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Table 1 Characteristic vibrations of PA66 and PA66 coated with Au NPs

From: Polyamide 66 microspheres metallised with in situ synthesised gold nanoparticles for a catalytic application

Characteristic groups	PA66 (cm^-1)	PA66 coated with Au NPs (cm^-1)
N-H Stretching vibration	3,298	3,396
N-H Bending vibration	686	684
C = O Stretching vibration	1,631	1,631
N-H Bending vibration	1,536	1,533
-CH₂- Stretching vibration	2,933	2,933

PA66, polyamide 66; Au NPs, gold nanoparticles.

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