Identification of Some Polymeric Materials by Low-Temperature Pyrolysis Mass Spectrometry

Abstract

The application of low-temperature pyrolysis mass spectrometry to the identification of some commercial and synthetic polymers using a direct insertion probe and electron ionization has been studied. The polymers were analyzed directly in the solid probe of a mass spectrometer within the ion source at 70 eV electron impact. The quadrupole mass spectrometer, equipped with gas chromatogram software and a library of low molecular weight compounds, was used to characterize the polymers by measuring the chemical structure of the repeat units and the end groups and to examine the thermal degradation pathways. The polymers investigated show different degradation pathways. Investigation of sequences and determination of the composition of co-polymers were studied. Total ion pyrogram and spectrum subtractions were used to separate and measure spectra of pyrolysis steps at distinctly different temperatures.

Keywords

identification polymers pyrolysis mass spectrometry

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References

Luderwald

, “Mass spectroscopy of synthetic polymers”, Pure Appl. Chem. 54(20), 255 (1982).

Qian

Killinger

W.E.

Casey

and Nicol

G.R.

, “Rapid polymer identification by in-source direct pyrolysis mass spectrometry and library searching techniques”, Anal. Chem. 68(6), 1019 (1996).

Vouros

and Wronka

J.W.

, “Polymer characterization using mass spectrometry”, in Modern methods of polymer characterization, Ed by Barth

H.G.

and Mays

J.W.

John Wiley & Sons, Chichester, UK (1991).

Montaudo

Puglisi

and Samperi

E.J.

, “Chemical reactions occurring in the thermal treatment of polymer blends investigated by direct pyrolysis mass spectrometry”, Polym. Sci. A: Polym. Chem. 31, 13 (1993).

Sanders

E.B.

Goldsmith

A.I.

Jeffrey

and Seeman

J.I.

, “A model that distinguishes the pyrolysis of D-glucose, D-fructose, and sucrose from that of cellulose”, J. Anal. Appl. Pyrol. 66, 29 (2003).

Banyasz

J.L.

Lyons-Hart

J.L.

and Shafer

K.H.

, “Cellulose pyrolysis: The kinetics of hydroxyacetaldehyde evolution”, J. Anal. Appl. Pyrol. 57, 223 (2001).

Shin

E.J.

Nimols

N.R.

and Evans

R.J.

, “Kinetic analysis of the gas-phase pyrolysis of carbohydrates”, Fuel 80, 1697 (2001).

Banyasz

J.L.

Lyons-Hart

J.L.

and Shafer

K.H.

, “Gas evolution and the mechanism of cellulose pyrolysis”, Fuel 80, 1757 (2001).

Banyasz

J.L.

Lyons-Hart

J.L.

and Shafer

K.H.

, “Realtime evolved gas analysis by FTIR method: An experimental study of cellulose pyrolysis”, Fuel 80, 1809 (2001).

10.

Franklin

W.E.

, “Direct pyrolysis of cellulose and cellulose derivatives in a mass spectrometer with a data system”, Anal. Chem. 51, 992 (1979).

11.

Leonard

Kulkarni

Brandes

Nelson

and Cameron

, “Synthesis and degradation of polyalkyl alpha-cyanoacrylates”, J. Appl. Polym. Sci. 10, 259 (1966).

12.

Toriumi

D.M.

Raslan

W.F.

Friedman

and Tardy

M.E.

“Histotoxicity of cyanoacrylate tissue adhesives. A comparative study”, Arch Otolaryngol–Head Neck Surg. 116(5), 546 (1990).

13.

Lattimer

R.P.

and Williams

R.C.

, “Low-temperature pyrolysis products from a polyether-based urethane”, J. Anal. Appl. Pyrol. 63, 85 (2002).

14.

Blazso

Varhegyi

and Jakab

, “Pyrolysis-gas Charomatography of styrene-acrylonitrile copolymers”, J. Anal. Appl. Pyrol. 2, 177 (1980).

15.

Surianaryanan

Vijayaraghavan

and Raghavan

K.V.

, “Spectroscopic investigation of polyacrylonitrile thermal degradation”, J. Polym. Sci. A: Polym. Chem. 36, 2503 (1998).

16.

Zoller

D.L.

and Johnston

M.V.

, “Composition and micro-structure of acrylonitrile-butadiene copolymers by pyrolysis photoionization mass spectrometry”, Anal. Chem. 69, 3791 (1997).

17.

Egawa

Kabay

Shuto

and Jyo

, “Preparation and Characterization of Lightly Crosslinked Highly Porous Chelating Resins Containing Amidoxime Groups”, J. Appl. Polym. Sci. 46, 129–142 (1992).