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Ultrasound‐aided extrusion process for preparation of polypropylene–clay nanocomposites
Author(s) -
Lapshin Sergey,
Isayev A. I.
Publication year - 2007
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.20095
Subject(s) - plastics extrusion , polypropylene , materials science , extrusion , nanocomposite , composite material , rheology , mixing (physics) , fabrication , ultrasonic sensor , die (integrated circuit) , process (computing) , ultrasound , nanotechnology , computer science , medicine , physics , alternative medicine , pathology , quantum mechanics , acoustics , operating system
Two methods for the fabrication of polypropylene/clay nanocomposites using a continuous ultrasound assisted process are compared. In the first approach, a two‐stage process was implemented. The nanocomposites were prepared by using a corotating twin‐screw extruder followed by a single‐screw extruder equipped with an ultrasonic die attachment. In the second method, a single‐stage process was used. The nanocomposites were compounded by using a single‐screw extruder with mixing elements and an ultrasonic die attachment. Two regimens of feeding were realized, namely, starved and flood feeding. The gap size in the ultrasonic treatment zone was varied. Die pressure and power consumption were measured. Similarities and differences of nanocomposites obtained by these two methods are discussed on the basis of their rheological and mechanical properties and their structural characteristics. J. VINYL ADDIT. TECHNOL., 13:40–45, 2007. © 2007 Society of Plastics Engineers.