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Similar to FTIR Quantitation of Dimethicone in Lotion Formulations
Similar to FTIR Quantitation of Dimethicone in Lotion Formulations (20)
FTIR Quantitation of Dimethicone in Lotion Formulations
- 1. Polydimethylsiloxane Determination in Lotionized Formulations Using Quantitative FTIR Part 1: Linearity Studies Luke Shokere, Ph.D.
- 5. Table 1. Sample preparation. 1.80 3928 72 120 1.65 3934 66 110 1.50 3940 60 100 1.35 3946 54 90 1.20 3952 48 80 0 4000 0 0 Dimethicone Placebo Dimethicone Sx wt. % wt. mg mg % Normal
- 6. Figure 1a. FTIR spectral results for the 1260cm -1 peak. Blue 120%; Red 110%; Black 100%; Brown 90%; Green 80%; Black, Placebo (no peak).
- 7. Figure 1b . Method of peak integration at 1260cm-1 . The signature peak that corresponds to the H 3 C-Si bond vibration (stretching action) is integrated. Smaller peak on right shoulder is the H 3 C bond vibration of the Hexane solvent.
- 8. Figure 2. Linearity plot.
- 9. Table 2. Peak integration absorbance results 0.1922 120 0.1706 110 0.1516 100 0.1302 90 0.1077 80 0.0000 0.0 Absorbance Dimethicone FTIR % Normal