Optical properties of highly transparent polypropylene cast films: influence of material structure, additives, and processing conditions.: An article from: Polymer Engineering and Science
Book Details
PublisherThomson Gale
ISBN / ASINB000FILBLE
ISBN-13978B000FILBL2
AvailabilityAvailable for download now
Sales Rank9,781,662
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on April 1, 2006. The length of the article is 6048 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: Polypropylene homopolymers and ethylene/propylene-random-copolymers formulated with and without anti-blocking additives were extruded to cast films with an industrial scale extruder equipped with a soft box, a specific air knife that expels a higher volume of air at lower velocity. The films were analyzed as to their optical properties haze and clarity. A comprehensive topographical characterization was performed using atomic force microscopy (AFM) and confocal microscopy. To obtain morphological information on a nanometer scale AFM phase imaging, micro-thermal analysis and small angle X-ray scattering (SAXS) were done. A significant effect of additives and processing conditions on the film topography and the optical properties was revealed. The films without anti-blocking and antacid aids showed the best optical properties and lowest vertical roughness fluctuations. In contrast, the addition of anti-blocking and antacid aids reduced the optical properties associated with an increase in surface roughness. While for films without anti-blocking aids an enhanced soft box condition resulted in lower vertical fluctuations of roughness and better optical properties, the behavior was in reverse for films with anti-blocking aid. By means of SAXS crystalline lamellae with a thickness of about 2.5 nm were detected. High-resolution phase imaging AFM yielded thicker crystal lamellae on the film surface. POLYM. ENG. SCI., 46:520-531, 2006. [c] 2006 Society of Plastics Engineers
Citation Details
Title: Optical properties of highly transparent polypropylene cast films: influence of material structure, additives, and processing conditions.
Author: Katharina Resch
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 4 Page: 520(12)
Distributed by Thomson Gale
From the author: Polypropylene homopolymers and ethylene/propylene-random-copolymers formulated with and without anti-blocking additives were extruded to cast films with an industrial scale extruder equipped with a soft box, a specific air knife that expels a higher volume of air at lower velocity. The films were analyzed as to their optical properties haze and clarity. A comprehensive topographical characterization was performed using atomic force microscopy (AFM) and confocal microscopy. To obtain morphological information on a nanometer scale AFM phase imaging, micro-thermal analysis and small angle X-ray scattering (SAXS) were done. A significant effect of additives and processing conditions on the film topography and the optical properties was revealed. The films without anti-blocking and antacid aids showed the best optical properties and lowest vertical roughness fluctuations. In contrast, the addition of anti-blocking and antacid aids reduced the optical properties associated with an increase in surface roughness. While for films without anti-blocking aids an enhanced soft box condition resulted in lower vertical fluctuations of roughness and better optical properties, the behavior was in reverse for films with anti-blocking aid. By means of SAXS crystalline lamellae with a thickness of about 2.5 nm were detected. High-resolution phase imaging AFM yielded thicker crystal lamellae on the film surface. POLYM. ENG. SCI., 46:520-531, 2006. [c] 2006 Society of Plastics Engineers
Citation Details
Title: Optical properties of highly transparent polypropylene cast films: influence of material structure, additives, and processing conditions.
Author: Katharina Resch
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: April 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 4 Page: 520(12)
Distributed by Thomson Gale
