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A1 Polymer Physics (Polymer Solution) L1 N3 2012(student).ppt

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Polymer Physics Introduction & Ideal Chain in Solution A.Higuchi NCU Polymer Physics (2013) 1. History of Polymer Physics April 17,18 2. Ideal chains April 24,25 3. Real chains May 1,2 4. Polymer Solution May 8,9 5. Polymer Characterization (MW measurement) Part 1 May 15,16 6. Mid-term Exam May15,16 7. Polymer Characterization (MW measurement) Part 2 May 22,23 8. Polymer Solid May 22,23 9. Rheology May 29, 30 10. C
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  Polymer Physics Introduction & Ideal Chain in Solution  A.Higuchi NCU    Polymer Physics (2013) 1.History of Polymer Physics April 17,18 2.Ideal chains April 24,25 3. Real chains May 1,2 4. Polymer Solution May 8,9 5.Polymer Characterization (MW measurement) Part 1 May 15,16 6.Mid-term Exam May15,16 7.Polymer Characterization (MW measurement) Part 2 May 22,23 8.Polymer Solid May 22,23 9.Rheology May 29, 30 10. Crystalline and glassy polymer June 5,6 11. Final exam June 12  Histroy of Polymer Science (Physics) Much of human history has been influenced by the availability of materials! History is divided into eras named after the primary materials used: The Stone Age, the Bronze Age, the Iron Age  (& Ceramics, Semiconductor,   Polymer & Composite Age ?). Chemists started polymerizing synthetic macromolecules in the middle of the nineteenth century, but they did not believe that they were creating very large molecules! The beginning of the twentieth century was that these materials (natural rubber) were believed as colloids-physically associated clusters of small molecules. Why? Many scientists actually measured high molar masses for these materials (of order 10 4 g/mol or even 10 5 g/mol), but rejected their own measurements because the values changed systematically with concentration. Loed Ernest Rutherford said: “ Science is divided into two categories, physics and stamp- collecting  .”  The wisdom of Werner Heisenberg: “Science progresses not only because it helps to explain newly discovered facts, but also because it teaches us over and over again what the word understanding may mean”    In 1920, Staudinger (1953 Nobel prize winner ) proposed the macromolecular hypothesis: Polymers are molecules made of covalently bonded elementary units, called monomers. By 1929, Carothers had synthesized a variety of polymers with well-defined structures, and the Polymer Age was born. During the following 30 years (1930-1960), the main concepts of polymer science were established. The work of Kuhn on macromolecular sizes (Chp. 2), the work of swelling a single chain in a good solvent (Chp.3), the work of Huggins and Flory (Nobel Prizer (Chemistry), 1974) on thermodynamics (Chp. 4), the work of Flory and Stockmayer on gelation (Chp. 6). Textbook: Flory, P.J. Principle of Polymer Chemistry (Cornell University Press, Ithaca, New York 1953, Nobel Prizer (Chemistry)) De Gennes (Nobel Prizer (Physics), 1991), P.-G., Scaling Concepts in Polymer Physics, Cornell University Press, Ithaca, New York 1979) Michael Rubinstein, Ralph H. Colby, Polymer Physics, Oxford University Press, 2003
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