Erbil Vinyl Acetate Emulsion Polymerization and Copolymerization with Acrylic Monomers

Erscheinungsjahr 2010
ISBN: 978-1-4200-3880-4
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 336 Seiten

The versatility of the emulsion copolymerization reaction and the ability to control the properties of the final latices have led to rapid expansion both in the quantity of polyvinylacetate and vinyl acetate-acrylic copolymer latices and in their applications. Vinyl Acetate Emulsion Polymerization and Copolymerization with Acrylic Monomers provides a collection and logical organization of the published data - much of it formerly found fragmented throughout various journals and little of it referenced in general emulsion polymerization books. To date, no one source has offered chemists and polymer, surface, or colloid specialists the "big picture" of polyvinylacetate-based latices.

Integrating established knowledge with the latest research developments, this book provides the background for understanding the mechanism and kinetics of emulsion polymerization initiated in the aqueous phase and some of the practical problems of latex production. The author presents an overview of industrial practices, new applications, and all of the fundamental material - avoiding theoretical controversies.

With in-depth discussion of the ingredients found in most industrial recipes, Vinyl Acetate Emulsion Polymerization and Copolymerization with Acrylic Monomers helps eliminate costly and time-consuming "trial and error" practices. It serves not only as an introduction for those new to the field, but also as a valuable reference for researchers and applied scientists in both industry and academia.

Zielgruppe

Chemists, chemical engineers, polymer, surface, and colloid chemistry specialists

Autoren/Hrsg.

Erbil, Yildirim H.

Fachgebiete

• Technische Wissenschaften Verfahrenstechnik | Chemieingenieurwesen | Biotechnologie Technologie der Kunststoffe und Polymere

Inhaltsverzeichnis

INTRODUCTION
EMULSION POLYMERIZATION
Emulsion Polymerization of Hydrophobic Monomers
Inverse and Emulsifier Free Emulsion Polymerizations
Vinyl Acetate Emulsion Polymerization
Radiation Induced Vinyl Acetate Emulsion Polymerization
THE ROLE OF INGREDIENTS IN VINYL ACETATE EMULSION
Monomer Quality and Inhibitors
Initiators
Emulsifiers
Protective Colloids
PH and Ionic Strength Controllers
Others
THEORY AND KINETICS OF VINYL ACETATE HOMOPOLYMERIZATION
Effect of Monomer Concentration
Effect of Initiator Concentration and Type
Effect of Emulsifier Concentration and Type
Particle Nucleation Mechanisms
Thermodynamics and Kinetics of Particle Morphology Control
VINYL ACETATE COPOLYMERIZATION WITH ACRYLIC MONOMERS
Reactivity Ratios
Propagation Rate in Copolymerization
Controlled Monomer Addition
The Effect of the Type of the Acrylic Monomer
The Effect of the Vinyl Acetate/Acrylic Monomer Feed Ratio
COLLOIDAL STABILITY OF VINYL ACETATE HOMO AND COPOLYMERS
Basic Phenomena
Steric Stabilization
Coagulation
Ionic Effects
EXPERIMENTAL DETERMINATION OF LATTICE PROPERTIES
Viscosity
Solids Content
Free Monomer Content
Mean Molecular Weight and Molecular Weight Distribution
Graft and Cross-Linked Polymer Content
Monomer Sequence Distribution
Mean Particle Size and Particle Size Distribution
Chemical Composition of Copolymers
Scattering of Colloids Surfactant Adsorption on Latex/Water Interface
Colloidal Stability
Drying and Film Forming Properties of Latices
Surface Tension of Dried Latex Films
Dynamic Mechanical Properties of Latex Films
Aging Properties
FACTORS AFFECTING THE FINAL P ROPERTIES OF THE POLYVINYL ACETATE-BASED LATICES
The Role of the Type and the Quality of the {Polyvinyl Alcohol Protective Colloids on PVAc Homopolymers
The Role of Emulsifiers on the Mean Particle Size and Colloidal Stability
The Stabilization of PVAc Latices by Monomeric Carboxylic Groups
The Role of the Duration of Polymerization Reaction
The Role of Acrylic Comonomers
The Role of Monomer Addition Methods and Propagation Rates on Copolymer Composition in Semi-Batch Reactor Operations
The Role of the Shapes of Reactor Stirrers and Baffles and Stirring Rate
The Role of Antifoaming Agents
Seed Latex Preparation and Use
Emulsion Polymerization in Continuous Reactors
Scale-Up Problems
OVERVIEW OF THE USES OF POLYVINYL ACETATE-BASED LATICES
SOME NEW APPLICATIONS IN INDUSTRY
Ultrasound Sensor Monitoring of Emulsion Polymerization
Loop Reactor Continuous Emulsion Polymerization