Polymer Permeability

Author : J. Comyn
Publisher : Springer Science & Business Media
Page : 387 pages
File Size : 42,5 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9789400948587

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Polymer Permeability by J. Comyn Pdf

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 : Liesl K. Massey
Publisher : Cambridge University Press
Page : 569 pages
File Size : 52,9 Mb
Release : 2003
Category : Technology & Engineering
ISBN : 0080950574

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Permeability Properties of Plastics and Elastomers, 2nd Ed. by Liesl K. Massey Pdf

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 : Laurence W. McKeen
Publisher : William Andrew
Page : 354 pages
File Size : 52,9 Mb
Release : 2011-09-08
Category : Technology & Engineering
ISBN : 9781437734706

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Permeability Properties of Plastics and Elastomers by Laurence W. McKeen Pdf

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 : J Comyn
Publisher : Unknown
Page : 396 pages
File Size : 42,7 Mb
Release : 1985-02-28
Category : Electronic
ISBN : 940094859X

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Polymer Permeability by J Comyn Pdf

Author : Yuri Yampolskii,E. FInkelshtein
Publisher : John Wiley & Sons
Page : 440 pages
File Size : 51,8 Mb
Release : 2017-01-10
Category : Technology & Engineering
ISBN : 9781119112730

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Membrane Materials for Gas and Separation by Yuri Yampolskii,E. FInkelshtein Pdf

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 : Harold Hopfenberg
Publisher : Springer Science & Business Media
Page : 480 pages
File Size : 55,9 Mb
Release : 2013-11-21
Category : Technology & Engineering
ISBN : 9781468428773

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Permeability of Plastic Films and Coatings by Harold Hopfenberg Pdf

Author : Liesl K. Massey
Publisher : William Andrew
Page : 615 pages
File Size : 54,7 Mb
Release : 2003-01-01
Category : Technology & Engineering
ISBN : 9780815518518

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Permeability Properties of Plastics and Elastomers, 2nd Ed. by Liesl K. Massey Pdf

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 : Roberto J. Torrent,Rui D. Neves,Kei-ichi Imamoto
Publisher : CRC Press
Page : 536 pages
File Size : 42,5 Mb
Release : 2021-12-22
Category : Technology & Engineering
ISBN : 9780429012914

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Concrete Permeability and Durability Performance by Roberto J. Torrent,Rui D. Neves,Kei-ichi Imamoto Pdf

Durability and service life design of concrete constructions have considerable socio-economic and environmental consequences, in which the permeability of concrete to aggressive intruders plays a vital role. Concrete Permeability and Durability Performance provides deep insight into the permeability of concrete, moving from theory to practice, and presents over 20 real cases, such as Tokyo’s Museum of Western Art, Port of Miami Tunnel and Hong Kong-Zhuhai-Macao sea-link, including field tests in the Antarctic and Atacama Desert. It stresses the importance of site testing for a realistic durability assessment and details the "Torrent Method" for non-destructive measurement of air-permeability. It also delivers answers for some vexing questions: Should the coefficient of permeability be expressed in m2 or m/s? How to get a "mean" pore radius of concrete from gas-permeability tests? Why should permeability preferably be measured on site? How can service life of reinforced concrete structures be predicted by site testing of gas-permeability and cover thickness? Practitioners will find stimulating examples on how to predict the coming service life of new structures and the remaining life of existing structures, based on site testing of air-permeability and cover thickness. Researchers will value theoretical principles, testing methods, as well as how test results reflect the influence of concrete mix composition and processing.

Author : Mohtada Sadrzadeh,Toraj Mohammadi
Publisher : Elsevier
Page : 524 pages
File Size : 45,8 Mb
Release : 2019-11-13
Category : Technology & Engineering
ISBN : 9780128168813

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Nanocomposite Membranes for Water and Gas Separation by Mohtada Sadrzadeh,Toraj Mohammadi Pdf

Nanocomposite Membranes for Water and Gas Separation presents an introduction to the application of nanocomposite membranes in both water and gas separation processes. This in-depth literature review and discussion focuses on state-of-the-art nanocomposite membranes, current challenges and future progress, including helpful guidelines for the further improvement of these materials for water and gas separation processes. Chapters address material development, synthesis protocols, and the numerical simulation of nanocomposite membranes, along with current challenges and future trends in the areas of water and gas separation. Explains the development of nanocomposite membranes through bio-mimicking nanomaterials Discusses the surface modification of nanomaterials to fabricate robust nanocomposite membranes Outlines the environmental and operational challenges for the application of nanocomposite membranes

Author : Maria Grazia De Angelis,Giulio C. Sarti
Publisher : MDPI
Page : 256 pages
File Size : 41,5 Mb
Release : 2021-04-22
Category : Technology & Engineering
ISBN : 9783036502120

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Gas Transport in Glassy Polymers by Maria Grazia De Angelis,Giulio C. Sarti Pdf

This Special Issue of Membranes focuses on several new aspects of fluid transport in glassy polymers, with application in relevant membrane separations such as gas purification, VOC removal and CO2 capture. In particular, the focus lies on novel experimental techniques, and detailed characterization of specific phenomena like polar and multicomponent interactions during transport. The properties of novel materials, such as mixed matrix membranes based on glassy polymers and different selective fillers, are also presented. A critical review of existing modeling approaches to describe the sorption and transport in glassy polymers suitable for membrane separations is provided, including both macroscopic and atomistic models, and relying both on the standard solution–diffusion process and on the facilitated transport mechanism.

Author : Irwin A. Taub,R. Paul Singh
Publisher : CRC Press
Page : 576 pages
File Size : 53,6 Mb
Release : 1997-12-29
Category : Technology & Engineering
ISBN : 1420048988

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Food Storage Stability by Irwin A. Taub,R. Paul Singh Pdf

Food Storage Stability addresses one of the foremost problems faced by food processors - how to stabilize food once it is harvested. Using a holistic approach, the book discusses the changes responsible for food quality deterioration and considers strategies for minimizing or eliminating these degradative changes. Topics include: consumer perceptions and preferences, cellular changes, conversion of major constituents to more stable products, the effect of color and texture, packaging issues, and practical strategies for storing foods frozen, chilled, or at ambient temperature. Food Storage Stability is the only treatment of this subject that covers the diverse factors that influence quality retention in foods and integrates basic concepts in storage stability with practical applications. Food scientists and technologists concerned with changes in food quality are interested in ensuring that safe and appealing food products reach consumers - this is the book that will assist them with that important goal.

Author : R H J Hannink,A J Hill
Publisher : Woodhead Publishing
Page : 368 pages
File Size : 40,9 Mb
Release : 2006-02-28
Category : Technology & Engineering
ISBN : 9781845691189

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Nanostructure Control of Materials by R H J Hannink,A J Hill Pdf

The ability to measure and manipulate matter on the nanometer level is making possible a new generation of materials with enhanced mechanical, optical, transport and magnetic properties. This important book summarises key developments in nanotechnology and their impact on the processing of metals, polymers, composites and ceramics. After a brief introduction, a number of chapters discuss the practical issues involved in the commercial production and use of nanomaterials. Other chapters review ways of nanoengineering steel, aluminium and titanium alloys. Elsewhere the book discusses the use of nanoengineered metal hydrides to store hydrogen as an energy source, and the development of nanopolymers for batteries and other energy storage devices. Other chapters discuss the use of nanotechnology to enhance the toughness of ceramics, the production of synthetic versions of natural materials such as bone, and the development of nanocomposites. Nanostructure control of materials is an ideal introduction to the ways nanotechnology is being used to create new materials for industry. It will be welcomed by R&D managers in such sectors as automotive engineering as well as academics working in this exciting area. Reviews key developments in nanotechnology and their impact on various materials Edited by leading experts in the field

Author : Gijsbertus de With
Publisher : John Wiley & Sons
Page : 594 pages
File Size : 46,7 Mb
Release : 2018-10-22
Category : Technology & Engineering
ISBN : 9783527342105

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Polymer Coatings by Gijsbertus de With Pdf

A practical guide to polymer coatings that covers all aspects from materials to applications Polymer Coatings is a practical resource that offers an overview of the fundamentals to the synthesis, characterization, deposition methods, and recent developments of polymer coatings. The text includes information about the different polymers and polymer networks in use, resins for solvent- and water-based coatings, and a variety of additives. It presents deposition methods that encompass frequently used mechanical and electrochemical approaches, in addition to the physical-chemical aspects of the coating process. The author covers the available characterization methods including spectroscopic, morphological, thermal and mechanical techniques. The comprehensive text also reviews developments in selected technology areas such as electrically conductive, anti-fouling, and self-replenishing coatings. The author includes insight into the present status of the research field, describes systems currently under investigation, and draws our attention to yet to be explored systems. This important text: • Offers a thorough overview of polymer coatings and their applications • Covers different classes of materials, deposition methods, coating processes, and ways of characterization • Contains a text that is designed to be accessible and helps to apply the acquired knowledge immediately • Includes information on selected areas of research with imminent application potential for functional coatings Written for chemists in industry, materials scientists, polymer chemists, and physical chemists, Polymer Coatings offers a text that contains the information needed to gain an understanding of the charaterization and applications of polymer coatings.

Author : Sabu Thomas,Kuruvilla Joseph,S. K. Malhotra,Koichi Goda,M. S. Sreekala
Publisher : John Wiley & Sons
Page : 804 pages
File Size : 52,9 Mb
Release : 2012-04-30
Category : Technology & Engineering
ISBN : 9783527326242

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Polymer Composites, Macro- and Microcomposites by Sabu Thomas,Kuruvilla Joseph,S. K. Malhotra,Koichi Goda,M. S. Sreekala Pdf

The first systematic reference on the topic with an emphasis on the characteristics and dimension of the reinforcement. This first of three volumes, authored by leading researchers in the field from academia, government, industry, as well as private research institutions around the globe, focuses on macro and micro composites. Clearly divided into three sections, the first offers an introduction to polymer composites, discussing the state of the art, new challenges, and opportunities of various polymer composite systems, as well as preparation and manufacturing techniques. The second part looks at macro systems, with an emphasis on fiber reinforced polymer composites, textile composites, and polymer hybrid composites. Likewise, the final section deals with micro systems, including micro particle reinforced polymer composites, the synthesis, surface modification and characterization of micro particulate fillers and flakes as well as filled polymer micro composites, plus applications and the recovery, recycling and life cycle analysis of synthetic polymeric composites.

Author : Laurence W. McKeen
Publisher : William Andrew
Page : 407 pages
File Size : 53,7 Mb
Release : 2012-04-25
Category : Science
ISBN : 9781455725519

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Film Properties of Plastics and Elastomers by Laurence W. McKeen Pdf

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.