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Interaction of process variables with the fracture behavior of amorphous polystyrene during attrition.: An article from: Polymer Engineering and Science
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This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on September 15, 1996. The length of the article is 3827 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: This study investigates the fracture of oriented general-purpose polystyrene. Specimen microstructure was controlled using an extrusion-sheeting technique where draw ratio, polymer melt temperature, cooling roll temperature, and nip roll pressure changed according to a designed experiment. Sharp-notched tension results display a 4X difference in longitudinal vs. transverse specimen values. Shrinkage measurements show contraction in the machine direction amplifies with increasing draw ratio. Craze formation is visible only in those specimens tested in the longitudinal direction. Fracture mechanisms have strong orientation dependence and the extrusion-sheeting process produces an ideal system to study the effects on attrition. Comminution studies illustrate draw ratio has an effect on the final median particle size and width distribution of the powder. Increasing the draw ratio reduces the volume median particle size and minimizes the formation of fine particles. A monotonic fracture mechanism was initially considered but rejected in favor of a low cycle fatigue model based on estimates of fracture strength.
Citation Details Title: Interaction of process variables with the fracture behavior of amorphous polystyrene during attrition. Author: Michael P. Kubisiak Publication:Polymer Engineering and Science (Refereed) Date: September 15, 1996 Publisher: Society of Plastics Engineers, Inc. Volume: v36 Issue: n17 Page: p2253(7)
