268:118243.
Özdemir, B., & Nofar, M. (2021). Effect of solvent type on the dispersion quality of spray-and freeze-dried CNCs in PLA through rheological analysis. Carbohydrate Polymers, 268, 118243. https://doi.org/10.1016/j.carbpol.2021.118243
Özdemir B, Nofar M. Effect of Solvent Type On the Dispersion Quality of Spray-and Freeze-dried CNCs in PLA Through Rheological Analysis. Carbohydr Polym. 2021 Sep 15;268:118243. PubMed PMID: 34127223.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of solvent type on the dispersion quality of spray-and freeze-dried CNCs in PLA through rheological analysis. AU - Özdemir,Burcu, AU - Nofar,Mohammadreza, Y1 - 2021/05/25/ PY - 2021/02/16/received PY - 2021/04/15/revised PY - 2021/05/19/accepted PY - 2021/6/15/entrez PY - 2021/6/16/pubmed PY - 2021/10/21/medline KW - Cellulose nanocrystal KW - Nanocomposite KW - Polylactide KW - Rheological properties KW - Solvent SP - 118243 EP - 118243 JF - Carbohydrate polymers JO - Carbohydr Polym VL - 268 N2 - Polylactide (PLA) nanocomposites with spray-and freeze-dried cellulose nanocrystals (i.e., SCNC and FCNC) were prepared through solution casting using four different solvents: tetrahydrofuran (THF), chloroform (CHL), dimethylformamide (DMF), and dimethyl sulfoxide (DMSO). Small amplitude oscillatory shear rheological analysis was extensively employed to explore the CNC dispersion quality in PLA. Overall, the rheological properties differences of PLA/SCNC and PLA/FCNC nanocomposites were not very significant. Moreover, the use of THF and CHL did not lead to a proper dispersion of CNCs in PLA due to their low dielectric constants. On the other hand, while the use of DMF was effective on the enhancement of CNC dispersion, DMSO could more dramatically lead to such enhancement due to its higher dielectric constant. The percolation threshold in PLA/SCNC nanocomposites prepared with DMF and DMSO was predicted around 1.52 and 0.12 wt% CNC, respectively. The crystallization behavior of PLA/nanocomposites prepared with DMF and DMSO were also explored. SN - 1879-1344 UR - https://www.unboundmedicine.com/medline/citation/34127223/Effect_of_solvent_type_on_the_dispersion_quality_of_spray_and_freeze_dried_CNCs_in_PLA_through_rheological_analysis_ DB - PRIME DP - Unbound Medicine ER -