Reactive processing of LLDPEs in corotating intermeshing twin-screw extruder. I. Effect of peroxide treatment on polymer molecular structure

1995 ◽  
Vol 58 (11) ◽  
pp. 2077-2094 ◽  
Author(s):  
Marly G. Lachtermacher ◽  
Alfred Rudin
Keyword(s):  
Molecular Structure ◽  
Twin Screw Extruder ◽  
Reactive Processing ◽  
Screw Extruder ◽  
Twin Screw

scholarly journals Flow Analysis for a Reactive Processing in a Twin Screw Extruder

Seikei-Kakou ◽  
1995 ◽  
Vol 7 (8) ◽  
pp. 521-528 ◽  
Author(s):  
Takamasa FUKUOKA ◽  
Kyonsuku MIN
Keyword(s):  
Flow Analysis ◽  
Twin Screw Extruder ◽  
Reactive Processing ◽  
Screw Extruder ◽  
Twin Screw

scholarly journals A Simple-to-Implement Simulator for the Reactive Extrusion of Poly(Lactic Acid) in a Corotating Uniform Twin-Screw Extruder

2015 ◽  
Vol 2015 ◽  
pp. 1-13
Author(s):  
René O. Vargas ◽  
J. Esteban López-Aguilar ◽  
Lorenzo A. Martínez-Suástegui ◽  
Francisco López-Serrano
Keyword(s):  
Lactic Acid ◽  
Reactive Extrusion ◽  
Poly Lactic Acid ◽  
Twin Screw Extruder ◽  
Reactive Processing ◽  
Screw Extruder ◽  
Radical Ring ◽  
Practical Applications ◽  
Numerical Predictions ◽  
Twin Screw

The present paper deals with the poly(lactic acid) (PLA) reactive processing simulation in a uniform corotating twin-screw extruder that can be readily turned into practical applications in pilot and industrial equipment. The simulator provides a cause-effect guide that can be useful for starting an experimental setup in a reactive screw extruder for a biopolymer in a growing industry. The proposed model considers a free radical ring-opening mechanism involving the main characteristic flows inside the extruder and the non-Newtonian behavior of PLA. The characteristic behavior relating reaction rate, average molecular weights, and polydispersity against chamber number are described by S-shaped and monotonically decreasing curves, for the equipment. Numerical predictions show that this simple and easy to implement model accurately reproduces previously reported data and that the impurity concentration exhibits a marked effect over all the variables, except conversion.

Reactive Blending in a Twin Screw Extruder

1996 ◽  
Vol 11 (2) ◽  
pp. 139-146 ◽  
Author(s):  
A. De Loor ◽  
P. Cassagnau ◽  
A. Michel ◽  
L. Delamare ◽  
B. Vergnes
Keyword(s):  
Twin Screw Extruder ◽  
Reactive Blending ◽  
Screw Extruder ◽  
Twin Screw
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