Melt Rheology and Its Role in Plastics Processing

Abstract

No part of the material protected by this copyright notice may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without written permission from the copyright owner. JMD wishes to acknowledge the support and encouragement of McGill University for providing a working environment conducive to a major writing project. He also wishes to recognize the colleagues and research students who have played a vital role in the development of his understanding of polymer rheology and its applications. In addition, JMD wishes to express his appreciation to the University of Wisconsin, especially to R. B. Bird and A. S. Lodge, for their professional hospitality during the time when he got his part of the writing well launched.KFW wishes to acknowledge the management of Hoechst Celanese for their permission to participate in this book. He also PREFACE vii wishes to thank his many colleagues at Hoechst Celanese, in particular H. M. Yoon, and his colleagues at the University of Delaware, most especially A. B. Metzner, for their contributions to his experience and knowledge of the fields discussed in this book. Others to whom appreciation is due include W.

Influence of Coupling Agents on Melt Flow Behavior of Natural Fiber Composites

“…No attempts were made to apply the Rabinowitsch and Bagley corrections [20] because of the occurrence of wall slip, which is discussed in the subsequent sections of this paper. ''Zero'' length die (L ¼ 0.25 mm) was used for measuring the entrance pressure drop, DP e .…”

Preparation and Rheological Characteristics of Solvent-Cast Poly(ethylene oxide)/Montmorillonite Nanocomposites

“…The structure of nanocomposites might not reach an equilibrium state or the initial structure after completion of the hysteresis experiment. Since entanglement of polymer chains and arrangement of the clay is not permanent and is altered by flow and relaxation processes (the polymer matrix possesses a so-called "fading memory" [30] ), any disturbance of this steady state, such as shear will disrupt the structure of the polymer matrix in the presence of clay particles. Perret et al [29] investigated that the hysteresis loop area could be expressed as a function of viscosity.…”

Optical properties of blown and cast polyethylene films: Surface versus bulk structural considerations

“…41 Applying this approximation in the low frequency range ( ϭ 0.03 s Ϫ1 ), the values for recoverable shear strain of the respective eight resins are shown in Table IV. We observe that the values for the metallocene resins are distinctly lower than the two Ziegler-Natta resins, the latter of which provide blown films that show no signs of superstructural elements.…”