Ethylene Vinyl Acetate Infrared Spectrum

Vibrational spectroscopy was found to be a suitable method for the determination of the degree of cross linking of ethylene vinyl acetate eva polymers.

Ethylene vinyl acetate infrared spectrum.

Infrared spectroscopy is used to determine the vinyl acetate incorporation into eva copolymers using the ratio between the characteristic band of acetoxy group and ethylene sequences. Compound ethylene vinyl acetate copolymer with free spectra. Xtxrwkrvritetp uhfffaoysa n cas registry number. The a 3460 a 3610 ratio was used for the quantitative analysis.

Attenuated total reflectance infrared atr ir spectrum of ethylene vinyl acetate copolymer with properties. Polymer testing 1999 18 7 551 557. Conclusion from the aforementioned examples it is evident that raman spectroscopy is a powerful technique for polymer analysis both in laboratory settings and on the process line. Among the several different absorption ratios proposed in literature the intensities ratio i 610 i 2680 c o ch 2 was chosen to evaluate the amount of.

Direct determination of vinyl acetate content of ethylene vinyl acetate copolymers in thick films by infrared spectroscopy. Ethylene vinyl acetate eva also known as poly ethylene vinyl acetate peva is the copolymer of ethylene and vinyl acetate the weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene. Acetic acid vinyl ester. 5 nmr 6 ftir and 2 raman.

Raman spectra of ethylene vinyl acetate copolymers. Spectral changes in the raman spectra of eva with increasing lamination time which equals increasing degree of cross linking were mainly detected in the ch vibrational regions namely in. There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.