Real-time monitoring of fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene film (1).: An article from: Polymer Engineering and Science
Book Details
Author(s)Anthony J. Bur, Steven C. Roth
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00082PBSG
ISBN-13978B00082PBS6
MarketplaceFrance 🇫🇷
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on April 1, 2004. The length of the article is 4976 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.
From the author: An optical sensor based on fiber optics has been developed to measure fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene films. The sensor, containing optical fibers, polarizing elements and lenses, was mounted above the polypropylene film as it was processed in a tenter frame oven stretching machine. Fluorescence observations were made using the fluorescent dye, bis (di-tert butylphenyl) perylenedicarboximide (BTBP), which was doped into the resin at very low concentrations. To monitor biaxial stretching, fluorescence anisotropy measurements were carried out with light polarized in the machine and the transverse directions corresponding to the directions of biaxial stretching. Fluorescence based temperature measurements were obtained from the ratio of fluorescence intensities at 544 nm and 577 nm. A matrix of experiments involving three levels of stretch ratio in both the machine and transverse directions was undertaken. We observed significant differences between anisotropy in the machine and transverse directions that we attributed to the sequential stretching operation, i.e., the film was stretched in the machine direction first, followed by stretching in the transverse direction, and to film temperature and strain rate for each stretching operation. The result was uniformly higher anisotropies in the machine direction. Film temperature obtained from fluorescence corresponded to oven thermocouple measurements within 2[degrees]C. Polym. Eng. Sci. 44:805-813, 2004.
Citation Details
Title: Real-time monitoring of fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene film (1).
Author: Anthony J. Bur
Publication:Polymer Engineering and Science (Refereed)
Date: April 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 4 Page: 805(9)
Distributed by Thomson Gale
From the author: An optical sensor based on fiber optics has been developed to measure fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene films. The sensor, containing optical fibers, polarizing elements and lenses, was mounted above the polypropylene film as it was processed in a tenter frame oven stretching machine. Fluorescence observations were made using the fluorescent dye, bis (di-tert butylphenyl) perylenedicarboximide (BTBP), which was doped into the resin at very low concentrations. To monitor biaxial stretching, fluorescence anisotropy measurements were carried out with light polarized in the machine and the transverse directions corresponding to the directions of biaxial stretching. Fluorescence based temperature measurements were obtained from the ratio of fluorescence intensities at 544 nm and 577 nm. A matrix of experiments involving three levels of stretch ratio in both the machine and transverse directions was undertaken. We observed significant differences between anisotropy in the machine and transverse directions that we attributed to the sequential stretching operation, i.e., the film was stretched in the machine direction first, followed by stretching in the transverse direction, and to film temperature and strain rate for each stretching operation. The result was uniformly higher anisotropies in the machine direction. Film temperature obtained from fluorescence corresponded to oven thermocouple measurements within 2[degrees]C. Polym. Eng. Sci. 44:805-813, 2004.
Citation Details
Title: Real-time monitoring of fluorescence anisotropy and temperature during processing of biaxially stretched polypropylene film (1).
Author: Anthony J. Bur
Publication:Polymer Engineering and Science (Refereed)
Date: April 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 4 Page: 805(9)
Distributed by Thomson Gale
More Books by Anthony J. Bur, Steven C. Roth
