On-line monitoring of polymer melts using UV fiber optic spectroscopy

Susan J. Foulk; Keith L. Miller; Rinamarie Spatafore

doi:10.1117/12.166277

31 December 1993 On-line monitoring of polymer melts using UV fiber optic spectroscopy

Susan J. Foulk, Keith L. Miller, Rinamarie Spatafore

Author Affiliations +

Proceedings Volume 2069, Optical Methods for Chemical Process Control; (1993) https://doi.org/10.1117/12.166277
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

The addition of stabilizers such as hindered phenols, phosphites, hindered amines, and benzotriazoles to polyolefins provide protection from oxidation due to heat, light, or stress. The level of stabilizer in a polymer is related to polymer performance from the time of processing throughout the polymer's lifetime. As a result, measurement and control of the additive concentration that is melt compounded into the polymer is crucial. Making these measurements in the melt offers many advantages over current off line quality control methods such as GC and HPLC. This paper discusses the on-line method for monitoring the levels of hindered phenols and phosphites in polypropylene. This method is based on UV spectroscopy coupled with fiber optics. Data are presented to show the successful measurement of these additives even in the presence of potential interferants.

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Susan J. Foulk, Keith L. Miller, and Rinamarie Spatafore "On-line monitoring of polymer melts using UV fiber optic spectroscopy", Proc. SPIE 2069, Optical Methods for Chemical Process Control, (31 December 1993); https://doi.org/10.1117/12.166277

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