The Morphology of Complex Materials
 

METN 757 MWF 2-2:50 Swift 720 Quarter: Autumn, 2006 LEVEL: Graduate Elective; Undergraduate by Petition (encouraged) Prof. Gregory Beaucage beaucag@uc.edu 556-3063/-5152(Lab) 492 Rhodes {551 ERC and 410 Rhodes (Labs)} http://www.eng.uc.edu/~gbeaucag/BeaucageResearchGroup.html Comments/Corrections Evaluations S99 "Polymer Morphology" Evaluations W06 2006 Quiz 1, Quiz 2, Quiz 3, Quiz 4, Quiz 5, Quiz 6, Quiz 7, Quiz 8, Final 2007 Quiz 1, Quiz 2, Quiz 3, Quiz 4, Quiz 5, Quiz 6, Quiz 7, Quiz 8, Final

1) Definition of Structural Hierarchy        (Similar topic from a Mech. Engineer in Wisconsin)       Table of Hierarchy 2) Protein Structure (2 weeks), (Display,Other Site,pdb,King)       Course Bridgewater State        Amino Acid Index, Amino Acids, Amino Acid Quiz               The Genetic Code Index (Briefly)        Secondary Structure Index        Tertiary Structure Index        Quaternary Structure Index        Evolution of cytochrome-c; Evolution of Proteins MTU        Evolution of a Protein Hormone Receptor Pair. NYTIMES        Find a Protein Structure in Chimes            PDB files            Protein Structure from XRD        How big are Proteins? 3) Polymer Chain Structure and Dynamics (3 weeks)         Persistence           Persistence Philosophical           Helix Phillips           Persistence Pittsburgh; Wikipedia Persistence           Tacticity,        Chain Scaling; Brownian Motion 1; Brownian Motion 2              Other Statistical Structural Hierarchies              Thermal Blob              Network Structures (Witten Paper)              Concentration Blob and Screening              Tensile Blob, Applications (Sukumaran, Pincus)        Statistical Dynamic Hierarchies in Polymers        Comparing Polymer and Protein Structure.pdf (Review paper) 4) Polymer Crystalline Structure from a Hierarchical perspective       (2 weeks)        Semi-Crystalline Morphology.html,             Hierarchy of Polymer Crystals (in progress)        Paul Phillips Review 1990, Phillips 1994 (7Mb pdf)        B. LOTZ, Local copy        Richard Jones,        Simple Discussion of Rate,        Hierarchy Review from A Swedish mega-course         (Local Copy Part 1; Local Copy Part 2; Local Copy Part 3)        Bassett Pictures       Jamie Hobbs' Movies, Hobbs Paper       Japanese Lamellae, AFM MIT Copy, Florida State       A nice AFM of a spherulite,  Nice Micrographs,       Spherulite Micrographs, Flow Induced Crystallization       also see XRD of Polymers (Analysis Class).html                     Crystallographic Structure of Polymers.html                     Diffraction Peaks For Polymers                     Sperling        Rate Limiting Kinetics for Crystallization        (Similar Page for Chemical Kinetics)        Fiberous Crystalline Structural Hierarchy        (Structure of processed semi-crystalline polymers) 5) Fractal Aggregate Hierarchy (2 weeks)        Smoluchowski        Aggregation 6) Overview/Summary 7) Special Topics (Student web reports)        Amphiphilic Hierarchy        Hierarchy of Cell Membranes Structure        Hierarchy in Block Copolymer Morphology        Liquid Crystalline Polymers (A Hierarchical View)        Hierarchy of Orientation in Semicrystalline Polymers        Hierarchical Structure of Nucleic Acids        Hierarchy of Spinodal Structure in Polymers        Hierarchy of Bone Structure        Hierarchy Micelles        Macroscopic Hierarchy in Nature        Hierarchy of Polymer Failure Morphologies.        Hierarchy of Spider Silk. Extraverts A Swedish Web Page with a lot of Polymer Things Morphology of Polymer Deformation.html, also see Polymer Deformation (Characterization Class).html Phase Behavior and Phase Separated Morphologies.html, also see Concentrated Solutions and Melts (Polymer Physics Class).html Junk Left Over Overview

Course Description

Within materials the main areas of study pertain to synthesis or primary production, physics and processing.  Morphology links all of these three thrusts in terms of processing-structure-property relationships.  Despite the pivotal role of Morphology, it is rarely studied as a core course in the Materials or in any other academic curriculum.  The morphology of metals and structural ceramics are based on crystallography and crystalline defect structure. This is the primary example of a simple morphology.  The structure of polymers, advanced ceramics, biomaterials and colloids are based on a hierarchical motif that serves as a definition of complex materials.  The hierarchical motif is best described in terms of levels-of-structure that build from small-scale structure to large-size-scale structure through discrete levels of morphology or structural levels.  Structural levels were first understood in terms of degree in structural biology: primary, secondary, tertiary and quaternary.  When scaling features were understood for disordered materials, hierarchical levels were described by primary particle, aggregate, agglomerate structures. In polymers, thermodynamically equilibrated hierarchical structures were described through the Blob concept which has now been understood as a fundamental approach to thermodynamic accommodation and equilibration in complex materials.  Complex materials display new mechanisms to equilibrate with their surroundings (or to accommodate kinetics) that are not available to simple morphologies and these new mechanisms are pivotal to understanding issues such as protein folding, polymer structure/property relationships and growth processes in aggregated nanomaterials.

This elective (fun/enlightenment) course will explore the Morphology of Complex Materials by first considering the hierarchical structure of proteins where the concept of structural hierarchy was first adopted (4 weeks).  The adoption of this hierarchical model to polymer chain and network structure and thermodynamic laws governing hierarchical chain structure will next be discussed (2 weeks).   Fractal ceramic/carbon aggregate structure will be summarized emphasizing kinetic growth laws (2 weeks).  Next the balance between kinetics and thermodynamics in polymer crystalline morphology  will be described (2 weeks).  Finally, an overview of a hierarchical approach in Materials Science will be given with an emphasis on structural design criterion.  Morphology of Complex Materials will provide students with the tools to understand and design complex materials using hierarchical morphological models.  Students will be familiar with semi-crystalline polymer morphology, polymer chain structure and thermodynamics, nano-structured ceramic morphology, and protein structure.  (Through web reports students may also apply the hierarchical motif to the structure of colloids, micelles, amphiphilic molecules, block copolymers, phase structure in polymers, liquid crystalline structures, orientational hierarchy, structure of nucleic acids, dendrimers and branched polymers, or macroscopic structural hierarchy for example.)

The course will be geared towards the graduate level and a basic understanding of thermodynamics, diffraction, chemistry and physics will be needed.  Undergraduates are encouraged to take this course but the course will not target the needs of undergraduates.

Grades:
-Grading will be based on 9 weekly quizzes (Friday's 1/2 hour) 9 grades
-A mandatory comprehensive final 3 quizzes

For a total of 12 equally weighted grades
These grades can be replaced with web reports applying the concept of hierarchical structure to fields not covered in the lecture.
-Reports to be posted on the web page dealing with hierarchical structure in areas not covered in the course.  The reports will involve application of the hierarchical concept so will involve synthesis on the part of the student. References should include several books as well as papers and internet resources.  Depending on the length and complexity of the report it will be used to replace between 1 and 4 quiz grades.  Students will propose the number of quiz grades they intend the report to replace.

Grading:  A = 90.0 to 100.0; B = 80.0 to 89.9; C = 70.0 to 79.9; D = 60.0 to 69.9

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