Hybridized Polymer Processing Systems

A hybridized processing system to directly obtain a finished product can be an ideal process that can prevent undesirable phenomena like thermal degradation. The hybridized system, for example, which combines twin screw extrusion and injection molding, has the following advantages that are expected to be in practice in the near future  

Minimization of thermal degradation by direct molding/shaping. 

Easy fixation and control of the morphology obtained firom twin screw reactive blending. 

Linked, sequential processes for polymerizing through to shaping, even for a polymeric material with poor processability such as high viscosity or high heat-sensitivity. 

Manufacturing cost reduction due to the elimination of pelletizing and one-step melting. 

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Our attempt to obtain a silicon-boron hybrid polymer system was successful. Their complicated crosslinkable structure acts as a thermosetting resin to give thermal and mechanical stability with good processability. Carborane hybridization gives exceptional non-flammability. This is a kind of organic-inorganic hybrid system that has plastic versatility and ceramic stability. 

The Advanced Materials Series provides recent advancements of the fascinating field of advanced materials science and technology, particularly in the area of structure, synthesis and processing, characterization, advanced-state properties, and applications. The volumes will cover theoretical and experimental approaches of molecular device materials, biomimetic materials, hybrid-type composite materials, functionalized polymers, supramolecular systems, information- and energy-transfer materials, biobased and biodegradable or environmental friendly materials. Each volume will be devoted to one broad subject and the multidisciplinary aspects will be drawn out in full. 

We proceeded in using the toll manufactured RBI-201 material in hybrid PU/RB1-201 polymer foam formulation, and details of the foaming procedure is shown in Fig. 4.5.5. We noted that this toll manufactured RBl-201 was readily dispersed in THF and it can be reasonably dispersed in the polyol of the PU formulation. Thus, foam samples were made from the flow hybrid foaming process as well. The PU formulation employed was the so-called Tigerfoam system. 

Combining peptide sequences and synthetic polymers is useful not only for enhanced control over nanoscale structure formation, but also for production of biologically interactive materials. Biomimetic hybrid polymers may also produce sophisticated superstructures with new material properties. Smart materials based on polypeptides may reversibly change conformation and associated properties in response to an environmental stimulus, such as a shift in pH or temperature (Rodriguez-Hernandez et ah, 2005). Polypeptide block copolymers may also be used as model systems to study generic self-assembly processes in natural proteins. Obviously, such materials could be of significant interest for a variety of biomedical and bioanalytical applications. 

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