Download or read book The Universal Polymer Backbone Concept written by Joel Matthew Pollino and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis begins with a brief analysis of the synthetic methodologies utilized in polymer science. A conclusion is drawn inferring that upper limits in molecular design are inevitable, arising as a direct consequence of the predominance of covalent strategies in the field. To address these concerns, the?universal polymer backbone? (UPB) concept has been hypothesized. A UPB has been defined as any copolymer, side-chain functionalized with multiple recognition elements that are individually capable of forming strong, directional, and reversible non-covalent bonds. Non-covalent functionalization of these scaffolds can lead to the formation of a multitude of new polymer structures, each stemming from a single parent or?universal polymer backbone?. To prepare such a UPB, isomerically pure exo-norbornene esters containing either a PdII SCS pincer complex or a diaminopyridine residue were synthesized, polymerized, and copolymerized via ROMP. All polymerizations were living under mild reaction conditions. Kinetic studies showed that the kp values are highly dependent upon the isomeric purity but completely independent of the terminal recognition units. Non-covalent functionalization of these copolymers was accomplished via 1) directed self-assembly, 2) multi-step self- assembly, and 3) one-step orthogonal self-assembly. This system shows complete specificity of each recognition motif for its complementary unit with no observable changes in the association constant upon functionalization. To explore potential applications of this UPB concept, random terpolymers possessing high concentrations of pendant alkyl chains and small amounts of recognition units were synthesized. Non-covalent crosslinking using a directed functionalization strategy resulted in dramatic increases in solution viscosities for metal crosslinked polymers with only minor changes in viscosity for hydrogen bonding motifs. The crosslinked materials were further functionalized via self-assembly by employing the second recognition motif, which gave rise to functionalized materials with tailored crosslinks. This non-covalent crosslinking/functionalization strategy could allow for rapid and tunable materials synthesis by overcoming many difficulties inherent to the preparation of covalently crosslinked polymers. Finally, the current status of the UPB concept is reviewed and methodological extensions of the concept are suggested. Evaluation of how UPBs may be used to optimize materials and their potential use in fabricating unique electro-optical materials, sensors, and drug delivery vesicles are explored.
Download or read book Hydrogen Bonded Polymers written by Wolfgang Binder and published by Springer Science & Business Media. This book was released on 2007-03-16 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control of polymeric structure is among the most important endeavours of modern macromolecular science. In particular, tailoring the positioning and strength of intermolecular forces within macromolecules by synthetic methods and thus gaining structural control over the final polymeric materials has become feasible, resulting in the field of supramolecular polymer science. Besides other intermolecular forces, hydrogen bonds are unique intermolecular forces enabling the tuning of material properties via self-assembly processes over a wide range of interactions strength ranging from several kJmol to several tens of kJmol . Central for the formation of these structures are precursor molecules of small molecular weight (usually lower than 10 000), which can assemble in solid or solution to aggregates of defined geometry.
Download or read book Functional Organic Materials written by Thomas J. J. Müller and published by John Wiley & Sons. This book was released on 2007-02-27 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely overview of the syntheses for functional pi-systems focuses on target molecules that have shown interesting properties as materials or models in physics, biology and chemistry. The unique concept allows readers to select the right synthetic strategy for success, making it invaluable for a number of industrial applications. A "must have" for everyone working in this new and rapidly expanding field.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 884 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Aspects of Polymer Self Assembly written by P. R. Sundararajan and published by John Wiley & Sons. This book was released on 2016-11-15 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering an overview of principles and techniques, this book covers all major categories of self-assembled polymers – properties, processes, and design. Each chapter focuses on morphology, applications, and advanced concepts to illustrate the advantages of polymer self-assembly across industrial and academic research. • Provides an organized, comprehensive overview of polymer self-assembly, its fundamentals, principles, and applications • Includes chapters on block copolymers, amphiphilic polymers, supramolecular polymers, rotaxenes, polymer gels, dendrimers, and small molecules in polymer matrices • Focuses on novel applications, block copolymer assembly to nanotechnology, photonics and metamaterials, molecular machines and artificial muscle, gels that can be applied to polymer science, materials science, and nanotechnology • Examines state-of-the-art concepts, like lithographic patterning and foldaxane • Discusses challenges and future outlook of a popular and emerging field of study
Download or read book Physical Properties of Polymers Handbook written by James E. Mark and published by Springer Science & Business Media. This book was released on 2007-03-21 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers concise information on the properties of polymeric materials, particularly those most relevant to physical chemistry and chemical physics. Extensive updates and revisions to each chapter include eleven new chapters on novel polymeric structures, reinforcing phases in polymers, and experiments on single polymer chains. The study of complex materials is highly interdisciplinary, and new findings are scattered among a large selection of scientific and engineering journals. This book brings together data from experts in the different disciplines contributing to the rapidly growing area of polymers and complex materials.
Download or read book Directory of Graduate Research written by American Chemical Society. Committee on Professional Training and published by . This book was released on 2005 with total page 1932 pages. Available in PDF, EPUB and Kindle. Book excerpt: Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.
Download or read book Synthesis and Characterizations of Poly organophosphazenes written by Roger De Jaeger and published by Nova Publishers. This book was released on 2004 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gleria (materials science, Padova University, Italy) and De Jaeger (chemistry, University of Sciences and Technologies, France) present the latest work in the synthesis and characterization of poly(organophosphazenes). The book opens with a general introduction on background, developments, and future perspectives, then covers the synthetic aspects of phosphazene polymers, with chapters on areas such as ambient temperature cationic condensation synthesis of polyphosphazenes and high molecular weight polyspirophosphazenes. Chapters on the characterization of phosphazene polymers in solution explore topics including thermal and mechanical properties of polyphosphazenes and electrochemical behavior of phosphazenes. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Download or read book Biomedical Engineering Concepts Methodologies Tools and Applications written by Management Association, Information Resources and published by IGI Global. This book was released on 2017-07-13 with total page 1491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technological tools and computational techniques have enhanced the healthcare industry. These advancements have led to significant progress and novel opportunities for biomedical engineering. Biomedical Engineering: Concepts, Methodologies, Tools, and Applications is an authoritative reference source for emerging scholarly research on trends, techniques, and future directions in the field of biomedical engineering technologies. Highlighting a comprehensive range of topics such as nanotechnology, biomaterials, and robotics, this multi-volume book is ideally designed for medical practitioners, professionals, students, engineers, and researchers interested in the latest developments in biomedical technology.
Download or read book Crystallization of Polymers Volume 1 Equilibrium Concepts written by Leo Mandelkern and published by Cambridge University Press. This book was released on 2002-09-19 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 2002, from an original 1964 edition, in the Crystallization of Polymers, 2nd edition Leo Mandelkern provides a self-contained treatment of polymer crystallization. All classes of macromolecules are included and the approach is through the basic disciplines of chemistry and physics. The book discusses the thermodynamics and physical properties that accompany the morphological and structural changes that occur when a collection of molecules of very high molecular weight are transformed from one state to another. Volume 1 is a presentation of the equilibrium concepts that serve as a basis for the subsequent volumes. In this volume the author shows that knowledge of the equilibrium requirements is vital to understanding all aspects of the polymer crystallization process, and the final state that eventually evolves. This book will be an invaluable reference work for all chemists, physicists and materials scientists who work in the area of polymer crystallization.
Download or read book A Prehistory of Polymer Science written by Gary Patterson Carnegie Mellon University and published by Springer Science & Business Media. This book was released on 2011-10-15 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer science is now an active and thriving community of scientists, engineers and technologists, but there was a time, not so long ago, when there was no such community. The prehistory of polymer science helps to provide key insights into current issues and historical problems. The story will be divided into an ancient period ( from Greek times to the creation of the molecular consensus), a nascent period (from Dalton to Kekule to van’t Hoff) and a period of paradigm formation and controversy (from Staudinger to Mark to Carothers). The prehistory concludes with an account of the epochal 1935 Discussion of the Faraday Society on “Polymerization”. After this meeting an active community engaged in trying to solve the central problems defined by the discussions.
Download or read book Phosphazenes written by Mario Gleria and published by Nova Publishers. This book was released on 2004 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main aim of this book is to provide a complete picture of current research on phosphazene compounds carried out around the world. The book opens with a general introduction, then moves on to cover synthetic aspects of phosphazene polymers, their characterization in solution and from the theoretical, thermal, and mechanical points of view; application aspects of poly(organophosphazenes); and the synthesis, characterization, and practical utilization of cyclophosphazenes. There is particular focus on the use of cyclophosphazenes as hydraulic fluids and additives, as cores for star polymers or dendrimers, and as starting substrates for supramolecular chemistry and nanostructured materials. The spectroscopic characterization of these compounds by NMR and Raman techniques is also discussed. Annotation : 2004 Book News, Inc., Portland, OR (booknews.com).
Download or read book Macromolecular Design of Polymeric Materials written by Hatada and published by CRC Press. This book was released on 1997-01-02 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a range of information on polymers and polymerization techniques, this text covers the gamut of polymer science from synthesis, structure and properties to function and applications. It analyzes speciality polymers, including acrylics, fluoropolymers, polysiplanes, polyphosphazenes, and inorganic and conducting polymers. The book examines the stereochemistry of polymerization and the stereoregularity of polymers.
Download or read book New Smart Materials via Metal Mediated Macromolecular Engineering written by Ezat Khosravi and published by Springer. This book was released on 2009-09-30 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control over macromolecular architecture and resulting material properties has been a central goal of polymer chemistry. There has been much interest in developing new synthetic routes to prepare smart materials with novel compositions and topologies for various applications. The considerable progress in the metal mediated macromolecular engineering over the past decade has had a major impact on the development of well-defined macromolecular architectures and the synthesis of smart materials. Particularly, remarkable strong developments have been observed for the synthesis of smart materials via four metal mediated macromolecular engineering techniques; Anionic, ROMP, ATRP and Click Chemistry. These materials have found uses in advanced microelectronics, technical and biomedical applications as well as in chemical sensors applications. This book is comprised of 27 chapters written by leading scientists from NATO and Partner Countries who have greatly contributed in the area of Anionic, ROMP, ATRP and Click Chemistry. It highlights the fundamental aspects and recent developments of these four powerful techniques and evaluate their potential in the syntheses of smart materials from complex structures (grafts, brushes, dendrimers, etc.) to nanostructures (self-assembly, nano-size, etc) for a wide range of applications. The book reports on the synthesis of a wide range of well-defined complex polymeric systems such as thermoresponsive smart polymers, star copolymers, biocompatible polymers, amphipilic smart nano structured, conducting polymers, self assembled polymers, and hyperbranced polymers.
Download or read book Molecular Biology of the Cell written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polymer Mechanochemistry written by Roman Boulatov and published by Springer. This book was released on 2015-10-17 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.
Download or read book Advances in Polymer Reaction Engineering written by and published by Academic Press. This book was released on 2020-10-31 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Polymer Reaction Engineering, Volume 56 in the Advances in Chemical Engineering series is aimed at reporting the latest advances in the field of polymer synthesis. Chapters in this new release include Polymer reaction engineering and composition control in free radical copolymers, Reactor control and on-line process monitoring in free radical emulsion polymerization, Exploiting pulsed laser polymerization to retrieve intrinsic kinetic parameters in radical polymerization, 3D printing in chemical engineering, Renewable source monomers in waterborne polymer dispersions, Importance of models and digitalization in Polymer Reaction Engineering, Recent Advances in Modelling of Radical Polymerization, and more. Covers recent advances in the control and monitoring of polymerization processes and in reactor configurations Provides modelling of polymerization reactions and up-to-date approaches to estimate reaction rate constants Includes authoritative opinions from experts in academia and industry
