Transport of Propylene Carbonate-LiTFSI Electrolytes in P
The time-resolved attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy is employed to investigate the transport mechanism of gel electrolytes by monitoring the diffusion behavior of propylene carbonate-lithium bis (trifluoromethylsulfonyl)imide (PC-LiTFSI) solution through poly (vinylidene fluoride- co
Plasticiser loss from plastic or rubber products through diffusion and
The migration of plasticiser from polymers to a gas phase is a two-step process that includes diffusion from the polymer bulk to the surface followed by evaporation from the surface to the...
Characterization of Solute Diffusion in a Polymer Using ATR-FTIR
Investigation of the permeation of model formulations and a commercial ibuprofen formulation in Carbosil and human skin using ATR-FTIR and multivariate spectral analysis. International Journal of Pharmaceutics 2009, 374 (1-2) , 17-25.
ATR-FTIR investigations of plasticizer diffusion in polymers
An attenuated total reflectance FTIR (ATR-FTIR) technique has been developed for measuring the diffusion coefficients of liquids in polymer films. Data is being obtained for diffusion of plasticizers in nitrocellulose (NC), cellulose acetate butyrate (CAB), and NC/CAB mixtures. Publication:
Volume Table of Contents - SPIE Digital Library
ATR-FTIR investigations of plasticizer diffusion in polymers C. S. Miser , Kevin L. McNesby , Rose A. Pesce-Rodriguez , Robert A. Fifer
- What is ATR FTIR spectra?
- The ATR-FTIR spectra of oNPOE, PVC, dry and wet membrane. As mentioned above, ATR-FTIR imaging is the measurement of a large number of spatially resolved FTIR spectra in ATR mode that are acquired simultaneously. Each of the measured spectra provides absorbance for each pixel in the spectroscopic image obtained with the FPA detector.
- Does in situ ATR-FTIR imaging show water enriched membranes?
- In situ ATR-FTIR imaging clearly shows that the surface layers of the membranes are enriched with water, but towards the bulk of the membranes, the water concentration decreases. Thus, in situ ATR-FTIR imaging confirms the data reported earlier [ , , , , , , ].
- Can Fickian-based FTIR-ATR model be used to design ATR apparatus?
- External schematic of entire ATR setup The development of a Fickian-based FTIR-ATR model and its application to the designing of the ATR apparatus has been discussed in the previous section. Prior to any quantitative experimentation, accurate values for optical constants and depth of penetration, dp, must be evaluated.
- Can ATR-FTIR spectroscopic imaging be used to explore membrane features?
- In the wider sense, this study demonstrates the power of ATR-FTIR spectroscopic imaging for in-situ exploring membrane features. EVS: UV-vis measurements and discussion; HL: ATR-FTIR measurements and discussion; GAK: preparation of membranes, ISEs and solutions, technical assistance; KNM and SGK: conceptualization, supervision, writing.
- What is ATR-diffusion analysis in polymer-polymer interphase?
- ATR-diffusion analysis is also applied in the area of polymer-polymer interdiffusion. McKnight and Gillespie49 have studied the diffusion of water into a polypropylene-silane interphase. A double layer consisting of a 0.5 mm thick silane primer and a 100 mm thick PP was cast onto an IRE.
- What are the FTIR-ATR results of the polymer-penetrant systems?
- The results obtained from the FTIR-ATR studies on the polymer-penetrant systems will be discussed below. An ATR spectrum for the neat R/flex polymer adhesive is shown (Figure 4-17). The characteristic amide peaks seen in this spectrum are: the amide I band at ~1640 cm-1 (6.10m), resulting from the C=0 stretching of the polyamide linkage.
