Polymer processing research

S. Kobayashi, T. Mizoe, Y. Iwanami, O. Otsu, S. Yokoyama, K. Kurihara, and H. Yazawa, Split polyethylene stretched material and process for producing the same, US Patent 5578373, assigned to Nippon Oil Co., Ltd. (Tokyo, JP) Nippon Petrochemicals Co., Ltd. (Tokyo, JP) Polymer Processing Research Institute Ltd. (Tokyo, JP), November 26,1996. 

H. Zamodits and J. R. A. Pearson, Flow of Polymer Melts in Extruders. Part I. The Effect of Transverse Flow and of Superposed Steady Temperature Profile, Trans. Soc. Rheol, 13, 357-385 (1969) see also B. Martin, J. R. A. Pearson, and B. Yates, On Screw Extrusion. Part I. Steady Flow Calculations, University of Cambridge, Department of Chemical Engineering, Polymer Processing Research Center, Report No. 5, 1969. 

We hope that this book will help to enhance the interest of the scientific and technical community for the fascinating field of rheology and polymer sciences. We are very proud to be surrounded by he enthusiastic colleagues of the "Rheology for polymer processing" research group and we thank them for their assistance in the preparation of this book. 

The Queen s University of Belfast Polymer Processing Research Centre Ashby Building Stranmillis Road Belfast... 

BEMflow A boundary element fluid dynamics simulation program. The Madison Group Polymer Processing Research Corporation... 

The utilization of commercially available finite element packages in the simulation of routine operations in industrial polymer processing is well established. However, these packages cannot be usually used as general research tools. Thus flexible in-house -created programs are needed to carry out the analysis required in the investigation, design and development of novel equipment and operations. 

The batch process control system we ve purchased provides only a starting point for our process research lab we must also identify and test a comprehensive set of controlled devices and real-time process instruments for chemists and engineers to use as building blocks for real feedback control systems. The technologies we are evaluating for characterization of polymer batches at all process stages include ... 

The direct application of this expression in order to estimate the degree of thermomechanic destruction in connection with polymer processing is hindered because the process rate constant depends on the temperature and intensity of thermo-mechanical impact on a material. Consequently, of significant interest is the issue of selecting an attribute for characterizing the degree of destruction. Most researchers consider it worthwhile to simply use viscosity variable (r a) or characteristic viscosity variable. 

The expected contribution of catalysis in this area will derive both from the availability, at low processing costs, of new monomers obtained from biomasses and from the development of an optimized combination of biotechnology processes with classical and new biocatalytic processes. Research priorities for catalysis in the area of polymers from renewable materials for packaging, furniture, domestic water purification and recycling include the need to develop novel catalysts, e.g., for functionalization of polymeric and dendrimeric materials, with side-chain photoactive molecular switches (to be used as smart materials), or the development of multifunctional materials, combining, for example, nanofiltration with catalytic reactivity. 

The book began as lectures and seminars at the Plastics Engineering Department of the University of Massachusetts at Lowell and to varied professional groups and companies in the United States and abroad. It draws from the author s more than 40 years of experience as a research and development (R D) and manufacturing professional in the polymer processing industry and, more recently, as an independent international consultant. 

The fact is that, in the long history of polymer processing, engineering and design has always been ahead of theory. The development of screwless (or disc-type) extruders, innovative for their time, on the basis of the earlier-discovered normal stress effect (which received the name of the Weissenberg effect) was, apparently, one.of the few exclusions. However, this example has clearly demonstrated the potential and the role of theoretical research in the progress of technology. 

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