Download or read book Novel Oil Resistant Cellulosic Materials written by Christian Aulin and published by . This book was released on 2009 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this study has been to prepare and characterise oil resistant cellulosic materials, ranging from model surfaces to papers and aerogels. The cellulosic materials were made oil resistant by chemical and topographic modifications, based on surface energy, surface roughness and barrier approaches. Detailed wetting studies of the prepared cellulosic materials were made using contact angle measurements and standardised penetration tests with different alkanes and oil mixtures. A significant part of the activities were devoted to the development of model cellulosic surfaces with different degrees of crystalline ordering for the wetting studies. Crystalline cellulose I, II and amorphous cellulose surfaces were prepared by spin-coating of cellulose nanocrystal or microfibrillated cellulose (MFC) dispersions, with Langmuir-Schaefer (LS) films or by a layer-by-layer (LbL) deposition technique. The formation of multilayers consisting of polyethyleneimine (PEI)/anionic MFC or cationic MFC/anionic MFC was further studied and optimized in terms of total layer thickness and adsorbed amount by combining Dual Polarization Interferometry (DPI) or Stagnation Point Adsorption Reflectrometry (SPAR) with a Quartz Crystal Microbalance with Dissipation (QCM-D). The smooth cellulosic surfaces prepared had different molecular and mesostructure properties and different surface energies as shown by X-ray diffraction, Atomic Force Microscopy (AFM) imaging, ellipsometry measurements and contact angle measurements. The cellulose model surfaces were found to be ideal for detailed wetting studies, and after the surface has been coated or covalently modified with various amounts of fluorosurfactants, the fluorinated cellulose films were used to follow the spreading mechanisms of different oil mixtures. The viscosity and surface tension of the oil mixtures, as we ll as the dispersive surface energy of the cellulose surfaces, were found to be essential parameters governing the spreading kinetics. A strong correlation was found between the surface concentration of fluorine, the dispersive surface energy and the measured contact angle of the oil mixtures. Silicon surfaces possessing structural porous characteristics were fabricated by a plasma etching process. The structured silicon surfaces were coated with sulfate-stabilized cellulose I nanocrystals using the LbL technique. These artificial intrinsically oleophilic cellulose surfaces were made highly oleophobic when coated with a thin layer of fluorinated silanes. By comparison with flat cellulose surfaces, which are oleophilic, it is demonstrated that the surface energy and the surface texture are essential factors preventing oil from spreading on the surface and, thus, inducing the observed macroscopic oleophobic properties. The use of the MFC for surface coating on base papers demonstrated very promising characteristics as packaging materials. Environmental-Scanning Electron Microscopy (E-SEM) micrographs indicated that the MFC layer reduced the sheet porosity, i.e. the dense structure formed by the nanofibers resulted in superior oil barrier properties. Attempts were made to link the procedure for preparation of the MFC dispersions to the resulting microstructure of the coatings, and film porosity and the film moisture content to the resulting permeability properties. Finally, MFC aerogels were successfully prepared by freeze-drying. The surface texture of the porous aerogels was carefully controlled by adjusting the concentration of the MFC dispersion used for the freeze-drying. The different scales of roughness of the MFC aerogels were utilised, together with the very low surface energy created by fluorination of the aerogel, to induce highly oleophobic properties.
Download or read book Novel Polymeric Materials For Environmental Applications written by Paramita Das and published by World Scientific. This book was released on 2023-03-21 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric materials play an essential and ubiquitous role in many fields including structural and packaging materials, drug development, tissue engineering, wastewater treatment, pollutant removal, separation, water purification, smart agriculture, and even road and building construction. This book contains eleven comprehensive chapters covering topics from deriving polymers from natural resources or wastes to developing novel functional polymeric materials in the form of membranes, hydrogels, foams, nanocomposites for various environmental applications. This book also discusses the utilization of waste plastics and the challenges and progress made in recycling and reusing commercially viable polymers. Such information is valuable and accelerates technological progress. Each chapter further gives the current fabrication methodology, challenges, and future scope of these materials related to their environmental applications. Thus anyone working on polymer-based materials will benefit from the comprehensive knowledge presented in this book on novel polymeric materials and their various environmental applications.
Download or read book Advanced Functional Materials from Nanopolysaccharides written by Ning Lin and published by Springer Nature. This book was released on 2019-11-15 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the latest research on nanopolysaccharides in the development of functional materials, from their preparation, properties and functional modifications to the architecture of diverse functional materials. Polysaccharide-based nanoparticles, including nanocellulose, nanochitin, and nanostarch have attracted interest in the field of nanoscience, nanotechnology, and materials science that encompasses various industrial sectors, such as biomedicine, catalyst, coating, energy, optical materials, environmental materials, construction materials, and antibacterial materials. This book establishes a fundamental framework, highlighting the architecture strategies of typical functional systems based on nanopolysaccharides and integrated analysis of their significant influence and properties to various functional behaviors of materials, to help readers to fully understand the fundamental features of nanopolysaccharides and functional materials. Addressing the potential for practical applications, the book also covers the related industrial interests and reports on highly valued products from nanopolysaccharides, providing ideas for future studies in the area. Intended both for academics and professionals who are interested in nanopolysaccharides, it is also a valuable resource for postgraduate students, researchers, and engineers involved in R&D of natural polymers, nanotechnology, and functional materials.
Download or read book Natural Polymer Drug Delivery Systems written by Saurabh Bhatia and published by Springer. This book was released on 2016-09-23 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes 200 bio-polymers, including the most recent and advanced nanotechnology applications. The applications of various bio-medical and other future potential uses are covered and examined in depth. Systematic discussion of current leading natural polymers is also included.
Download or read book Generation Development and Modifications of Natural Fibers written by Mudassar Abbas and published by BoD – Books on Demand. This book was released on 2020-03-04 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers natural fibers at the basic level as well as a few advanced approaches for recent trends in natural fibers. The core chapters include an introduction to cellulosic fibers like cotton, protein fibers like silk, and other natural fibers. Overall the book provides comprehensive knowledge of natural fibers.
Download or read book Newnes Engineering Materials Pocket Book written by William Bolton and published by Elsevier. This book was released on 2016-01-29 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Newnes Engineering Materials Pocket Book is a guidebook that provides a concise discussion on the various materials used in engineering. The coverage of the book includes ferrous and non-ferrous metals, polymeric materials, and ceramics and composites. The text first presents the terminology, and then proceeds to covering the test methods. The next nine chapters discuss the properties of various engineering materials, including copper, magnesium, nickel, and titanium. Next, the book presents the comparative properties table and materials index. The book will be of great use to both students and practitioners of engineering, especially materials engineering.
Download or read book Cellulosic Pulps Fibres and Materials written by J F Kennedy and published by Elsevier. This book was released on 2001-10-31 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the proceedings of the 10th international Cellucon Conference held in Turku/Abo, Finland, this book offers a comprehensive overview of research undertaken in all aspects of cellulosic pulps, fibes and materials including the production and processing of pulp and paper fibre.
Download or read book Cellulose Derivatives written by Thomas Heinze and published by Springer. This book was released on 2018-02-12 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes recent progress in cellulose chemistry. The last 10 years have witnessed important developments, because sustainability is a major concern. Biodegradable cellulose derivatives, in particular esters and ethers, are employed on a large scale. The recent developments in cellulose chemistry include unconventional methods for the synthesis of derivatives, introduction of novel solvents, e.g. ionic liquids, novel approaches to regioselective derivatization of cellulose, preparation of nano-particles and nano-composites for specific applications. These new developments are discussed comprehensively. This book is aimed at researchers and professionals working on cellulose and its derivatives. It fills an important gap in teaching, because most organic chemistry textbooks concentrate on the relatively simple chemistry of mono- and disaccharides. The chemistry and, more importantly, the applications of cellulose are only concisely mentioned.
Download or read book Cellulose Based Graft Copolymers written by Vijay Kumar Thakur and published by CRC Press. This book was released on 2015-04-23 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellulose-Based Graft Copolymers: Structure and Chemistry discusses the synthesis, characterization, and properties of multifunctional cellulose-based graft copolymers. Presenting the contributions of accomplished experts in the field of natural cellulosic polymers, this authoritative text: Offers an overview of cutting-edge technical accomplishmen
Download or read book Electrical Engineer s Reference Book written by G R Jones and published by Elsevier. This book was released on 2013-10-22 with total page 1392 pages. Available in PDF, EPUB and Kindle. Book excerpt: A long established reference book: radical revision for the fifteenth edition includes complete rearrangement to take in chapters on new topics and regroup the subjects covered for easy access to information.The Electrical Engineer's Reference Book, first published in 1945, maintains its original aims: to reflect the state of the art in electrical science and technology and cater for the needs of practising engineers. Most chapters have been revised and many augmented so as to deal properly with both fundamental developments and new technology and applications that have come to the fore since the fourteenth edition was published (1985). Topics covered by new chapters or radically updated sections include: * digital and programmable electronic systems * reliability analysis * EMC * power electronics * fundamental properties of materials * optical fibres * maintenance in power systems * electroheat and welding * agriculture and horticulture * aeronautic transportation * health and safety * procurement and purchasing * engineering economics
Download or read book Encyclopedia and Handbook of Materials Parts and Finishes written by Mel Schwartz and published by CRC Press. This book was released on 2016-07-06 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: A great deal of progress has been made in the development of materials, their application to structures, and their adaptation to a variety of systems and integrated across a wide range of industrial applications. This encyclopedia serves the rapidly expanding demand for information on technological developments. In addition to providing information
Download or read book Advanced Materials Source Book written by Jon Binner and published by Elsevier. This book was released on 2013-10-22 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Materials Source Book 1994-1995 presents the developments in the field of advanced materials. This book provides information regarding materials and products, legislation, patents, advances in processing and equipment, standards, and testing procedures. Organized into four chapters, this book begins with an overview of the international market trends, specific materials, or materials groups and appliances. This text then examines the applications and makes market projections on a wide range of specialty materials, including ceramics, biomaterials, electronic materials, and optical materials. Other chapters consider the healthy nature of predictions concerning Japan and parts of Europe, stating that Germany and Japan will lead the advanced structural ceramics market. This book discusses as well the developments concerning various materials. The final chapter presents a list of contact details for the organizations listed in the main text to allow the readers to make new contacts or to follow-up items of particular interest. This book is a valuable resource for private consumers.
Download or read book Cellulose written by Matheus Poletto and published by BoD – Books on Demand. This book was released on 2015-12-09 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellulose - Fundamental Aspects and Current Trends consists of 10 chapters written by international subject matter experts investigating the characteristics and current applications of this fascinating material. This book will help the reader to develop a deeper understanding about the concepts related to cellulose and the nanocellulose structure, modification, production, dissolution, and application. Biosynthesis mechanisms and medical applications of microbial cellulose are also discussed. This book will serve as the starting point for materials science researchers, engineers, and technologists from diverse backgrounds in physics, chemistry, biology, materials science, and engineering who want to know and better understand the unique characteristics of the most abundant biopolymer on earth.
Download or read book Cellulosic Materials written by Wadood Y. Hamad and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this book are twofold: 1. To provide a thorough examination of the materials science of cellulosic fibers with emphasis on the characterization of structure-property relations, and 2. To advance knowledge of how to best analyze cellulosic fibrous networks and composites, and, ultimately, engineer "novel" cellulose-based systems of superior performance and functionality. The design of new materials through the study of living systems, or bio-imitation, is burgeoning to become an established field, generally referred to as biomimetics. The latter, as with materials science, in general, prominently features multi-disciplinarity where new developments in mathematics, physics, chemistry and engineering continue to inspire novel areas of research and development. The book is structured in five chapters which provide a sequential treatment of the running theme: deformation mechanics and the physical, morphological and mechanical characterization of native cellulose fibers networks and composites. The heart of the book is Chapter 3, Damage Accumulation in Fibers, which treats the experimental methodology for fatigue testing of single fibers and the engendered results. In-depth examinations of the morphology, structure and chemical composition of native cellulose fibers, and the mechanics of deformation in these natural composite fibers are proffered in Chapters 1 and 2, respectively. The fourth chapter, Fractal Simulation of Crack Propagation, presents a fractal-based approach to modeling damage accumulation in materials. Fractals lend themselves well to modeling such randomly-oriented phenomena as crack propagation and fracture. The last chapter, Fibrous Structures: Networks and Composites, comprises analytical approaches for handling networks and composites.
Download or read book Monomers Polymers and Composites from Renewable Resources written by Mohamed Naceur Belgacem and published by Elsevier. This book was released on 2011-10-10 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progressive dwindling of fossil resources, coupled with the drastic increase in oil prices, have sparked a feverish activity in search of alternatives based on renewable resources for the production of energy. Given the predominance of petroleum- and carbon-based chemistry for the manufacture of organic chemical commodities, a similar preoccupation has recently generated numerous initiatives aimed at replacing these fossil sources with renewable counterparts. In particular, major efforts are being conducted in the field of polymer science and technology to prepare macromolecular materials based on renewable resources. The concept of the bio-refinery, viz. the rational exploitation of the vegetable biomass in terms of the separation of its components and their utilisation as such, or after suitable chemical modifications, is thus gaining momentum and considerable financial backing from both the public and private sectors. This collection of chapters, each one written by internationally recognised experts in the corresponding field, covers in a comprehensive fashion all the major aspects related to the synthesis, characterization and properties of macromolecular materials prepared using renewable resources as such, or after appropriate modifications. Thus, monomers such as terpenes and furans, oligomers like rosin and tannins, and polymers ranging from cellulose to proteins and including macromolecules synthesized by microbes, are discussed with the purpose of showing the extraordinary variety of materials that can be prepared from their intelligent exploitation. Particular emphasis has been placed on recent advances and imminent perspectives, given the incessantly growing interest that this area is experiencing in both the scientific and technological realms. Discusses bio-refining with explicit application to materials Replete with examples of applications of the concept of sustainable development Presents an impressive variety of novel macromolecular materials
Download or read book Multifunctional Polymeric Nanocomposites Based on Cellulosic Reinforcements written by Debora Puglia and published by William Andrew. This book was released on 2016-07-11 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multifunctional Polymeric Nanocomposites Based on Cellulosic Reinforcements introduces the innovative applications of polymeric materials based on nanocellulose, and covers extraction methods, functionalization approaches, and assembly methods to enable these applications. The book presents the state-of-the-art of this novel nano-filler and how it enables new applications in many different sectors, beyond existing products. With a focus on application of nano-cellulose based polymers with multifunctional activity, the book explains the methodology of nano-cellulose extraction and production and shows the potential performance benefits of these particular nanostructured polymers, for applications across different sectors, including food active packaging, energy-photovoltaics, biomedical, and filtration. The book describes how the different methodologies, functionalization, and organization at the nano-scale level could contribute to the design of required properties at macro level. The book studies the interactions between the main nano-filler with other active systems and how this interaction enables multi-functionality in the produced materials. The book is an indispensable resource for the growing number of scientists and engineers interested in the preparation and novel applications of nano-cellulose, and for industrial scientists active in formulation and fabrication of polymer products based on renewable resources. Provides insight into nanostructure formation science, and processing of polymeric materials and their characterization Offers a strong analysis of real industry needs for designing the materials Provides a well-balanced structure, including a light introduction of basic knowledge on extraction methods, functionalization approaches, and assembling focused to applications Describes how different methodologies, functionalization, and organization at the nano-scale level could contribute to the design of required properties at macro level
Download or read book Cellulose written by Abu Zahrim Yaser and published by CRC Press. This book was released on 2023-09-26 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellulose: Development, Processing, and Applications covers topics related to advanced cellulose development and processing, as well as the utilization of major agricultural and biomass waste. It discusses the utilization of cellulose from other agricultural and biomass materials, including oil palm biomass, bamboo, and other non-wood forest products in emerging areas. It covers the treatments used to improve the quality of cellulosic materials in specific applications. Following that, the book delves into the use of cellulosic materials in the application of composting science and technology. Features: Delves into the specific agriculture waste/biomass waste materials used for the advanced cellulose-based production Outlines the potential use of the covered materials for energy production and other emerging applications Includes composting technology and processes using the cellulosic materials Overviews industrial applications of cellulose from agricultural waste/biomass waste and composting technology Discusses the main agricultural waste/biomass in the Asian region This book is aimed at researchers and graduate students in chemical engineering, bioprocessing, composites, and biotechnology.
