Publication detail

Laser-Induced Breakdown Spectroscopy analysis used for polymer discrimination in inert atmosphere

CHAMRADOVÁ, I. POŘÍZKA, P. KAISER, J.

Original Title

Laser-Induced Breakdown Spectroscopy analysis used for polymer discrimination in inert atmosphere

Type

abstract

Language

English

Original Abstract

This work deals with the discrimination of commercial polymers having various composition and molecular structure. We chose aliphatic (polypropylene, polyamide-66, polyoxymethylene) and aromatic (polystyrene, acrylonitrile-butadiene-styrene) polymers with/without heterogeneous atoms (nitrogen and oxygen) in their backbone structure. The emission spectra of all examined polymers are exceedingly similar; they exhibit a characteristic atomic/ionic emission lines from four biogenic elements (carbon, hydrogen, nitrogen and oxygen) and specific molecular emission bands. There are two sources of molecular bands - native bonds and bonds created from an interaction of plasma with buffers gas molecules. We try to clarify a correlation between the polymer structure and signal responses. In order to achieve this, we focused on intensities of spectral molecular bands such as carbon dimer (C2 Swan system at 516.5 nm) and cyano (CN band at 338.3 nm) bands[1,2]. For this reason, we studied structurally different polymer samples using LIBS in various atmospheres and examined the influence on signal response.

Keywords

Laser-Induced Breakdown Spectroscopy (LIBS), polymers, inert atmospheres, diatomic species, molecular bands, chemometrics, principal component analysis (PCA)

Authors

CHAMRADOVÁ, I.; POŘÍZKA, P.; KAISER, J.

Released

20. 9. 2020

Location

Kyoto, Japan

BibTex

@misc{BUT165585,
  author="Ivana {Chamradová} and Pavel {Pořízka} and Jozef {Kaiser}",
  title="Laser-Induced Breakdown Spectroscopy analysis used for polymer discrimination in inert atmosphere",
  year="2020",
  address="Kyoto, Japan",
  note="abstract"
}