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Chemical Engineering 111 Unit 20 Material science chemical Engineering These days an aircraft can fly around the earth without landing or refueling. The secret of long flight lies in advanced materials that did not exist a few years ago. These aircrafts are constructed from strong, light weight polymer-fiber composite sections assembled with durable high-strength adhesives; the engine is lubricated with synthetic multi-component liquid designed to maintain lubricity for a long time under a continuous operation. These special materials are made by scientists engineers to meet the demand of modern society. The rapid advances in our understanding of how to combine substances into materials with special, high-performance properties help us the best use of these materials in sophisticated designs. The revolution in materials science engineering presents both opportunities challenges to chemical engineers. Chemical Engineers have basic background in chemistry, physics, and mathematics.  - Also, their understanding of transport phenomena, thermodynamics, reaction engineering, and process design can bring solution to the problems of modern materials technologies. Chemical engineers must understand learn to control the molecular micro-scale levels if they are to engineer the new products processes for making them. Chemical Engineers involvement / challenges with materials Polymers – the power of chemical processing for controlling materials structure on the micro scale is shown by the current generation of high strength polymer fibers, some have strength of magnitude greater than steel. During spinning, the oriented regions in the liquid phase align with the fiber axis to give the resulting fiber high strength rigidity. Ultra high strength fibers of polyethylene have been prepared by gel spinning. Chemical engineers continue to design new processes for the low co