2016
DOI: 10.1016/j.molliq.2016.08.103
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Impact of water on the charge transport of a glass-forming ionic liquid

Abstract: Using dielectric spectroscopy and differential scanning calorimetry, we have performed a detailed investigation of the influence of water uptake on the translational and reorientational glassy dynamics in the typical ionic liquid 1-Butyl-3-methylimidazolium chloride. From a careful analysis of the measured dielectric permittivity and conductivity spectra, we find a significant acceleration of cation reorientation and a marked increase of the ionic conductivity for higher water contents. The latter effect mainl… Show more

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Cited by 15 publications
(11 citation statements)
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References 105 publications
(158 reference statements)
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“…That means "as-printed" PLA is most likely a pure glass below 331 K. The subsequent cooling from the meltdown to ambient temperatures with a cooling rate of 10 K/min confirms the result of Cao et al [21] that this rate is enough to prevent crystallization of PLA. The values for these phase transitions, especially temperatures, agree well with the results from literature [21,27,29,30]. However, the glass transition temperature in literature varies about ±5 K, which most likely originates from the different stereoisomeric composition of (d,l)-lactide in PLA.…”
Section: Differential Scanning Calorimetry Of the Polymer Plasupporting
confidence: 87%
See 1 more Smart Citation
“…That means "as-printed" PLA is most likely a pure glass below 331 K. The subsequent cooling from the meltdown to ambient temperatures with a cooling rate of 10 K/min confirms the result of Cao et al [21] that this rate is enough to prevent crystallization of PLA. The values for these phase transitions, especially temperatures, agree well with the results from literature [21,27,29,30]. However, the glass transition temperature in literature varies about ±5 K, which most likely originates from the different stereoisomeric composition of (d,l)-lactide in PLA.…”
Section: Differential Scanning Calorimetry Of the Polymer Plasupporting
confidence: 87%
“…After total dilution of the PLA, trihexyl tetradecyl phosphonium decanoate (IoLiTec) was added and the mixture was stirred for 12 h. The THTDP DE itself was dried in advance for 24 h in vacuum to prevent impurities of residual water [27]. Thin plate-like samples of the PLA/IL mixture were synthesized using the solventcasting method on a Teflon plate.…”
Section: Raw Materials and Materialsmentioning
confidence: 99%
“…However, the measured transition temperatures of the samples with x = 0.25, 0.5 and 0.75 show a decrease of 7, 11 and 9 K with respect to a linear extrapolation between the glass-transition temperatures of the two constituents. We showed previously 27 that residual water has a huge impact on Tg of BMIM Cl. In the present case, the glass-transition temperature of BMIM Cl has a strong impact on the ideal-mixing line.…”
Section: Results and Discussion Differential Scanning Calorimetrymentioning
confidence: 89%
“…The samples were dried at about 373 K for at least 16 h inside a nitrogen gas cryostat until the dielectric properties reach time-dependent constant values (not shown). This is a typical sign for no further water removal 27 , suggesting stable conditions with low values of water impurities. Subsequently, the samples were measured in the same cryostat to avoid a reabsorption of water prior to the measurement.…”
Section: Dielectric Spectroscopymentioning
confidence: 86%
“…When BMIMCl was integrated into the composites, PLA‐MCC 100 IL and PLA‐CFF 100 IL only showed one T g . Essentially, the measurement was done from −60 °C to observe the glass‐transition temperature for BMIMCl which is well below 0 °C of about more or less at −50 °C (220–225 K) . In Figure , no peak was observed below 0 °C indicating that BMIMCl blends well with PLA, CFF, and MCC…”
Section: Resultsmentioning
confidence: 99%