MSE412 : Polymeric Materials
The synthesis, characterization, microstructure, rheology and properties of polymer materials. Polymers in solution and in the liquid-crystalline, crystalline and glassy states. Engineering and design properties including viscoelasticity, yielding and fracture. Forming and processing methods. Recycling and environmental issues.
Cognizant Faculty: Laine, Robertson, Kim, Lahann, Green, Love, Tuteja
- Polymer synthesis: including addition, chain growth, network formation, and copolymers.
- Molecular structure and architecture: tacticity, branching, networks, copolymers.
- Molecular weight distribution.
- Rotational isomeric states, chain configuration in dilute solutions and condensed states.
- Characterization of molecular wt. and distribution: light scattering, osmometry, intrinsic viscosity, gel permeation chromatography.
- Solidification: glass formation, crystallization, changes in thermal, physical, and mechanical properties.
- Structure and morphology of the condensed states: melt, liquid crystalline, glass, spherulites, alloys, multicomponent materials, processing effects. Thermal effects of rheological behavior. Time temperature equivalence, WLF equation, Arrhenius behavior.
- Mechanical behavior of solids: viscoelasticity, Boltzman superposition principle, failure behavior and criteria, design considerations.
- Multicomponent systems: strengthening, toughening, alloys and blends, other additives.
- Forming and shaping: injection molding, blow molding, sheet forming, film forming. Effect of processing on structure and properties.
- Material selection and design considerations.
- To provide students with an elementary understanding of the synthesis and characterization of polymers
- To teach students current knowledge of the relationship between polymer solid structure and properties.
- To teach students basic knowledge about polymeric behavior so that they can make informed decisions on how to choose an appropriate material in an application.
- To teach viscoelastic behavior and their temperature dependence, and concepts of time-temperature equivalence in various viscoelastic regimes.
- To provide students with basic knowledge about the mechanical behavior of polymers so that they can make simple predictions for design.
- To teach students current knowledge about processing techniques and how they influence the properties of polymers.
- Given a polymer structure be able to specify the generic synthesis scheme and predict typical molecular weight distribution.
- Given a polymer be able to describe technique to characterize its molecular weight and distribution, thermal behavior, mechanical behavior, and morphology.
- Given a polymer molecular mass distribution be able to calculate number, weight and viscosity average molecular weights and degree of polymerization.
- Given bond angle restrictions, bond lengths and molecular mass, be able to calculate the most probable radius of gyration, and end-to-end distance.
- Given micrographs of polymer crystals be able to identify the various features and how they depend on thermal history.
- Given calorimetric or density data be able to calculate the degree of crystallinity of semicrystalline polymers and identify phase transitions.
- Given the dynamic mechanical data of a polymer be able to predict viscoelastic behavior using time temperature equivalence and WLF equation.
- Given a viscoelastic constitutive equation be able to predict linear viscoelastic behavior using Boltzmann?s Superposition Principle.
- Be able to describe approaches to strengthening, toughening and modifying the key physical, mechanical and chemical properties of polymers.
- Given the shape of an object be able to specify the best processing techniques for achieving the shape and describe limitations and advantages.
- Given a processing technique be able to describe its effect on molecular orientation morphology and mechanical behavior.
- Given a set of performance and processing requirements for a plastic component and material data be able to select the most suitable materials for manufacturing the component.
- In-class closed book exams test all objectives for individual students.
- Weekly problem sets test all objectives under less time pressure and with the possibility of student collaboration.