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Author: J. Comyn
Publisher: Springer Science & Business Media
ISBN: 9400948581
Category : Technology & Engineering
Languages : en
Pages : 387
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Book Description
Polymers are permeable, whilst ceramics, glasses and metals are gener ally impermeable. This may seem a disadvantage in that polymeric containers may allow loss or contamination of their contents and aggressive substances such as water will diffuse into polymeric struc tures such as adhesive joints or fibre-reinforced composites and cause weakening. However, in some cases permeability is an advantage, and one particular area where this is so is in the use of polymers in drug delivery systems. Also, without permeable polymers, we would not enjoy the wide range of dyed fabrics used in clothing and furnishing. The fundamental reason for the permeability of polymers is their relatively high level of molecular motion, a factor which also leads to their high levels of creep in comparison with ceramics, glasses and metals. The aim of this volume is to examine some timely applied aspects of polymer permeability. In the first chapter basic issues in the mathema tics of diffusion are introduced, and this is followed by two chapters where the fundamental aspects of diffusion in polymers are presented. The following chapters, then, each examine some area of applied science where permeability is a key issue. Each chapter is reasonably self-contained and intended to be informative without frequent outside reference. This inevitably leads to some repetition, but it is hoped that this is not excessive.
Author: J. Comyn
Publisher: Springer Science & Business Media
ISBN: 9400948581
Category : Technology & Engineering
Languages : en
Pages : 387
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Book Description
Polymers are permeable, whilst ceramics, glasses and metals are gener ally impermeable. This may seem a disadvantage in that polymeric containers may allow loss or contamination of their contents and aggressive substances such as water will diffuse into polymeric struc tures such as adhesive joints or fibre-reinforced composites and cause weakening. However, in some cases permeability is an advantage, and one particular area where this is so is in the use of polymers in drug delivery systems. Also, without permeable polymers, we would not enjoy the wide range of dyed fabrics used in clothing and furnishing. The fundamental reason for the permeability of polymers is their relatively high level of molecular motion, a factor which also leads to their high levels of creep in comparison with ceramics, glasses and metals. The aim of this volume is to examine some timely applied aspects of polymer permeability. In the first chapter basic issues in the mathema tics of diffusion are introduced, and this is followed by two chapters where the fundamental aspects of diffusion in polymers are presented. The following chapters, then, each examine some area of applied science where permeability is a key issue. Each chapter is reasonably self-contained and intended to be informative without frequent outside reference. This inevitably leads to some repetition, but it is hoped that this is not excessive.
Author: Laurence W. McKeen
Publisher: William Andrew
ISBN: 1437734707
Category : Technology & Engineering
Languages : en
Pages : 357
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Book Description
Permeability properties are essential data for the selection of materials and design of products across a broad range of market sectors from food packaging to Automotive applications to Medical Devices. This unique handbook brings together a wealth of permeability data in a form that enables quick like-for-like comparisons between materials. The data is supported by a full explanation of its interpretation, and an introduction to the engineering aspects of permeability in polymers. The third edition includes expanded explanatory text which makes the book accessible to novices as well as experienced engineers, written by industry insider and author Larry McKeen (DuPont), and 20% new data and major new explanatory text sections to aid in the interpretation and application of the data. - A unique collection of permeability data designed to enable quick like-for-like comparisons between different materials - Third edition includes 20% new data and expanded explanatory text, which makes the book accessible to novices as well as experienced engineers - Essential reference for materials engineers, design engineers and applications engineers across sectors including packaging, automotive and medical devices
Author: Liesl K. Massey
Publisher: Cambridge University Press
ISBN: 9780080950570
Category : Technology & Engineering
Languages : en
Pages : 569
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Book Description
This extensively revised and updated second edition of the only data handbook available on the properties of commercial polymeric films details the permeability characteristics of over 125 major plastic and elastomer packaging materials. New to this edition are 92 resin chapters containing textual summary information including: category, general description, processing methods, applications, and general permeability considerations for water vapor, oxygen, and other gases including aroma and flavor. The product data is presented in graphical and tabular format, retaining the familiar format of the first edition and allowing easy comparison between materials and test conditions.
Author: Harold Hopfenberg
Publisher: Springer Science & Business Media
ISBN: 1468428772
Category : Technology & Engineering
Languages : en
Pages : 480
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Book Description
Author: Laurence W. McKeen
Publisher: William Andrew
ISBN: 145572551X
Category : Science
Languages : en
Pages : 407
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Book Description
Preface -- 1. Introduction to Plastics and Polymers -- 2. Chapter 2 - Introduction to the Mechanical, Thermal and Permeation Properties of Plastics and Elastomers -- 3. Production of films -- 4. Markets and Applications for films -- 5. Styrenic Plastics -- 6. Polyesters -- 8. Polyamides (Nylons) -- 9. Polyolefins -- 10. Polyvinyls & Acrylics -- 11. Fluoropolymers -- 12. High Temperature/High Performance Polymers -- 13. Elastomers and rubbers -- 14. Renewable Resource or biodegradable polymers -- Appendices -- Permeation Unit Conversion Factors -- Vapor Transmission rate Conversion factors.
Author: Laurence W. McKeen
Publisher: William Andrew
ISBN: 0323478883
Category : Technology & Engineering
Languages : en
Pages : 376
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Book Description
Permeability Properties of Plastics and Elastomers, Fourth Edition provides a comprehensive collection of graphical multipoint and tabular data covering the permeation of liquids, vapors, and gases through plastic or polymeric materials, such as films, membranes, and containers. This updated edition includes an entirely new chapter on sustainable and biodegradable polymers and an extensive introductory section covering fatigue, what it is, how it is measured, and the fundamentals of permeation and permeability properties. Foundational information is also provided on the production of films, containers, membranes, and the markets and applications for these materials. - Presents an essential reference tool: part of the daily workflow of engineers and scientists involved in the plastics industry and product design with plastics - Helps practitioners gain knowledge of exact permeation rates for liquids, vapors or gases through a range of polymeric materials - Enables engineers to improve performance of their products where permeability properties are important, from where packages need to be near-hermetically sealed, to where a selectively permeable barrier is required
Author: Liesl K. Massey
Publisher: William Andrew
ISBN: 081551851X
Category : Technology & Engineering
Languages : en
Pages : 616
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Book Description
This extensively revised and updated second edition of the only data handbook available on the properties of commercial polymeric films details the permeability characteristics of over 125 major plastic and elastomer packaging materials. New to this edition are 92 resin chapters containing textual summary information including: category, general description, processing methods, applications, and general permeability considerations for water vapor, oxygen, and other gases including aroma and flavor. The product data is presented in graphical and tabular format, retaining the familiar format of the first edition and allowing easy comparison between materials and test conditions.
Author: Yuri Yampolskii
Publisher: John Wiley & Sons
ISBN: 1119112710
Category : Technology & Engineering
Languages : en
Pages : 122
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Book Description
Si containing polymers have been instrumental in the development of membrane gas separation practices since the early 1970s. Their function is to provide a selective barrier for different molecular species, where selection takes place either on the basis of size or on the basis of physical interactions or both. Combines membrane science, organosilicon chemistry, polymer science, materials science, and physical chemistry Only book to consider polymerization chemistry and synthesis of Si-containing polymers (both glassy and rubbery), and their role as membrane materials Membrane operations present environmental benefits such as reduced waste, and recovered/recycled valuable raw materials that are currently lost to fuel or to flares
Author: Frank N. Jones
Publisher: John Wiley & Sons
ISBN: 111902689X
Category : Science
Languages : en
Pages : 512
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Book Description
The definitive guide to organic coatings, thoroughly revised and updated—now with coverage of a range of topics not covered in previous editions Organic Coatings: Science and Technology, Fourth Edition offers unparalleled coverageof organic coatings technology and its many applications. Written by three leading industry experts (including a new, internationally-recognized coatings scientist) it presents a systematic survey of the field, revises and updates the material from the previous edition, and features new or additional treatment of such topics as superhydrophobic, ice-phobic, antimicrobial, and self-healing coatings; sustainability, artist paints, and exterior architectural primers. making it even more relevant and useful for scientists and engineers in the field, as well as for students in coatings courses. The book incorporates up-to-date coverage of recent developments in the field with detailed discussions of the principles underlying the technology and their applications in the development, production, and uses of organic coatings. All chapters in this new edition have been updated to assure consistency and to enable extensive cross-referencing. The material presented is also applicable to the related areas of printing inks and adhesives, as well as areas within the plastics industry. This new edition Completely revises outdated chapters to ensure consistency and to enable extensive cross-referencing Correlates the empirical technology of coatings with the underlying science throughout Provides expert troubleshooting guidance for coatings scientists and technologists Features hundreds of illustrative figures and extensive references to the literature A new, internationally-recognized coatings scientist brings fresh perspective to the content. Providing a broad overview for beginners in the field of organic coatings and a handy reference for seasoned professionals, Organic Coatings: Science and Technology, Fourth Edition, gives you the information and answers you need, when you need them.
Author: Naoki Toshima
Publisher: Wiley-VCH
ISBN:
Category : Science
Languages : en
Pages : 264
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Book Description
