1 edition of Degradation and stabilisation of aromatic polyesters found in the catalog.
Degradation and stabilisation of aromatic polyesters
Stuart F. Fairgrieve
|LC Classifications||QD381.9.D47 F35 2009|
|The Physical Object|
|Pagination||x, 268 p. :|
|Number of Pages||268|
The polymer's in vitro degradation profile exhibited an induction period up to 10 days in which degradation product concentration in the media was minimal, followed by a period of stable release of the biocompatible degradation product. Scanning electron microscope images and molecular weight changes of the polymer matrices confirm that this Cited by: 4. 1. Introduction. Aromatic polyimide films have been extensively utilized in a variety of applications from microelectronic and optoelectronic devices to aerospace industries, owing to its excellent thermal stability, dielectric and electrical insulating performance, mechanical properties, and chemical and radiation resistance [1,2,3,4,5,6,7].With the rapid development of high-tech fields Author: Fulin Liu, Guangqiang Fang, Haixia Yang, Shiyong Yang, Xuezhong Zhang, Zhijie Zhang. Polymer Degradation and Stability, 44(2), Klein, Michael T. / Thermal stability and degradation of aromatic polyamides. 1. Pyrolysis and hydrolysis pathways, kinetics and mechanisms of N-phenylbenzamide. In: Polymer Degradation and Stability. ; Vol. 44, Cited by:
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Polymer Degradation and Stabilization (Polymers - Properties and Applications (8)) Softcover reprint of the original 1st ed. Edition by W. Lincoln Hawkins (Author) › Visit Amazon's W. Lincoln Hawkins Page. Find all the books, read about the author, and more. Format: Paperback.
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Cited by: The study of polymer degradation and stabilisation is of considerable practical importance as the industrial uses of polymeric materials continue to expand. Degradation and stabilisation of aromatic polyesters book In this book, the authors lucidly relate technological phenomena to the chemistry and physics of degradation and stabilisation processes.
Degradation embraces a variety of technologically Cited by: The stabilization of polymers is still undergoing a transition from an art to a science as mechanisms of degradation become more fully Degradation and stabilisation of aromatic polyesters book.
A scientific approach to stabilization can only be approached when there is an understanding of the reactions that lead to degradation. Oxidation of the copolyester had a chain character and increased over time, Degradation and stabilisation of aromatic polyesters book in the case of irradiated PBAT.
Despite the presence of aromatic rings dissipating energy, the material is susceptible to ionizing by: 3. This book contains all Degradation and stabilisation of aromatic polyesters book required to design successful stabilization formula for any product made out of PVC.
Separate chapters review information on chemical structure, PVC manufacturing technology, morphology, degradation by thermal energy, UV, gamma, other forms of radiation, mechanodegradation, and chemical degradation. The stability of polyurethane elastomers based on different building blocks of macrodiols (polyester, polyether, polycarbonate, polybutadiene, and polyisobutylene), isocyanates (aromatic.
Exfoliated black phosphorus (BP), as a monolayer or few-layer material, has attracted tremendous attention owing to its unique physical properties for applications ranging from optoelectronics to photocatalytic hydrogen production.
Approaching intrinsic properties has been, however, challenged by chemical reactions and structure degradation of BP under ambient conditions. Cited by: Polymer Degradation and Stability deals with the degradation reactions and their control which Degradation and stabilisation of aromatic polyesters book a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology.
Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical. Since degradation is a chemical process it affects not only the chemical composition of the polymer but also various physical parameters such as chain conformation, molecular weight, molecular weight distribution, crystallinity, chain flexibility, crosslinking, branching, colour of the polymer, haziness etc.
Different polyester compositions Cited by: During the past decade, the field of polymer degradation and stabilization has become a subject of central importance in polymer science and technology.
This book provides a fundamental source of information designed for those with only a basic understanding of the background of the field. The stability of polyurethane elastomers based on different building blocks of macrodiols (polyester, polyether, polycarbonate, polybutadiene, and polyisobutylene), isocyanates (aromatic and aliphatic), and chain extenders (diols, triols, and diamines) are summarised, and the mechanisms of different types of degradation are by: Degradation and stabilisation of aromatic polyesters.
[Stuart F Fairgrieve] -- "This Polymer Bulletin is a current awareness service from the Polymer Library, the world's largest database dedicated to polymer literature.
Degradation of pure aromatic polyesters Pure aromatic polyesters like PET or PBT are quite insensitive to any hydrolytic degradation. Under drastic chemical conditions (e.g. sulfuric acid at °C) hydrolysis of such polyesters can be used for recycling purposes (Yoshioka et al., ) or for analysis of the polymer structure (Cagiao et al., ).Cited by: Identification of breakdown products from environmental degradation is important for understanding the degradation process, environmental interaction and impact of degradable polymers.
With regard to degradability aliphatic polyesters are a Cited by: polymer chain length known as Intrinsic viscosity or IV and the value for a typical fiber grade polymer is dl/g in 60/40 w/w mixture of phenol and tetrachloroethane solvent .
The IV in the latter solvent is related to Mv (Viscosity average molecular weight) of the polymer by the Mark Howink equation (Equation 1). η * 10 4 MvFile Size: 1MB. The mechanism of degradation of aliphatic as well as aliphatic-aromatic co-polyesters has also been discussed.
The degradation ability of microorganisms against various polyesters might be useful for the treatment and recycling of biodegradable wastes or bioremediation of the polyester-contaminated by: Fundamentals of Polymer Degradation and Stabilization rd Edition by N.S. Allen (Author), M.
Edge (Author) ISBN Price: $ Identification of breakdown products from environmental degradation is important for understanding the degradation process, environmental interaction and impact of degradable polymers.
With regard to degradability aliphatic polyesters are aparticularly interesting group of polymers. Polymer Degradation and Stabilization (Polymers - Properties and Applications) [Hawkins, W. L., Harwood, H. J.] on *FREE* shipping on qualifying offers.
Polymer Degradation and Stabilization (Polymers - Properties and Applications). Thermophilic anaerobic biodegradation test and analysis of eubacteria involved in anaerobic biodegradation of four specified biodegradable polyesters.
Polymer Degradation and Stability98, DOI: /egradstabCited by: The dependence of the enzymatic degradation of aliphatic–aromatic copolyesters on the polymer structure has been investigated.
A number of defined model copolyesters containing terephthalate units as aromatic component were by: Weight loss occurs in one step—the onset of degradation begins at °C, followed by an increase in degradation rate, which levels above °C.
The aromatic polyester content in UMPIR2 resulted in a slightly greater weight loss below °C. Above this temperature, however, the UMPIR2 showed greater by: Polymer Degradation and Stability provides a forum for the publication of their work.
Types of paper Original research papers; review articles; technical notes; short reports; news and announcements; book reviews; letters to the editors. Papers essentially of an advertising nature will not be accepted.
Part of the Advances in Polymer Science book series (POLYMER, volume ) Abstract Amines constitute a family of stabilizers protecting plastics and coatings against free radical oxidative degradation and diene based elastomers against both ozonation and by: Journal of Applied Polymer Science.
VolumeIssue Article. Radiation degradation and stability of PBAT: copolymer of aromatic and aliphatic esters. Magdalena Rzepna. Institute of Nuclear Chemistry and Technology, Doro Warsaw 03‐, by: 3. The degradation activities of bacterium, Roseateles depolymerans TB and its depolymerases Est-H and Est-L against aliphatic as well as aliphatic aromatic co-polyesters, were investigated.
Effect of comonomers in the polyester. The rate of alkaline degradation of polyesters is dependent on the chemical composition and structure of polymer. The cationic dyeable polyesters hydrolyze more rapidly than ordinary polyester, because such polyesters contain the strongly electron-attracting sulphonate group [68,69,70].
The most Cited by: 6. COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle.
Types of polymers degradation. The degradation of polymers usually starts at the outer surface and penetrates gradually into the bulk of the material Blaga ().Polymer degradation can be caused by heat (thermal degradation), light (photodegradation), ionizing radiation (radio degradation), mechanical action, or by fungi, bacteria, yeasts, algae, and their Cited by: Get this from a library.
Degradation and stabilisation of aromatic polyesters. [Stuart F Fairgrieve]. is a platform for academics to share research papers. Biodegradation of polyester containing aromatic constituents Article Literature Review in Journal of Biotechnology 86(2) April with Reads How we measure 'reads'.
Polymer Degradation and Stabilization. Tuan Quoc Nguyen. Search for more papers by this author General Features of Polymer Degradation. Degradation Detection Methods. Thermal Degradation.
Theoretical Aspects Regarding Polymer Photochemistry, Photochemical Behavior of Multicomponent Polymeric-based Materials, /_1 Cited by: 5. Degradation of Solid Polyester TPU Cubes.
Table 2 shows the weight loss of Elastollan B85A and C85A determined after enzymatic degradation at 60–70 °C for h. Due to their lower thermal stability, Tcur and Tcur were not used for TPU degradation experiments at 70 °C.
No significant weight loss was detected with. Additionally, we show that PETase degrades another semiaromatic polyester, polyethylene-2,5-furandicarboxylate (PEF), which is an emerging, bioderived PET replacement with improved barrier properties.
In contrast, PETase does not degrade aliphatic polyesters, suggesting that it is generally an aromatic by: Degradation and Stabilisation of Polyamides; the most critical aspect of formulation and performance of this polymer, is discussed in detail.
This book contains all information required to design successful stabilization formula for any product made out of PVC.\ucbr\ue\ucbr\ueOnly four books have ever been published on PVC.
Understanding the thermal degradation of polymers is of paramount importance for developing a rational technology of polymer processing and higher-temperature applications. Controlling degradation requires understanding of many different phenomena, including chemical mechanisms, the influence of polymer morphology, the complexities of oxidation chemistry.
Many natural and synthetic polymers are attacked by ultraviolet radiation, and products using these materials may crack or disintegrate if they are not problem is known as UV degradation, and is a common problem in products exposed to uous exposure is a more serious problem than intermittent exposure, since attack is dependent on the extent and.
The dependence of the enzymatic degradation of aliphatic–aromatic copolyesters on the polymer structure has been investigated.
A number of. Covering both small molecule and polymer solar cells, Stability and Degradation of Organic and Polymer Solar Cells summarizes the state of the art understanding of stability and provides a detailed analysis of the mechanisms by which degradation occurs.
Following an introductory chapter which compares different photovoltaic technologies, the.Two liquid crystalline aromatic polyesters were studied by isothermal degradation techniques. Both polymers contain a ebook phenyl side chain ebook.
However, one contains a styryl side chain and the other contains an a-methylstyryl side chain. Isothermal degradations under nitrogen and air were carried on both polymers. From the GC/MS analysis of the cold traps, it showed Author: Scott Lee.