(510at) Encapsulated Fiber Mesh Composite Systems

Polymer-polymer composite systems combine two distinct polymeric phases to conduct functions that a single phase cannot complete. The two phases work as complementary components of an integer, but also interfere with each other. One application is the drug delivery systems, in which a biodegradable fiber phase functions as a drug carrier while the hydrogel matrix provides mechanical strength. The matrix also has influence on the degradation of the fiber phase and drug release rate. Drug release kinetics are used to evaluate this composite system. The other application is in the area of high-performance tough materials. The resin matrices have high moduli but are brittle. The interlaminar fiber phase can absorb and dissipate energy upon impact. Tough materials are developed by tailoring both phases. Thermomechanical behavior, fracture toughness, flexural properties and interfacial properties are used to evaluate the tough composite system.