FT-IR and FT-Raman spectra of 2-hydroxyethyl methacrylate – A conformational and vibrational analysis

In-situ imidization analysis in microscale thin films of an ester-type photosensitive polyimide for microelectronic packaging applications

“…In addition, the precursor FT-IR spectrum shows the typical bands of the HEMA crosslinking group. The band assignments are in good agreement with literature data [47]. In Fig.…”

Spectral normalisation by error minimisation for prediction of conversion in solvent-free catalytic chain transfer polymerisations

“…S4, ESI †). 30 Similar effects were observed when normalising between 950-1050 cm À1 , where the model for MMA had low error but models for other monomers were not so accurate. For both the individual and combined models, normalisation around the peaks due to methyl and methylene scissoring modes at 1440 cm À1 resulted in low RMSECV values.…”

Low‐Dielectric Constant and Low‐Temperature Curable Polyimide/POSS Nanocomposites

“…Besides, there are two new absorption bands of 1776 and 1378 cm −1 , which gradually increase with the cyclization process. In fact, they are the characteristic absorption bands of polyimide: 1776 cm −1 is the in‐phase (or symmetric) stretching vibration of two carbonyl groups on a five‐membered imine ring, also known as imide I band; 1378 cm −1 is CN stretching vibration in polyimide, also known as imide II band, these results indicate that the imidization can be accomplished at about 200 °C by adding a low temperature curing accelerator. Additionally, the strongest absorption at 1500 cm −1 is the ring stretching vibration of the benzene ring in the aryl ether, which shows almost the same intensity during the cyclization process.…”