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پزشکی، دندانپزشکی و داروسازی
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محصولات
Characterization of Spin Coated Polymers in Nano-environments as a Function of Film Thickness - Original PDF
نویسندگان: خلاصه: This thesis describes the behavior of ultrathin polymer films supported on a silicon wafer substrate. Two separate studies have been performed: the first focuses on the viscoelastic cooperativity of thin films, and the second concentrates on the morphological behavior of polymer brush films. Industrial use of thin films has increased for several reasons including the development of ever-smaller electronic devices. As applications of polymers become smaller and thinner, the behavior of polymer chains in these confined geometries needs to be understood. Many aspects need to be probed such as the effect of molecular weight, thermal degradation, and the adhesion properties. In the first study, one characterization scheme, cooperativity, was chosen to summarize the influence of the small scale on polymer behavior. The theory of cooperativity focuses on polymer chain interactions and relates those interactions to macroscopic behavior. This research looks specifically at the well-defined system of polymethyl methacrylate and silicon to understand better how cooperativity reveals polymeric behavior in thin films
Inorganic and Organometallic Polymers - Original PDF
نویسندگان: خلاصه: Inorganic polymers contain elements other than carbon as part of their principal backbone structure and are known to exhibit a wide range of composition and structure. Emphasizing physical properties, chemical synthesis, and characterization of inorganic polymers, Inorganic and Organometallic Polymers presents valuable and informative coverage of the field.With numerous examples of real-world practical applications and end-of-chapter exercises, Inorganic and Organometallic Polymers is suitable for use as a text in special topics in organic and polymer chemistry courses. The book features useful sections on: * Classification schemes for inorganic polymers * Synthesis of inorganic polymers, including step-growth syntheses, chain polymerizations, ring-opening polymerizations, and reductive coupling reactions * Practical inorganic polymer chemistry topics such as polymer elastomers, dental and medical polymers, lubricants, lithographic resists, pre-ceramics, and more
Practical Guide to High Performance Engineering Plastics - Original PDF
نویسندگان: خلاصه: High performance engineering plastics are used in a vast range of applications and environments. They are becoming increasingly important because of trends towards more reliable and higher performance machines and devices. This book gives readers a working knowledge and understanding of high performance engineering plastics. It starts with a simple, practical overview of key properties and principles. In each of the chapters there are sections on production chemistry, product forms, properties, processing and applications. There is a strong bias towards materials and concepts which are used in practice. The materials covered include high performance Polyethersulfones, Polyetherimides, Polyphthalamides, Polyphenylene Sulfide, Polyaryletherketones, Polyamideimides, Polyimides, Polybenzimidazole, Liquid Crystalline Polyesters and Perfluoropolymers. The reader will develop the ability to understand why materials are chosen for certain applications, why those materials have particular properties and how those properties can be modified. This will facilitate conversations with both materials suppliers and end users. It will help to identify the best and most cost effective solutions.
Mechanical Properties of Polymers and Composites - Original PDF
نویسندگان: خلاصه: This text, now in its second edition, offers an up-to-date, expanded treatment of the behaviour of polymers with regard to material variables and test and use conditions. It highlights general principles, useful empirical rules and practical equations; detailing the specific behaviour of many common polymers, the text: places emphasis on time and frequency dependence over temperature dependence; uses contemporary molecular mechanisms to explain creep, stress relaxation, constant strain rate responses and crazing; provides explicit equations to predict responses; supplies a discussion of large deformation multiaxial responses; compares statistical and continuum theories on the same data set; and updates stress-strain behavior and particulate filled systems.
Natural Polymers: Industry Techniques and Applications - Original PDF
نویسندگان: خلاصه: This book introduces the most recent innovations in natural polymer applications in the food, construction, electronics, biomedical, pharmaceutical, and engineering industries. The authors provide perspectives from their respective range of industries covering classification, extraction, modification, and application of natural polymers from various sources in nature. They discuss the techniques used in analysis of natural polymers in various systems incorporating natural polymers as well as their intrinsic properties.
Polymer coatings : a guide to chemistry, characterization, and selected applications - Original PDF
نویسندگان: خلاصه: Materials always have been of crucial importance for society. The wide range of the presently existent materials provides a large variety of properties that have been put to full use for many applications. However, applications often require a combination of properties or, actually, different properties at different locations and times, dependent on the circumstances at hand. Hence, combinations of materials are important and, since properties at surfaces are usually required to be different from those in bulk, coatings have become an important branch of materials science.
Functional Polymer Coatings: Principles, Methods, and Applications - Original PDF
نویسندگان: خلاصه: Focusing on a variety of coatings, this book provides detailed discussion on preparation, novel techniques, recent developments, and design theories to present the advantages of each function and provide the tools for better product performance and properties. • Presents advantages and benefits of properties and applications of the novel coating types • Includes chapters on specific and novel coatings, like nanocomposite, surface wettability tunable, stimuli-responsive, anti-fouling, antibacterial, self-healing, and structural coloring • Provides detailed discussion on recent developments in the field as well as current and future perspectives • Acts as a guide for polymer and materials researchers in optimizing polymer coating properties and increasing product performance
Natural polymers for drug delivery - Original PDF
نویسندگان: خلاصه: Natural polymers have been utilized extensively in food, pharmaceuticals, cosmetics, textiles, oil drilling and paint industries. Their non-toxic and inexpensive attributes readily enhance their commercial acceptability and make them potent agents in lieu of synthetic polymers. This book explores the opportunistic utility of natural polymers in developing effective drug delivery systems and provides a comprehensive and up-to-date analysis of their source, chemical structure and mechanism of action. Covering novel polymers for drug delivery--in particular extracts from plants, microorganisms and proteins, as well as water soluble and water insoluble biodegradable polymers--it presents an encyclopedic overview of natural polymers: * quintessential roles in binding drugs towards enhancing bio-availability * modification and derivatization for targeted delivery * role as active drugs Natural Polymers for Drug Delivery is an invaluable resource for researchers, students and industrial scientists in the fields of biochemistry, chemistry, pharmacology and food science
Natural Polymer Drug Delivery Systems: Nanoparticles, Plants, and Algae - Original PDF
نویسندگان: خلاصه: Drug delivery is attractive approach for medicine fi eld, as more potent and specifi c drugs are being developed. With the integration of nanotechnology, socalled smart drug-delivery systems integrate biosensing functionalities which sustain independently in vivo reaction control that resulting in part unique features of the term Nanomedicine. Nanotechnology is one of the very frontiers of science today. Current polymeric research is dominantly participating in the advancement of nanotechnology by offering the controlled release of therapeutic agents in constant doses over prolong periods, cyclic dosage, and tunable release of both hydrophilic and hydrophobic drugs. Many biomaterials can be used to this end, offering extensive chemical diversity and the potential for further modifi cation using nanoparticles. Conventional methods of drug delivery present several disadvantages, mainly due to off-target effects that may originate severe side and toxic effect to healthy tissues. New drug delivery systems based on nanoscale devices showing new and improved properties and developed as promising solutions for achieving desirable therapeutic effi cacy. Here, we provide a broad overview of novel nanoparticle based drug delivery systems, covering its innovations, applications and commercialization systems using both natural and synthetic polymers.
Fundamentals of Plastics Thermoforming - Original PDF
نویسندگان: خلاصه: The process of heating and reshaping plastics sheet and film materials has been in use since the beginning of the plastics industry. This process is known as thermoforming. Today this process is used for industrial products including signage, housings, and hot tubs. It also produces much of the packaging in use today including blister packs, egg cartons, and food storage containers. This process has many advantages over other methods of producing these products, but it has some limitations. This book has a twofold purpose. It is designed to be used as a text book for a course on thermoforming. It is also intended to be an application guide for professionals in the field of thermoforming including manufacturing, process and quality engineers, and managers. This book is focused on process application rather than theory. It refers to real products and processes with the intent of understanding the real issues faced in this industry. In addition to materials and processes, part and tool design are covered. Quality control is critical to any operation and this is also covered in this text. Two areas of focus in today's industry include Lean operations and environmental issues. Both of these topics are also included. Table of Contents: Introduction / Plastics Materials / Thermoforming Process Overview / The Forming Process / Part Design Mold / Tool Design / Quality Control Issues / Lean Operations / Environmental Issuesآیا کتاب مورد نظر هنوز بر روی سایت قرار نگرفته است؟ جای نگرانی نیست! کافی است بر روی گزینه سفارش کتاب کلیک کرده و درخواست خود را ثبت کنید. در کمتر از چند ساعت کتاب شما را آماده خواهیم کرد.