Controlled molecular reorientation enables strong cellulose fibers regenerated from ionic liquid solutions

Sundberg, Johan; Guccini, Valentina; Håkansson, Karl; Salazar-Alvarez, Germán; Toríz, Guillermo; Gatenholm, Paul

doi:10.1016/j.polymer.2015.08.035

Cited by 8 publications

(1 citation statement)

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“…Chemically, ionic liquids are made of an organic cation and smaller, organic or inorganic anion [5], and the most interesting are the properties of room temperature ionic liquids (RTILs) [9]. The ability to dissolve cellulose in ionic liquids allows for a relatively simple processing of this polymer to obtain fibers [10][11][12][13][14][15][16], nanofibers [17][18][19] cellulose particles [20], cellulose gels and aerogels [21][22][23][24], flocs [25] and membranes.…”

Section: Introductionmentioning

confidence: 99%

Properties and Structure of Cellulosic Membranes Obtained from Solutions in Ionic Liquids Coagulated in Primary Alcohols

Fryczkowska

Kowalska

Biniaś

et al. 2018

Autex Research Journal

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This paper presents the results of studies on the preparation of cellulosic membranes, from a solution in 1-ethyl-3- methylimidazolium acetate (EMIMAc), using the phase inversion method. Initially, the membranes were obtained by coagulation of the polymer film in water and primary alcohols (methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol), 1-hexanol, 1-octanol) resulting in membranes with significantly differing morphologies. Subsequently, composite membranes were produced, with the support layer being a membrane with the largest pores, and the skin layer a membrane with smaller pores. The resulting membranes were tested for physicochemical and transport properties. The morphology of the membrane surfaces and their cross-sections were investigated by using a scanning electron microscope (SEM). The structure of the membranes, on the other hand, was investigated by FTIR spectroscopy and WAXS structural analysis.

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