eprintid: 8711
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/87/11
datestamp: 2023-11-09 16:20:37
lastmod: 2023-11-09 16:20:37
status_changed: 2023-11-09 16:13:20
type: article
metadata_visibility: show
creators_name: Toledo Hijo, A.A.C.
creators_name: Maximo, G.J.
creators_name: Costa, M.C.
creators_name: Cunha, R.L.
creators_name: Pereira, J.F.B.
creators_name: Kurnia, K.A.
creators_name: Batista, E.A.C.
creators_name: Meirelles, A.J.A.
title: Phase Behavior and Physical Properties of New Biobased Ionic Liquid Crystals
ispublished: pub
keywords: Ionic liquids; Liquid crystals; Liquids; Non Newtonian flow; Physical properties; Unsaturated fatty acids, Bio-based process; Critical micellar concentrations; High viscosities; Liquid thermodynamics; Protic ionic liquids; Renewable compound; Rheological profiles; Self-assembling ability, Fatty acids
note: cited By 38
abstract: Protic ionic liquids (PILs) have emerged as promising compounds and attracted the interest of the industry and the academy community, due to their easy preparation and unique properties. In the context of green chemistry, the use of biocompounds, such as fatty acids, for their synthesis could disclose a possible alternative way to produce ILs with a low or nontoxic effect and, consequently, expanding their applicability in biobased processes or in the development of bioproducts. This work addressed efforts to a better comprehension of the complex solid-liquid crystal-liquid thermodynamic equilibrium of 20 new PILs synthesized by using fatty acids commonly found in vegetable oils, as well as their rheological profile and self-assembling ability. The work revealed that their phase equilibrium and physical properties are significantly impacted by the structure of the ions used for their synthesis. The use of unsaturated fatty acids and bis(2-hydroxyethyl)ammonium for the synthesis of these biobased ILs led to a drastic decreasing of their melting temperatures. Also, the longest alkyl chain fatty acids promoted higher self-assembling and more stable mesophases. Besides their sustainable appeal, the marked high viscosity, non-Newtonian profile, and very low critical micellar concentration values of the PIL crystals here disclosed make them interesting renewable compounds with potential applications as emulsifiers, stabilizers, thickeners, or biolubricants. © 2017 American Chemical Society.
date: 2017
publisher: American Chemical Society
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019989035&doi=10.1021%2facs.jpcb.7b01384&partnerID=40&md5=3a79a98e2f85b4a7e36939a3556fe7fb
id_number: 10.1021/acs.jpcb.7b01384
full_text_status: none
publication: Journal of Physical Chemistry B
volume: 121
number: 14
pagerange: 3177-3189
refereed: TRUE
issn: 15206106
citation:   Toledo Hijo, A.A.C. and Maximo, G.J. and Costa, M.C. and Cunha, R.L. and Pereira, J.F.B. and Kurnia, K.A. and Batista, E.A.C. and Meirelles, A.J.A.  (2017) Phase Behavior and Physical Properties of New Biobased Ionic Liquid Crystals.  Journal of Physical Chemistry B, 121 (14).  pp. 3177-3189.  ISSN 15206106