A very important factor in obtaining optimised physical properties from a semi-crystalline polymer is the size of the crystalline structures present in the material, and this crucially depends on the initiation process of crystallisation of the polymer from the melt - nucleation. This review provides information on the development of materials and methods for influencing the nucleation of polymer crystallisation in commercial processing by means of addition of low levels of adjuvants specifically selected for this purpose.
Handbook of Nucleating Agents, Second Edition gives engineers and materials scientists the information they need to increase the production rate, modify structure and morphology, improve mechanical performance, and reduce the haze of polymeric products through proper selection of nucleating agents (and/or the so-called clarifying agents). The book analyzes the existing literature paying special attention to recent developments, and is divided into 14 chapters, each of which concentrates on essential performances of nucleating agents. Chemical origin and related properties of nucleating agents are analyzed in general terms to highlight the differences in their properties and the book also provides the most essential theoretical knowledge required for proper selection and use of nucleating and clarifying agents. This includes polymer crystallization with and without nucleating agents, parameters of crystallization, essential influences on the nucleation processes, the measures of nucleation efficiency, the mechanisms of nucleation, and the effective methods of dispersion of nucleating agents. Later chapters concentrate on the application aspects in different formulations, outlining nineteen polymer processing methods which require use of nucleating agents, forty different polymers which are known to use nucleating agents, and sixteen applied examples of commercial products with nucleating agents. The final three chapters discuss the effects of nucleating agents on physical and mechanical properties of materials, the most essential analytical techniques, and health and safety in use of nucleating agents. Enables engineers to use nucleating agents more effectively to increase production rate, modify structure and morphology, and reduce haze of polymer products Provides a theoretical grounding required for proper selection and use of nucleating and clarifying agents Offers an extensive review of current applications of nucleating agents in different formulations Includes analysis of the chemical origin and related properties of nucleating agents to highlight differences in their properties
Databook of Nucleating Agents gives engineers and materials scientists the information they need to increase the production rate, modify structure and morphology, and reduce haze of polymeric products with proper selection of nucleating agents and clarifying agents. Chemical origin and related properties of nucleating agents are analyzed in general terms to highlight the differences in their properties, including the essential theoretical knowledge required for correct selection and use of nucleating and clarifying agents. This includes methods of chemical modification of nucleating agents and their deposition on suitable substrates; methods, and results of dispersion of nucleating agents, influence of their concentration and cooling rate on final result and rate of crystallization, nucleation efficiency of different products and the reasons behind it, and generally accepted mechanisms of nucleation. The book also covers application aspects in different formulations. Patent literature and research papers are extensively reviewed for different applications, and polymer processing methods which require use of nucleating agents are discussed, with an emphasis on the intricacies of use of nucleating agents in different polymers and products. - Enables engineers to use nucleating agents more effectively to increase production rate, modify structure and morphology, and reduce haze of polymer products - Provides the thorough theoretical grounding required for proper selection and use of nucleating and clarifying agents - Presents an extensive review of the current applications of nucleating agents in different formulations
The additive families are considered with an outline of the technical issues and the trends driving the markets. The main marketplaces for each additive type are discussed and the trends outlined. It contains an overview of the significant trends in the four largest plastics market sectors: packaging, construction, automotive and electrical and electronics. The report focuses on the important issues within Europe, with comment on the relevant trends in North America and Asia. The report provides discussion of the trends in material consumption and specific additive groups. It also includes brief company news and information for some of the leading additive suppliers.
This completely revised edition features new sections on glass-ceramic applications and their performance, CDC-grinding, and laser gyroscopes containing Zerodur®., providing an overview of Schott's activities for scientists, engineers, and managers.
