Table 1.
UHMWPE properties.
Fig 1.
Block diagram of spectral differentiating ad pre-processing adopted during this study.
Fig 2.
(a) & (b). FTIR spectra different sample of UHMPWPE.
Fig 3.
Simulated Fractional order and 1st order derivative plots from 940–960 cm-1 (A) 1700–1750 cm-1 (B) and 3300–3600 cm-1 (C) for P-0, 25, and 50 kGy irradiated samples.
Fig 4.
(I) ATIR-FTIR spectra of sample labelled as P-0 (A), after applying 1st order differential filter (B), and integrated of filtered curve for indemnification of peak positions (II) ATIR-FTIR spectra of sample labelled as P-25 (A), after applying 1st order differential filter (B), and integrated of filtered curve for indemnification of peak positions.
Fig 5.
ATIR-FTIR spectra of sample labelled as P-50 Experimental (A), after applying 1st order differential filter (B), and integrated of filtered curve for indemnification of peak positions.
Fig 6.
Dendrograms for grouping the samples on the basis of similarities in experimental spectra and filtered spectra with differential filter of 0.5th order for IR spectral region (A) 800–1100 cm-1, (B) 1680–1800 cm-1 and(C) 3300–3600 cm-1.
Fig 7.
(I) Coefficients of point-to-point correlations of experimental and simulated FD spectral data for (A) 800–1100 cm-1, (B) 1680–1800 cm-1 and (C) 3300–3600 cm-1. (II) Prncipal Component Anlsyis of experimental and simulated FD spectral data for (A) 800–1100 cm-1, (B) 1680–1800 cm-1 and (C) 3300–3600 cm-1. Note: These results of Fig 5 are only for P-0 Sample i.e. for un-irradiated UHMWPE sample.