Antioxidant Polymers
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| Author | : Giuseppe Cirillo |
| Publisher | : John Wiley & Sons |
| Total Pages | : 601 |
| Release | : 2012-06-07 |
| Genre | : Technology & Engineering |
| ISBN | : 1118445511 |
Antioxidant Polymers is an exhaustive overview of the recent developments in the field of polymeric materials showing antioxidant properties. This research area has grown rapidly in the last decade because antioxidant polymers have wide industry applications ranging from materials science to biomedical, pharmaceuticals and cosmetics.
| Author | : G. Pritchard |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 650 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 9401158622 |
Although plastics are extremely successful commercially, they would never reach acceptable performance standards either in properties or processing without the incorporation of additives. With the inclusion of additives, plastics can be used in a variety of areas competing directly with other materials, but there are still many challenges to overcome. Some additives are severely restricted by legislation, others interfere with each other-in short their effectiveness varies with circumstances. Plastics Additives explains these issues in an alphabetical format making them easily accessible to readers, enabling them to find specific information on a specific topic. Each additive is the subject of one or more articles, providing a suffinct account of each given topic. An international group of experts in additive and polymer science, from many world class companies and institutes, explain the recent rapid changes in additive technology. They cover novel additives (scorch inhibitors, compatibilizers, surface-modified particulates etc.), the established varieties (antioxidants, biocides, antistatic agents, nucleating agents, fillers, fibres, impact modifiers, plasticizers) and many others, the articles also consider environmental concerns, interactions between additives and legislative change. With a quick reference guide and introductory articles that provide the non-specialist and newcomer with relevant information, this reference book is essential reading for anyone concerned with plastics and additives.
| Author | : George Wypych |
| Publisher | : ChemTec Publishing |
| Total Pages | : 244 |
| Release | : 2020-03-12 |
| Genre | : Science |
| ISBN | : 1927885590 |
Handbook of Antioxidants provides a wealth of information on the mechanics, practical effects and applications of a wide range of antioxidants. The book starts by introducing the general concepts relating to antioxidants and their application, then segues into a discussion on existing natural and synthetic antioxidants, characterizing their general properties and application. Formation and action of oxidizing species in living organisms, ambient air, industrial environments, and chemical reactions are covered next. Subsequent chapters cover the theories and mechanisms of stabilization, performance indicators, antioxidant selection, degradation and stabilization of different polymers and rubbers, specific effects on other components of formulation, and analytical methods. This book is an excellent companion to the Databook of Antioxidants which has also been published recently. Both books supplement each other without repeating the same information - one contains data another theory, mechanisms of action, practical effects and implications of application.
| Author | : Thomas Dziubla |
| Publisher | : Academic Press |
| Total Pages | : 405 |
| Release | : 2016-05-31 |
| Genre | : Technology & Engineering |
| ISBN | : 0128032707 |
Oxidative Stress and Biomaterials provides readers with the latest information on biomaterials and the oxidative stress that can pose an especially troubling challenge to their biocompatibility, especially given the fact that, at the cellular level, the tissue environment is a harsh landscape of precipitating proteins, infiltrating leukocytes, released oxidants, and fluctuations of pH which, even with the slightest shift in stasis, can induce a perpetual state of chronic inflammation. No material is 100% non-inflammatory, non-toxic, non-teratogenic, non-carcinogenic, non-thrombogenic, and non-immunogenic in all biological settings and situations. In this embattled terrain, the most we can hope for from the biomaterials we design is a type of "meso-compatibility, a material which can remain functional and benign for as long as required without succumbing to this cellular onslaught and inducing a local inflammatory reaction. - Explores the challenges of designing and using biomaterials in order to minimize oxidative stress, reducing patterns of chronic inflammation and cell death - Brings together the two fields of biomaterials and the biology of oxidative stress - Provides approaches for the design of biomaterials with improved biocompatibility
| Author | : Giuseppe Cirillo |
| Publisher | : John Wiley & Sons |
| Total Pages | : 354 |
| Release | : 2015-03-18 |
| Genre | : Technology & Engineering |
| ISBN | : 1119108578 |
Polymers are an important part in everyday life; products made from polymers range from sophisticated articles, such as biomaterials, to aerospace materials. One of the reasons for the great popularity exhibited by polymers is their ease of processing. Polymer properties can be tailored to meet specific needs by varying the “atomic composition” of the repeat structure, by varying molecular weight and by the incorporation (via covalent and non-covalent interactions) of an enormous range of compounds to impart specific activities. In food science, the use of polymeric materials is widely explored, from both an engineering and a nutraceutical point of view. Regarding the engineering application, researchers have discovered the most suitable materials for intelligent packaging which preserves the food quality and prolongs the shelf-life of the products. Furthermore, in agriculture, specific functionalized polymers are used to increase the efficiency of treatments and reduce the environmental pollution. In the nutraceutical field, because consumers are increasingly conscious of the relationship between diet and health, the consumption of high quality foods has been growing continuously. Different compounds (e.g. high quality proteins, lipids and polysaccharides) are well known to contribute to the enhancement of human health by different mechanisms, reducing the risk of cardiovascular disease, coronary disease, and hypertension. This second volume focuses on the importance of polymers and functional food and in food processing
| Author | : Jiri E. Kresta |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 403 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 1461327970 |
Ever since the beginning of the plastics and rubber industry, it was realized that useful products could be produced only if cer tain additives were incorporated into polymers. With the help of these additives, when physically dispersed in a polymer matrix, it has been possible to improve stability against thermal, oxidative, UV, hydrolytic and biological degradation, mechanical properties, flammability, cost, and processibility of plastics. The enormous growth of the volume of plastics consumed by modern society, and new application areas for plastics, have created a demand for new, better additives and better understanding of their functions in polymer systems. As a result of these trends there is a need for sharing of information on progress achieved in the area of polymer additives among engineers and scientists of the plastics industry and academia. This book is based on expanded and updated papers originally presented at the International Symposium on Polymer Additives, which was held in Las Vegas, Nevada, and was sponsored by the American Chemical Society, Division of Polymeric Materials Science and Engi neering. The book is divided into five parts which cover advances in various areas of polymer additives. The first part is devoted to the progress in understanding of UV degradation and stabilization of various polymers. Oxidation degradation and stabilization of plastic materials is covered in the second part. New developments in the stabilization of PVC are presented in the third part.
| Author | : George Wypych |
| Publisher | : Elsevier |
| Total Pages | : 245 |
| Release | : 2020-03-06 |
| Genre | : Science |
| ISBN | : 1927885604 |
Handbook of Antioxidants provides a wealth of information on the mechanics, practical effects and applications of a wide range of antioxidants. The book starts by introducing the general concepts relating to antioxidants and their application, then segues into a discussion on existing natural and synthetic antioxidants, characterizing their general properties and application. Formation and action of oxidizing species in living organisms, ambient air, industrial environments, and chemical reactions are covered next. Subsequent chapters cover the theories and mechanisms of stabilization, performance indicators, antioxidant selection, degradation and stabilization of different polymers and rubbers, specific effects on other components of formulation, and analytical methods. This book is an excellent companion to the Databook of Antioxidants which has also been published recently. Both books supplement each other without repeating the same information – one contains data another theory, mechanisms of action, practical effects and implications of application. - Provides theory, mechanisms of action, practical effects and implications of application for an array of antioxidants - Looks at different aspects of phenomena occurring when materials are exposed to ambient air which contains oxygen, ozone, singlet oxygen, and other oxidizing species (radicals) - Covers natural and synthetic antioxidants, their stability, performance indicators, degradation and stabilization mechanics, and more
| Author | : G. Scott |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 336 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 9401138389 |
The purpose of this publication is two-fold. In the first place it is intended to review progress in the development of practical stabilising systems for a wide range of polymers and applications. A complemen tary and ultimately more important objective is to accommodate these practical developments within the framework of antioxidant theory, since there can be little question that further major advances in the practice of stabilisation technology will only be possible on a firm mechanistic foundation. With the continual increase in the number of commercial anti oxidants and stabilisers, often functioning by mechanisms not even considered ten years ago, there is a need for a general theory which will allow the potential user to predict the performance of a particular antioxidant structure under specific practical conditions. Any such predictive tool must involve a simplified kinetic approach to inhibited oxidation and, in Chapter 1, Denisov outlines a possible mechanistic approach with the potential to predict the most useful antioxidant to use and the limits of its usefulness. In Chapter 2, Schwetlick reviews the current state of knowledge on the antioxidant mechanisms of the phosphite esters with particular emphasis on their catalytic peroxidolytic activity. Dithiophosphate v vi PREFACE derivatives show a similar behaviour but for quite different reasons and, in Chapter 3, AI-Malaika reviews information available from analytical studies, particularly using 31p_NMR spectroscopy, to elucid ate the complex chemistry that leads to the formation of the antioxidant -active agents.
| Author | : Sajal Chakraborti |
| Publisher | : Springer Nature |
| Total Pages | : 4078 |
| Release | : 2022-09-28 |
| Genre | : Medical |
| ISBN | : 9811654220 |
This reference book, which is the second volume of Targeting Oxidative Stress in Cancer, explores oxidative stress as the potential therapeutic target for cancer therapy. The initial chapters discuss the molecular mechanisms of oxidative stress and its effects on different signaling pathways. Subsequently, the sections examine the impact of redox signaling on tumor cell proliferation and consider the therapeutic potential of dietary phytochemicals and nutraceuticals in reactive oxygen species (ROS)-induced cancer. In turn, it examines the evidence supporting the use of Vitamin C in cancer management, before presenting various synthetic and natural compounds that have therapeutic implications for oxidative stress-induced cancer. It also explores the correlation between non-coding RNA and oxidative stress. Furthermore, the book summarizes the role of stem cells in ROS-induced cancer therapy and reviews the therapeutic applications of nanoparticles to alter redox haemostasis in cancer cells. Lastly, it explores heat-shock proteins, ubiquitin ligases, and probiotics as potential therapeutic agents in ROS-mediated cancer. This book is a useful resource for basic and translational scientists as well as clinicians interested in the field of oxidative stress and cancer therapy.
| Author | : Paul D Prenzler |
| Publisher | : Royal Society of Chemistry |
| Total Pages | : 419 |
| Release | : 2021-10-12 |
| Genre | : Science |
| ISBN | : 1839165340 |
The field of antioxidant research has grown rapidly over the last 30 years and shows no sign of slowing down. In order to understand how antioxidants work, it is essential to understand how their activity is measured. However, antioxidant activity measurements are controversial and their value has been challenged. This book addresses a number of the controversies on antioxidant testing methods. Specifically, the book highlights the importance of context, helping the reader to decide what methods are most appropriate for different situations, how the results can be interpreted and what information may be inferred from the data. There are a multiplicity of methods for measuring activity, with no standardized method approved for in vitro or in vivo testing. In order to select an appropriate method, a thorough knowledge of the processes associated with reduction-oxidation is essential, leading to an improved understanding and use of activity measurements and the associated data. The book presents background information, in a unique style, which is designed to assist readers to grasp the fundamentals of redox processes, as well as thermodynamics and kinetics, which are essential to later chapters. Recovery and extraction of antioxidants from diverse matrices are presented in a clear and logical fashion along with methods used to determine antioxidant activity from a mechanistic perspective. Other chapters present current methodologies used for activity testing in different sample types ranging from foods and plants, to body fluids and even to packaging, but always with a strong emphasis on the nature of the sample and the underlying chemistry of the method. A number of emerging techniques for assessing antioxidant behaviour, namely, electrochemical methods, chip technology exploiting microfluidic devices, metabolomics plus studies of gene and protein expression, are examined. Ultimately, these techniques will be involved in generation of "big data" for which an understanding of chemometrics will be essential in drawing valid conclusions. The book is written to appeal to a wide audience, but will be particularly helpful for any researchers who are attempting to make sense of the vast literature and often conflicting messages on antioxidant activity.
