Stabilizing poly(vinyl chloride) using its blends with poly(methyl methacarylate): pyrolysis GC/MS studies

Fakhreia Al-Sagheer; Zahoor Ahmad

doi:10.1016/j.jhazmat.2014.06.024

Stabilizing poly(vinyl chloride) using its blends with poly(methyl methacarylate): pyrolysis GC/MS studies

J Hazard Mater. 2014 Aug 15:278:584-91. doi: 10.1016/j.jhazmat.2014.06.024. Epub 2014 Jun 21.

Authors

Fakhreia Al-Sagheer¹, Zahoor Ahmad²

Affiliations

¹ Department of Chemistry, Kuwait University, Faculty of Science, P.O. Box 5969, Safat 13060 Kuwait. Electronic address: f.alsagheer@ku.edu.kw.
² Department of Chemistry, Kuwait University, Faculty of Science, P.O. Box 5969, Safat 13060 Kuwait.

PMID: 25019576
DOI: 10.1016/j.jhazmat.2014.06.024

Abstract

Binary blends of poly(vinyl chloride) (PVC) with poly(methyl methacarylate) (PMMA) of various compositions were prepared through solution blending. Thermogravimetric and pyrolysis studies of these blends were carried out and the volatile products were separated and quantitatively analyzed by GC/MS. Harmful pyrolysis products from PVC like HCl and different aromatic hydrocarbons are significantly suppressed in presence of a small amount of PMMA. The stabilization effect on PVC was found to be the most significant with 10 wt.%. PMMA contents in the matrix. Mechanism of the stabilization has been explained by the interaction of micro- and macro-radicals resulting from PMMA with PVC, which stabilize the unzipping of polymer chains by a reversible blocking mechanism and increase the amount of cross-linked residue retained above 500 °C.

Keywords: Blends; GC/MS; PMMA; PVC; Pyrolysis.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Construction Materials
Fires
Gas Chromatography-Mass Spectrometry
Hot Temperature
Polymethyl Methacrylate / chemistry*
Polyvinyl Chloride / chemistry*
Thermogravimetry

Substances

Polyvinyl Chloride
Polymethyl Methacrylate