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Applications of infrared spectroscopy to customer problems in the vinyl industry
Author(s) -
Garcia Dana
Publication year - 1997
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10178
Subject(s) - infrared spectroscopy , stabilizer (aeronautics) , materials science , fourier transform infrared spectroscopy , polymer , process engineering , raw material , bottle , infrared , sample preparation , spectroscopy , polymer science , chemical engineering , organic chemistry , composite material , chemistry , mechanical engineering , chromatography , engineering , optics , physics , quantum mechanics
Identifying polymers, additives and contaminants presents unique challenges. Fourier transform infrared spectroscopy (FT‐IR) coupled with spectral searching techniques is a very efficient and powerful methodology to answer most identification questions. It is based on the unique IR spectrum characteristic of each compound. This paper outlines procedures employed in the identification of typical PVC formulations, starting with the resin and proceeding to impact modifier, process aids, lubricants, stabilizer system and fillers. The emphasis is on FT‐IR microscopy as the most versatile approach requiring small samples and minimal to no sample preparation. Other commonly used FT‐IR techniques are also outlined. Wet separation protocols, applicability and limitations as related to FT‐IR analysis are discussed. Typical examples include vinyl siding, packaging and bottle formulations as well as contaminants often encountered in these formulations and raw materials.