Elastic behavior of polymer melts : rheology and processing / Helmut Münstedt.

Format:

Book

Author/Creator:

Münstedt, Helmut, 1941- author.

Contributor:

Diaz Luque, Julia, editor.

Language:

English

Subjects (All):

Polymers--Rheology.

Polymers.

Plastics.

Rheology.

Physical Description:

1 online resource (298 pages)

Edition:

First edition.

Place of Publication:

Munich, Germany : Hanser Publishers ; Cincinnati, Ohio : Hanser Publications, 2019.

Summary:

Understanding the elastic properties of polymer melts is necessary for ensuring successful polymer processing and thus producing high-quality plastic parts. This unique book is the first to focus on this important topic.

Contents:

Intro

Preface

About the Author

List of Symbols Used in the Book

Contents

1 Introduction

1.1 References

2 Phenomenological Evidence of Elasticity

2.1 Effects Due to Normal Stresses

2.2 Extrudate Swell

2.3 Contraction Flow

2.4 Time Dependence

2.5 References

3 Principles of the Determination of Elastic Properties

3.1 Creep Recovery Experiment and Retardation Spectrum

3.2 Relaxation Experiment and Relaxation Spectrum

3.3 Dynamic-Mechanical Experiment

3.4 Stressing Experiment

3.5 Capillary Rheometry

3.6 Recoverable Elongation

3.7 References

4 Experimental Basics of Various Methods for Measuring the Elastic Behavior

4.1 Thermal Stability

4.2 Linearity and Stationarity

4.2.1 Creep Recovery Experiment

4.2.2 Relaxation Experiment

4.2.3 Dynamic-Mechanical Experiments

4.2.4 Stressing Experiments

4.2.5 Extrudate Swell

4.2.6 Recoverable Elongation

4.3 References

5 Dependence of Elastic Quantities on Experimental Parameters

5.1 Recoverable Compliance

5.1.1 Stress Dependence

5.1.2 Temperature Dependence

5.2 Relaxation Modulus

5.3 Storage Modulus

5.4 Normal Stress Difference

5.5 Recoverable Elongation

5.6 Extrudate Swell

5.6.1 General Features of Extrudate Swell

5.6.2 Detailed Analysis of Extrudate Swell

5.6.3 Extrudate Swell for Various Die Geometries

5.7 References

6 Dependence of Elastic Properties on Molecular Structure

6.1 Analysis of Molecular Structure

6.1.1 Molar Mass Distribution and Its Characteristic Quantities

6.1.2 Branches and Their Analysis

6.2 Influence of Molar Mass

6.2.1 Linear Elastic Properties

6.2.2 Nonlinear Elastic Properties

6.3 Influence of Molar Mass Distribution

6.3.1 Linear Elastic Properties

6.3.1.1 Dependence on the Polydispersity Index.

6.3.1.2 Effect of High Molar Mass Components

6.3.2 Nonlinear Elastic Properties

6.4 Influence of Long-Chain Branching

6.4.1 Linear Elastic Properties

6.4.1.1 Long-Chain Branched Polystyrenes

6.4.1.2 Long-Chain Branched Polyolefins

6.4.1.3 Temperature Dependence of Linear Elastic Compliances

6.4.1.4 Retardation Spectra

6.4.1.5 Relaxation Spectra

6.4.2 Nonlinear Elastic Properties

6.4.2.1 Recoverable Compliance

6.4.2.2 Damping Function

6.4.2.3 Extrudate Swell

6.4.2.4 Recoverable Elongation

6.5 Influence of Mechanical Pretreatments on Elastic Properties

6.5.1 Extrudate Swell of Long-Chain Branched Polyethylenes

6.5.2 Elastic Properties of a Long-Chain Branched and a Linear Polypropylene

6.6 References

7 Models for the Description of Elastic Effects

7.1 Spring-Dashpot Models

7.2 Entanglements

7.3 Doi-Edwards Theory

7.4 Theory for Long-Chain Branched Polymers

7.5 Mixing Rule for the Linear Steady-State Recoverable Compliance of Blends

7.6 Numerical Description of the Nonlinear Behavior of the Steady-State Recoverable Compliance

7.7 Numerical Descriptions of Extrudate Swell

7.7.1 Entry Region

7.7.2 Flow within the Capillary

7.8 References

8 Elastic Behavior and Its Relevance for Various Applications

8.1 Creep Recovery Experiments as a Contribution to Molecular Analysis

8.1.1 Creep Recovery Compliance

8.1.2 Retardation Spectra

8.1.3 Calculation of Dynamic-Mechanical Quantities from Retardation Spectra

8.2 Elastic Properties and Entrance Flow Patterns

8.3 Elastic Behavior of Refined Polyethylenes and Their Relation to End-Use Properties

8.3.1 Application-Related Properties of IUPAC C in Comparison with IUPAC A

8.3.2 Optical Properties of Various Polyethylenes After Mechanical Pretreatments.

8.4 Extrudate Swell as a Quantity for Qualitative Material Specifications

8.5 References

9 Polymeric Materials with Microparticles

9.1 General Experimental Features

9.1.1 Slip and Edge Fracture

9.1.2 Yielding

9.2 Glass Beads as Fillers

9.2.1 Determination of Yield Stresses

9.2.2 Recoverable Strain

9.2.3 Colloidal Glasses

9.2.4 Model for Suspended Glass Beads of Microsize

9.2.5 Dynamic-Mechanical Measurements

9.3 Normal Stress Differences and Recoverable Strain

9.4 Extrudate Swell

9.5 Various Microfillers

9.6 References

10 Polymeric Materials with Nanoparticles

10.1 Nanoparticles Investigated

10.2 Dynamic-Mechanical Experiments

10.2.1 Determination of Linear Behavior

10.2.2 Melts with Various Concentrations of Nanoparticles

10.3 Creep and Creep Recovery Experiments

10.3.1 Influence of a Particle Network

10.3.2 Nanosilica-Filled PMMA as a Model System

10.3.3 Retardation Spectra

10.4 Model

10.4.1 Experimental Results Supporting the Model

10.4.1.1 Dependence of the Recoverable Compliance on Filler Size

10.4.1.2 Stress Dependence of the Recoverable Compliance

10.5 Temperature Dependence of Creep and Creep Recovery

10.6 Influence of the Polymer Matrix on the Linear Steady-State Recoverable Compliance

10.7 Linear Elastic Properties of Melts with Various Nanofillers

10.7.1 Polymethylmethacrylate with Nanoclay

10.7.2 Polymethylmethacrylate with Graphite

10.7.3 Polymethylmethacrylate, Polycarbonate, and Polypropylene with Carbon Nanotubes

10.8 Nonlinear Elastic Properties

10.8.1 Extrudate Swell

10.8.2 Recoverable Elongation

10.9 Comparison of Nonlinear and Linear Elastic Properties

10.10 References

11 Immiscible Polymer Blends

11.1 Linear Elastic Behavior

11.1.1 Dynamic-Mechanical Experiments

11.1.2 Recoverable Shear.

11.2 Nonlinear Elastic Behavior

11.2.1 Recoverable Elongation

11.2.2 Extrudate Swell

11.3 References

12 Influence of Elastic Properties on Processing

12.1 Measurement of Elastic Quantities at High Shear Rates

12.2 The Role of Extrudate Swell in the Shape of Extruded Parts

12.3 The Role of Extrudate Swell in Pelletizing

12.4 The Role of Extrudate Swell in Additive Manufacturing by Material Extrusion

12.5 Extrudate Swell and Extrusion through an Annular Die

12.6 Extrudate Swell of Rectangular Dies

12.7 Influence of Tensile Stress on Extrudate Swell

12.8 Elastic Properties of Polymer Melts and Their Relation with Film Drawing

12.8.1 Basic Features of Film Drawing

12.8.2 Models for the Drawing Process

12.8.3 Drawing Experiments on Three Polypropylenes

12.9 Draw Resonance

12.9.1 Film Drawing

12.9.2 Fiber Spinning

12.9.3 Comparison with Results from the Literature

12.10 References

13 Influences of Processing on Molecular Orientation and Recoverable Strain

13.1 General Influence of Processing

13.2 Molecular Orientation and Recoverable Strain

13.3 Injection-Molded Parts from Amorphous Polymers

13.3.1 Recoverable Strain within an Injection-Molded Part

13.3.2 Mechanical Properties of Injection-Molded Parts

13.4 Films from Semi-crystalline Polymers

13.4.1 Stretch Films

13.4.2 Shrink Films

13.4.2.1 Thermal Shrinkage of Uniaxially Stretched Films

13.4.2.2 Shrinkage of Biaxially Stretched Films

13.4.3 Role of Molecular Orientation for Applications

13.4.3.1 Applications of Stretch Films

13.4.3.2 Applications of Shrink Films

13.5 References

Index.

Notes:

Description based on print version record.

Description based on publisher supplied metadata and other sources.

ISBN:

9781523126828

1523126825

9781569907559

1569907552

9781569907542

1569907544

OCLC:

1119664893