Anisotropy in the electrical behavior of immiscible polypropylene/nylon/carbon black blends processed slightly below the melting temperature of the ... article from: Polymer Engineering and Science
Book Details
Author(s)J. Zoldan, A. Siegmann, M. Narkis
PublisherThomson Gale
ISBN / ASINB000IZIWIO
ISBN-13978B000IZIWI2
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
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This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on September 1, 2006. The length of the article is 6561 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: Carbon black (CB) containing polypropylene/nylon (PP/Ny) blends, processed slightly below the melting temperature ([T.sub.m]) of the dispersed Ny phase, leads to formation of fibrillar Ny phase and electrically anisotropic systems. CB containing PP/Ny blends were compounded (twin screw extruder) and processed (injection molding) slightly below the [T.sub.m] of dispersed Ny phase at different blending sequences. To establish structure-property relationships scanning electron microscopy, high resolution scanning electron microscopy, differential scanning calorimeter were used and electrical properties were also studied. Addition of CB to binary PP/Ny blends, processed below the Ny [T.sub.m], altered the Ny fibrillation process forming an irregular continuous phase, containing the CB particles, rather than the fibrils formed in the PP/Ny blends. Yet, upon changing the processing sequence, i.e., compounding PP and CB and then adding Ny in the injection molding stage, Ny fibrils were attained, maintaining phase continuity, oriented in the flow direction and CB particles preferentially located on their surfaces. Blends exhibiting a fibrillar Ny network covered by CB particles exhibited electrical anisotropy. The Ny fibrils exhibited an additional higher crystalline melting peak and molecular orientation. The composites are conductive in the Ny fibril direction, while insulating in the perpendicular direction. Once the CB is located within both, the Ny and the PP matrix the electrical behavior is isotropic. POLYM. ENG. SCI., 46:1250-1262, 2006. [c] 2006 Society of Plastics Engineers
Citation Details
Title: Anisotropy in the electrical behavior of immiscible polypropylene/nylon/carbon black blends processed slightly below the melting temperature of the nylon.
Author: J. Zoldan
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 9 Page: 1250(13)
Distributed by Thomson Gale
From the author: Carbon black (CB) containing polypropylene/nylon (PP/Ny) blends, processed slightly below the melting temperature ([T.sub.m]) of the dispersed Ny phase, leads to formation of fibrillar Ny phase and electrically anisotropic systems. CB containing PP/Ny blends were compounded (twin screw extruder) and processed (injection molding) slightly below the [T.sub.m] of dispersed Ny phase at different blending sequences. To establish structure-property relationships scanning electron microscopy, high resolution scanning electron microscopy, differential scanning calorimeter were used and electrical properties were also studied. Addition of CB to binary PP/Ny blends, processed below the Ny [T.sub.m], altered the Ny fibrillation process forming an irregular continuous phase, containing the CB particles, rather than the fibrils formed in the PP/Ny blends. Yet, upon changing the processing sequence, i.e., compounding PP and CB and then adding Ny in the injection molding stage, Ny fibrils were attained, maintaining phase continuity, oriented in the flow direction and CB particles preferentially located on their surfaces. Blends exhibiting a fibrillar Ny network covered by CB particles exhibited electrical anisotropy. The Ny fibrils exhibited an additional higher crystalline melting peak and molecular orientation. The composites are conductive in the Ny fibril direction, while insulating in the perpendicular direction. Once the CB is located within both, the Ny and the PP matrix the electrical behavior is isotropic. POLYM. ENG. SCI., 46:1250-1262, 2006. [c] 2006 Society of Plastics Engineers
Citation Details
Title: Anisotropy in the electrical behavior of immiscible polypropylene/nylon/carbon black blends processed slightly below the melting temperature of the nylon.
Author: J. Zoldan
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2006
Publisher: Thomson Gale
Volume: 46 Issue: 9 Page: 1250(13)
Distributed by Thomson Gale
