Ethylene Vinyl Acetate Infrared Spectrum

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Ethylene vinyl acetate infrared spectrum.

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. Compound ethylene vinyl acetate copolymer with free spectra. The technique is simple quick and does not require a complicated sample preparation procedure. An infrared spectroscopic method was developed for the determination of vinyl acetate content in thick films of ethylene vinyl acetate copolymers.

Raman spectra of ethylene vinyl acetate copolymers. 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 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. There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used.

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. 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. Direct determination of vinyl acetate content of ethylene vinyl acetate copolymers in thick films by infrared spectroscopy.

Xtxrwkrvritetp uhfffaoysa n cas registry number. Polymer testing 1999 18 7 551 557. 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.