Polyethylene : end-use properties and their physical meaning / Yury V. Kissin.

Format:

Book

Author/Creator:

Kissin, Y. V., author.

Language:

English

Subjects (All):

Gums and resins, Synthetic.

Molecular weights.

Polyethylene--Mechanical properties.

Polyethylene.

Physical Description:

1 online resource (195 pages)

Edition:

Second edition.

Place of Publication:

Cincinnati, OH : Hanser Publications, [2020]

Summary:

Provides a necessary bridge between the values of engineering end-use parameters of polyethylene resins and their scientific molecular and structural characteristics. The main goal is to translate common parameters, such as the melt index of a resin or the dart impact strength of a film sample, into the universal language of polymer science.

Contents:

Intro

Preface

Contents

1 Educational Minimum: Synthesis, Structure, and Properties of Polyethylene Resins

1.1 Classification and Applications of Polyethylene Resins

1.2 Catalysts for Synthesis of Polyethylene Resins

1.3 Industrial Processes for the Manufacture of Polyethylene Resins

1.4 Chemistry of Ethylene Polymerization Reactions

1.5 Molecular Weight Distribution of Polyethylene and Methods of Its Analysis

1.6 Examples of Molecular Weight Distribution of Polyethylene Resins

1.6.1 Polyethylene Resins Produced with Metallocene Catalysts

1.6.2 Polyethylene Resins Produced with Supported Ziegler-Natta Catalysts

1.6.3 Polyethylene Resins Produced with Chromium Oxide Catalysts

1.6.4 Polyethylene Resins with Bimodal Molecular Weight Distribution

1.7 Copolymer Statistics and Its Application to Description of LLDPE and VLDPE Resins

1.8 Compositional Uniformity of Polyethylene Resins

1.9 Morphology of Polyethylene Resins

1.10 Mechanical Properties of Polyethylene Resins

1.11 Recycling of Polyethylene Resins

2 Melt Index and Melt Flow Ratio of Polyethylene Resin

2.1 Introduction

2.1.1 Measurement Method of Melt Index

2.1.2 Empirical Correlations between Melt Index and Molecular Weight

2.2 Basics of Polymer Rheology. Melt Flow through a Capillary

2.2.1 Flow of Polymer Melt through a Cylindrical Capillary

2.2.2 Melt Index of Newtonian Melt

2.3 Melt Flow of Monodisperse Polyethylene Resins

2.4 Additivity Rules for Melt Viscosity. Calculation of Melt Indexes and Melt Flow Ratios from Molecular Weight Distribution Data

2.4.1 Additivity Rules for Zero-Shear Viscosity

2.4.2 Additivity Rules for Effective Viscosity and General Expressions for Flow of Multi-Component Non-Newtonian Melts

2.5 Examples of Melt Flow Behavior of Commercial Polyethylene Resins.

2.5.1 Polyethylene Resins Produced with Single-Site Metallocene Catalysts

2.5.2 LLDPE Resins Produced with Supported Metallocene Catalysts

2.5.3 LLDPE Resins Produced with Supported Ziegler-Natta Catalysts

2.5.4 HDPE Resins with Bimodal Molecular Weight Distribution

2.5.5 Effect of Long-Chain Branching

3 Melting Point of Polyethylene Resin

3.1 Introduction

3.2 Melting Point of HDPE Resin

3.3 DSC Melting Curves and Melting Points of LLDPE and VLDPE Resins Produced with Single-Site Catalysts

3.3.1 Effect of Crystallization Conditions

3.3.2 Effect of Copolymer Composition

3.3.3 Crystallization Process of Compositionally Uniform Ethylene / α-Olefin Copolymers. Model for Primary Crystallization

3.3.4 Model for Secondary Crystallization

3.3.5 Combined DSC Model for Compositionally Uniform LLDPE and VLDPE Resins

3.4 DSC Melting Curves and Melting Points of LLDPE Resins Produced with Multi‑Site Catalysts

3.5 DSC Melting Curves of LLDPE Resins Produced with Post-Metallocene Catalysts

4 Crystallinity Degree and Density of Polyethylene Resin

4.1 Crystallinity Degree

4.1.1 Measurement Methods

4.1.2 Definition of Crystallinity Degree of LLDPE and VLDPE Resins Based on Copolymer Statistics

4.2 Density

4.2.1 Measurement Methods

4.2.2 Physical Meaning of Polyethylene Density

5 End-Use Mechanical Properties of Polyethylene Film

5.1 Mechanical Properties of Polyethylene Resins

5.1.1 Effect of Stretching Speed on Mechanical Properties

5.1.2 Orientation in Polyethylene Film

5.2 Dart Impact Strength of LLDPE Film

5.2.1 Description of Dart Impact Test

5.2.2 Model of Dart Impact Test

5.2.3 Effect of Mechanical Properties of LLDPE Resins on Dart Impact Strength

5.2.4 Comparison of Film Made from Ethylene/1-Butene and Ethylene/1-Hexene Copolymers.

5.2.5 Effect of Copolymer Composition

5.2.6 Effect of Compositional Uniformity

5.3 Tear Strength of LLDPE and LDPE Film

5.3.1 Description of Tear Test

5.3.2 Physical Details of Tear Test

5.3.3 Model of Tear Test

5.3.4 Effect of Pendulum Speed

5.3.5 Effect of Resin Mechanical Properties

5.3.6 Effect of Film Orientation

5.3.7 Comparison of Tear Strength of Ethylene/1-Butene and Ethylene/1-Hexene Copolymers

5.3.8 Low Density Polyethylene

5.4 Comparison of Factors Determining Tear Strength and Dart Impact Strength of LLDPE Film

6 End-Use Testing of High Molecular Weight HDPE and MDPE Resins

6.1 Top Load Test of HDPE Containers

6.1.1 Mechanics of Top Load Test

6.2 Dynamic Burst Test of HDPE Pipes and Tubing

6.3 Static Burst Test and Long-Term Fatigue in Polyethylene Pipes and Tubes

6.3.1 Principal Equation and Theory of Low-Stress Failure

6.3.2 Physical Mechanism of Polymer Failure under Low Stress

6.4 Environmental Stress-Cracking Resistance

6.4.1 Description of ESCR Test

6.4.2 Physics of Environmental Stress Cracking

6.4.3 Structural Parameters of HDPE Resins Affecting ESCR

6.4.4 Relationship between ESCR and Long-Term Fatigue in Polyethylene

6.4.5 Mechanism of Environmental Stress Cracking

7 End-Use Testing of LLDPE Film

Extractables, Solubles, Blocking, and Haze

7.1 Introduction

7.2 Extractables and Solubles in LLDPE Resins

7.2.1 Measurement Methods

7.2.2 Control of Extractables in LLDPE Resins

7.3 Blocking of LLDPE Film

7.3.1 Measurement Method

7.3.2 Control of Film Blocking

7.4 Haze of Polyethylene Film

References.

Notes:

Includes bibliographical references.

Description based on print version record.

Description based on publisher supplied metadata and other sources.

ISBN:

9781523145058

1523145056

9781569908327

156990832X

9781569908310

1569908311

OCLC:

1321802732