Table 1 Assignments of NIR spectroscopic bands of EVAC.

From: Fast quantifying collision strength index of ethylene-vinyl acetate copolymer coverings on the fields based on near infrared hyperspectral imaging techniques

Assignments

Bands

Features

1000

O-C=O deformation

due to acetate

1016

C-C streching of >HC-CH2

due to vinyl

1060

asymmetric C-C stretching

due to all-trans-(CH2)-n

1080

asymmetric C-C stretching

amorphous(trans and gauche)

1170

CH2 rocking

crystalline

1220

CH2 twisting

amorphous

1330

CH2 wagging

amorphous

1410

CH2 bending

crystalline

1430

CH3 asymmetric bending

due to acetate

1435

CH2 bending

anisotropic

1450

2 × CH2 rocking

due to all-trans-(CH2)-n

1550

2 × CH2 rocking

due to all-trans-(CH2)-n

1680

C=O stretching

due to acetate

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