1 edition of Stabilization of polymers and stabilizer processes. found in the catalog.
Stabilization of polymers and stabilizer processes.
|Statement||Norbert A. J. Platzer, symposium chairman.|
|Series||Advances in chemistry series -- 85.|
|Contributions||Platzer, Norbert A. J., 1911-, American Chemical Society. Division of Industrial and Engineering Chemistry.|
|LC Classifications||QD1 .A355 no. 85|
|The Physical Object|
|Pagination||xvii, 332 p.|
|Number of Pages||332|
This book provides a concise and comprehensive overview of the basic mechanisms of plastic degradation processes caused by heat and light. At its core is a detailed description of the stabilization of different polymers, including an explanation of stabilization mechanisms and the influence of commonly used additives such as fillers, flame. Conclusion Complete stabilization of polymers against photodegradatoin is not possible, hence the additives must decompose –OOH, and acts as quenchers of some excited state in the early stages of photodegradation. The “hydroperoxide” (POOH) is the most important initiator in the photooxidative process. Hence it must be quenched.
Polymer soil stabilization refers to the addition of polymers to improve the physical properties of soils, most often for geotechnical engineering, construction, or agricultural projects. Even at very small concentrations within soils, various polymers have been shown to increase water retention and reduce erosion. Stabilization and solidification (S/S) is a soil remediation process by which contaminants are rendered immobile through reactions with additives or processes. During this process, also called immobilization, fixation, or encapsulation, contaminants may be chemically bound or encapsulated into a matrix.
This type of stabilization ensures performance over the life of the finished good. Typical chemistry used is phenolic-based. Secondary – used as a process stabilizer. This type of stabilization is an effective way to protect the polymer during processing, especially when the polymer undergoes multiple heat histories. Books; Books; Thermal Stability of Polymers; Thermal Stability of Polymers The chapter on analytical methods used in studying degradative and stabilization processes helps in establishing a system of checking results of stabilization with different stabilizing systems. Ten areas of influence of stabilizer properties and expectations.
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Stabilization of Polymers and Stabilizer Processes Hardcover – January 1, by Norbert A. (symposium chair) Platzer (Author) See all formats and editions Hide other formats and editions.
Price New from Used from Author: Norbert A. (symposium chair) Platzer. Stabilization of polymers and stabilizer processes. Washington, American Chemical Society, (OCoLC) Material Type: Conference publication, Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors: Norbert A J Platzer; American Chemical Society.
Division of Industrial and Engineering Chemistry. This book provides a concise and comprehensive overview of the basic mechanisms of plastic degradation processes caused by heat and light.
At its core is a detailed description of the stabilization of different polymers, including an explanation of stabilization mechanisms and the influence of commonly used additives such as fillers, flame retardents and pigments on the stability of : Springer-Verlag Berlin Heidelberg.
Electronic books Conference papers and proceedings Congresses: Additional Physical Format: Print version: Stabilization of polymers and stabilizer processes. Washington, American Chemical Society, (DLC) (OCoLC) Material Type: Conference publication, Document, Internet resource: Document Type: Internet Resource, Computer File.
"The book is a collection of data on polymer degradation and stabilization, and on the very complex problems that require understanding of many different phenomena, including chemical mechanisms, special stress being laid on the structural changes in macromolecular chains, the influence of polymer morphology, the interaction of additives and impurities, reactive diffusion processes Price: $ This book provides a concise and comprehensive overview of the basic mechanisms of plastic degradation processes caused by heat and light.
At its core is a detailed description of the stabilization of different polymers, including an explanation of stabilization mechanisms and the influence of commonly used additives such as fillers, flame retardents and pigments on the stability of plastic.
stabilization of polymers under irradiation environments thus has become a key issue in the extensive and still growing use of radiation processing in polymer processing and. This book, the second edition of the first monograph fully devoted to UV degradation and stabilization ever published in English, has 12 chapters discussing different aspects of UV related phenomena occurring when polymeric materials.
Stabilization against thermal degradation is possible only if this process is catalyzed as is the case of PVC. Against thermooxidative degradation antioxidants can be applied.
In the following, the stabilization of different polymers against degradation during processing. Polymer Degradation and Stability deals with the degradation reactions and their control which are 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 stress, and during the useful life of the materials when oxygen.
Two types of polymers are used in the stabilization, the first one called the Urea Formaldehyde rejoin (UFR) and the second polymer is Styrene Butadiene Rubber (SBR).Theses polymers were added by Author: Lamia Ahmed. The main objective of this work is to study the effect of hydroxylamine sulfate or stabilizer states (solid vs liquid) on the storage hardening of natural rubber (NR).
Several types of natural rubber samples were prepared: unstabilized NR samples and stabilized NR samples: (i) dry NR with and parts per hundred rubber (phr) of dry hydroxylamine sulfate, and (ii) natural latex with. Dialkylhydroxybenzyl-N,N-Dimethyl Dithiocarbamates as Intermediates in the Preparation of Phenolic Polymer Stabilizers FRANCIS X.
O'SHEA Chap DOI: /bach Publication Date (Print): June 1, RETURN TO BOOK PREV Chapter NEXT. Poly(vinyl chloride) Stabilization Mechanisms.
PETER P. KLEMCHUK. PETER P. KLEMCHUK. Geigy Research Laboratories, Ardsley, N. Publication History. Published online 22 July ; Published in print 1 June ; RIGHTS & PERMISSIONS. Stabilization of Polymers and Stabilizer Processes. Chapter 1 pp The photostabilization of light-sensitive polymers involves the retardation or elimination of the various photophysical and photochemical processes that occur during photo-oxidation and may be achieved in many ways, depending on the type of stabilizer and type of degradation or oxidative mechanism that is operative in the by: 2.
As stabilizers have to protect polymers for long times, it is important that these stabilizers stay in a polymer over the lifetime, which is related to several stabilizer-related physical factors.
Synthetic W/O crude oil emulsion stabilized by polymer and surfactant was placed into cylindrical glass tubes and submitted to Turbiscan Lab Expert stability analysis. The two detectors scanned the entire height of the various samples of W/O crude oil emulsions at 55 °C for 1 h. In this paper, Cited by: Editorial Reviews "The book is a collection of data on polymer degradation and stabilization, and on the very complex problems that require understanding of many different phenomena, including chemical mechanisms, special stress being laid on the structural changes in macromolecular chains, the influence of polymer morphology, the interaction of additives Brand: American Chemical Society.
Processing is demanding for polymers: Blow molding, extrusion, recycling or fibre processing can harm plastics. With our range of antioxidants and process stabilizers, BASF offers various solutions to protect polymers from degradation or gelling during processing. 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:.
4 1 Emulsion Formation, Stability, and Rheology Flocculation This process refers to aggregation of the droplets (without any change in primary droplet size) into larger units.
It is the result of the van der Waals attraction that isFile Size: KB.Emulsion stabilization by native cellulose has been mainly hampered because of its insolubility in water.
Chemical modification is normally needed to obtain water-soluble cellulose derivatives. These modified celluloses have been widely used for a range of applications by the food, cosmetic, pharmaceutic, paint and construction industries.
In most cases, the modified Cited by: 1.chemical and physical processes which dissipate the energy of the absorbed light. The application of this information to the stabilization of polymers against ultra-violet degradation is discussed in this paper.
The term 'weathering' refers to a wide variety of chemical reactions and physical processes which occur when macromolecules, either File Size: KB.