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OCR for page 13
Polymers
Appendix A
Current and Promising Polymer Research Topics
The following summary list of current and promising polymer research topics is necessarily quite brief. The field is large and will continue to have a great impact on all levels of society for the foreseeable future.
Growing use of polymers as biomaterials
Seasickness patches
Prostheses—hip cups, lenses, blood vessels, orthopedic implants, denture bases, fillings, sutures, heart valves, organs, vascular grafts, hernia mesh, catheters, syringes, diapers, blood bags, artificial limbs, ligaments, packaging
Controlled release
Diagnostics
Emerging electronic properties of polymers
Dielectrics
Synthetic metals and battery materials
Sensors
Lithographic resists
Photonic materials
Light-emitting diodes and displays
Electrophotography
Holography
Fuel cells
Solar cells
Emergence of synthetic means for control of polymer structures
Coordination catalysts
Biocatalysis, enzyme synthesis, biological organisms for synthesizing monomers and polymers
Ring-opening metathesis polymerization
Hybrid organic-inorganic materials synthesis, sol gel formation
Dendritic polymers
Composites with tailored transport, electrical, or optical properties
Growing use of blends and composites to obtain “tailored” properties
High-strength, high-modulus fibers
Enhanced matrix choices
“Tailored” mechanical properties
High-stability toughening additives
High-temperature options
Understanding of failure mechanisms
Enhanced characterization capability through computer and electronic advances
Molecular: colligative, light scattering, centrifuged separation, NMR, UV, FTIR, RAMAN
Solutions, melts: rheology, diffusion, neutron scattering
Solid state: synchrotron x-ray and electron spectroscopy, TEM, soft x-ray microscopy, mechanical testing
Surface analysis: XPS, depth profiling, SIMS, SFA, AMF, LFM
Folding: NMR
New microscopies: confocal and scanning tunneling
Evolution of polymer theory with emphasis on computer modeling and simulation
States of matter: solutions, crystalline, amorphous, LCs, blends, block polymers, copolymers, interfaces, surfaces
OCR for page 14
Polymers
Dynamic properties: rheology, mechanical properties, electroactive
Methods: force field simulations, coarse-grained simulations
Continuing reduction of environmental threats
Elimination of toxic components
Replacement of plastics by natural materials
Recycling
Continuing search for viable recycling strategies
Collection problems: separation, contamination
Blending: properties of mixtures
Processing: to return to monomer or other feedstock type
Other means of disposal: incineration, landfill
Enhanced process control through computer and sensor applications
Molding
Extrusion
Film blowing
Coating
Continuing substitution of polymers for metals and other materials
Aircraft, space vehicles
Automobiles
Clothing
Machined parts
Construction
Electronics
Marine structures and vehicles
Growing use of polymeric materials for wide variety of military items
Bullet-proof clothing
Uniforms
Aircraft weight reduction
Growing understanding of structure-property relationships
Finite-element analysis
Flow modeling, rheology
Simulation of structures of composites, blends, crystalline polymers
Representative terms from entire chapter:
polymer research