Ethylene Vinyl Acetate Ir Spectrum

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

Ethylene vinyl acetate ir spectrum.

This structure is also available as a 2d mol file or as a computed 3d sd file the 3d structure may be viewed using java or javascript. Acetic acid vinyl ester. Electromagnetic spectrum and infrared radiation. The a 3460 a 3610 ratio was used for the quantitative analysis.

The results show that as the pvac increases in the evac copolymer the. 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. It can be seen that the greater the content of vinyl acetate the greater the intensity of the c o peak in the 1 740cm 1 region. Summarized in table 1 below is the elemental analysis of the carbon and hydrogen for a series of evac copolymers having different amounts of poly vinyl acetate content ranging from 9 to 70 pvac.

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. Attenuated total reflectance infrared atr ir spectrum of ethylene vinyl acetate copolymer with properties. The technique is simple quick and does not require a complicated sample preparation procedure. Polyethylene pe and poly ethyl vinyl acetate eva.

Analysis of ethylene vinyl acetate eva tga ft ir the 3 d plot shows a tga ft ir measurement on an eva sample between 25 c and 600 c. 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. Measurement of samples with vinyl acetate contents of 0 5 and 7 using a horizontal atr system. Experimental study for the ethylene vinyl acetate evac copolymers 3 1 1.

Xtxrwkrvritetp uhfffaoysa n cas registry number. Ethylene monomer ethylene acetate. Direct determination of vinyl acetate content of ethylene vinyl acetate copolymers in thick films by infrared spectroscopy. An infrared spectroscopic method was developed for the determination of vinyl acetate content in thick films of ethylene vinyl acetate copolymers.

Polymer testing 1999 18 7 551 557. 2 the chemical structure of eva is presented.