Several years ago I compiled a photometrically accurate 6 cm^-1 resolution spectral library of 18 common extrudable polymer resins.  The unusual feature of this library is that each spectrum is a collage of several spectra of different thicknesses of the resin, normalized to produce a single photometrically accurate spectrum of the polymer with a linear photometric range over about 5 orders of absorbance magnitude.  The "absorbance scale" is calculated for a 50 µm thickness, even though multiple resin thicknesses from several millimeters down to a few micrometers were measured for each resin.  Index-matching was used to minimize Christensen contributions to the thinnest samples.  When needed (e.g., paper), index matching and a successive-approximation approach were used to approximately null scattering contributions to the absorbance value.  The best and most typical examples available of each polymer were selected, but in most cases the exact source of the resin cannot be revealed.  The spectra are presented both in JCAMP format and in Galactic .spc format.
 

EVA	JCAMP	.spc
EVOH_HI	JCAMP	.spc
EVOH_LO	JCAMP	.spc
EVOH_STD	JCAMP	.spc
KAP	JCAMP	.spc
MAE	JCAMP	.spc
PA	JCAMP	.spc
PAPER	JCAMP	.spc
PC	JCAMP	.spc
PE	JCAMP	.spc
PET	JCAMP	.spc
PMMA	JCAMP	.spc
PP	JCAMP	.spc
PS	JCAMP	.spc
PTFE	JCAMP	.spc
PVC	JCAMP	.spc
PVDC	JCAMP	.spc
SUR	JCAMP	.spc

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