Polyolefin nanocomposites: essential work of fracture analysis.: An article from: Polymer Engineering and Science
Book Details
PublisherSociety of Plastics Engineers, Inc.
ISBN / ASINB00082YYMA
ISBN-13978B00082YYM6
AvailabilityAvailable for download now
MarketplaceUnited States 🇺🇸
Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on June 1, 2004. The length of the article is 7173 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: The tensile properties and the fracture toughness, based on the essential work of fracture (EWF) method, of melt-compounded polymer nanocomposites based on poly-propylene (PP) with organo-modified clays (montmorillonite) and maleic anhydride (MA)-grafted PP coupling agents were studied. Depending on the compounding sequence and on whether a coupling agent was used. some improvements in tensile properties were observed. These improvements were related to the level of dispersion of clay particles. The highest tensile properties were obtained for the PP/clay compound showing the highest surface density of uniform sub-micron particles. The mechanical improvements of the PP/clay compounds were those of a microcomposite in which the fiber reinforcement has an average aspect ratio of 17-35. The PP/clay compounds with coupling agents and with highest surface density of uniform sub-micron particles showed very good fracture toughness, with EWF values slightly higher than those of unfilled PP. Fractographic observations showed that clay particles acted as void nucleation sites, which then grew and coalesced, promoting fibrillation of the remaining material between the voids. The EWF results indicated that the void nucleation density determined the fracture toughness. The EWF results also indicated that the plastic work dissipation related to the stability of the fibrillation, which was promoted by the use of a coupling agent. Polym. Eng. Sci. 44:1142-1151, 2004.
Citation Details
Title: Polyolefin nanocomposites: essential work of fracture analysis.
Author: M.N. Bureau
Publication:Polymer Engineering and Science (Refereed)
Date: June 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 6 Page: 1142(10)
Distributed by Thomson Gale
From the author: The tensile properties and the fracture toughness, based on the essential work of fracture (EWF) method, of melt-compounded polymer nanocomposites based on poly-propylene (PP) with organo-modified clays (montmorillonite) and maleic anhydride (MA)-grafted PP coupling agents were studied. Depending on the compounding sequence and on whether a coupling agent was used. some improvements in tensile properties were observed. These improvements were related to the level of dispersion of clay particles. The highest tensile properties were obtained for the PP/clay compound showing the highest surface density of uniform sub-micron particles. The mechanical improvements of the PP/clay compounds were those of a microcomposite in which the fiber reinforcement has an average aspect ratio of 17-35. The PP/clay compounds with coupling agents and with highest surface density of uniform sub-micron particles showed very good fracture toughness, with EWF values slightly higher than those of unfilled PP. Fractographic observations showed that clay particles acted as void nucleation sites, which then grew and coalesced, promoting fibrillation of the remaining material between the voids. The EWF results indicated that the void nucleation density determined the fracture toughness. The EWF results also indicated that the plastic work dissipation related to the stability of the fibrillation, which was promoted by the use of a coupling agent. Polym. Eng. Sci. 44:1142-1151, 2004.
Citation Details
Title: Polyolefin nanocomposites: essential work of fracture analysis.
Author: M.N. Bureau
Publication:Polymer Engineering and Science (Refereed)
Date: June 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 6 Page: 1142(10)
Distributed by Thomson Gale
