Laminates will be subjected to accelerated testing in heat aging, in a weatherometer and a humidity chamber. thin films of polyvinyl fluoride, polycarbonate and polymethyl methacryate will be used as controls. any changes in percent transmission, adhesion, micro-structure and permeability will be… More

The overall objective is to develop improved composite filling materials suitable for restoring posterior teeth as well as anterior. the goal is permanence. two primary objectives are to increase the concentration of filler to 90% by weight and to maximize the adhesion between the resin and filler.… More

A series of elastomeric silicones and silicone-imides will be synthesized and screened for application as solar cell encapsulants in photovoltaic arrays to be deployed in space. key physical properties such as the tensile modulus, optical absorbance over 300 nm-1100 nm, long-term stability in vacuum… More

The use of organic matrix composites in high performance aircrafts requires a matrix material possessing a combination of high stiffness and strength at operating conditions. this proposal outlines a research program aimed at synthesis, characterization and crosslinking of a novel crystallizable… More

The primary objective of this research is to develop new andimproved biocompatible restorative resins for use in dentistry. the strategy for achieving this objective is totailor-make liquid, high-molecular weight polymers that can be crosslinked with minimal shrinkage to hard, optically transparent… More

The use of continuous and pulsed wave lasers in target designation and combat situations is increasing. there is therefore a need to protect combat personnel and sensitive sensing equipment from accidental exposure to laser radiation. the technical objectives of this program are to develop,… More

The overall objective of this project is to demonstrate the feasibility of preparing low viscosity, room temperature curable, tough, high modulus epoxy casting materials using poly(aryl ether ketones) and poly(aryl ether sulfone ketone) copolymers as impact modifiers. tough, high modulus casting… More

There is a need for a technology base that will permit the suppression of infrared signatures contributing to aircraft detection or missile guidance against aircraft. materials and coatings with reduced emissivity or which can deflect aircraft radiance are desired. in view of this, the present… More

The use of lasers in the armed forces is increasing rapidly and therefore, suitable filters are needed for protecting the eyes of laboratory and field personnel from accidental or deliberate exposure to hazardous laser radiation. recent work at gumbs has shown that it is feasible to construct novel,… More

A novel technology for fabrication of broad-band, dynamic (switchable), passive, ultrafast (subnanosecond rise and fall times) laser shields is proposed, based on interfacing semiconductor (sc) electrodes to conducting polymers (cps). the cp normally switched from a transparent to an opaque state… More

There is a need for a single filter that will protect the eyes of personnel against frequency agile lasers without degrading essential visual performance. dynamic, reversible and broadband ocular shields under development at gumbs optically and passively switch from a transparent state to an… More

The employment of continuous and pulsed lasers in target designation and combat situations is increasing, creating the need for continuously and reversibly switching devices to protect combat personnel and sensitive sensing equipment with tunable laser systems necissitating broad band protection.… More

Very recent unrelated work at gumbs has yielded a breakthrough in conducting polymer technology, with soluble,processible polymers with 6% or higher w/w solubility in organic solvents, and homogeneous, reproducible thin films with conductivities as high as 1 s/cm; the present work willseek to… More

This proposal outlines a research and development program to coat electronics encapsulating materials with conducting polymers to provide shielding from radiated electromagnetic radiation. the shielding properties of different conducting polymers at different thicknesses to microwave energy will be… More

This proposal outlines a research and development program to tailormake emulsion acrylic copolymers which are odorless, non-toxic, and pressure sensitive. the water-insoluble, biocompatible adhesives will contain the minimum concentration of hydrophilic units to permit strong bonding to wet human… More

Addressing the need for light-weight corrosion resistant materials for emi shielding, the novel technology proposed herein utilizes soluble conducting (semiconducting) polymers developed in gumb's laboratories for unrelated applications. these polymers have 6% w/w or higher solubility in organic… More

A novel technology for passive, switchable (dynamic), broad-band (vis. -nir), ultrafast (sub-ns) laser shields is offered, based on interfacing inorganic semiconductor electrode to conducting polymers. the conducting polymers, normally switched electrochemically between opaque and transparent… More

The objective of phase i is to determine the feasibility of preparing stable copolymers of sulfur with guayule resin. the kinetics and mechanism of both the copolymerization and depolymerization reactions will be studied and the properties of the stable copolymers will be measured. the heterogeneous… More

Ddressing the need for highly conductive, ir and visible transparent optical window materials, the proposed work seeks to use novel soluble conducting polymers developed in these laboratories in unrelated work which have demonstrated high transparency across the visible and much of the ir regions… More

A novel class of high temperature superconductors, oxygenated cu phthalocyanines, is prepared which has good match between cu and oxygen energy levels as in extant high temperature superconductors as well as firm pinning of magnetic flux due to a high density of defects. these two properties yield… More

Recent unrelated work at the company has yielded a major breakthrough in conducting-polymer technology, with soluble,processible polymers with high solubility in organic solvents, and homogeneous, reproducible thin films with conductivities as high as 1,000 s/cm. the present work seeks to further… More

Broad-band, dynamic (switchable), solid-state, ultrafast (sub-ns) optical shutter activated by a laser or other high intensity radiation source is provided based on novel interfaces of inorganic semiconductor (SC) electrodes with conducting polymers (CPs). The CPs, normally switched… More

There is a need for flexible EMI shielding material in the construction of tactical shelters. This proposal outlines a programs to develop such a material using wire mesh or knitted wire mesh sandwiched between two sheets of an electrically conducting copolymer which is elastomeric in nature. The… More

er interface interactions.

The planned research concerns the development of conducting polymer/sol-gel ceramic composites as durable electrochromic coatings for energy-conserving applications such as day lighting and thermal control. conducting polymers provide an attractive opportunity for fabricating smart windows because… More

This proposal concerns the development new high surface area (HSA) electrode materials that can aid the technological advances of batteries and fuel cells. HSA electrodes can significantly increase the power-density of batteries and fuel cells by enhancing the heterogeneous electrochemical reaction… More

This proposal aims to design and synthesize composites of sol-gel ceramics and conducting polymers for repair of conducting paths in polyceramic systems. sol-gel ceramic component of the composites will function as adhesive bonding while conducting polymers provide electrically conducting path. the… More

Not Available The objective of this proposal is to explore concepts and technologies for lightweight, low power, high data rate, secure and standards based satellite local area network (LAN) and associated inter-satellite link (ISLs) communication systems. An operational concept will be defined… More

72801S03-I This project addresses the need to control airborne radiological contamination by developing a novel fixative and assessing its ability to both affix contamination and contain dispersible alpha contamination, completely and permanently and at low cost. The specific goal will be the… More

Profitable markets for guayule resin and the successful development of hypoallergenic latex will assist in the development of guayule as a sustainable crop. The commercial cooperator expects to have 70,000 acres of guayule shrub available by 2005. This means that at the end of Phase II there will be… More

This proposal addresses the need for thin, strippable and fast drying coatings for decontaminating surfaces exposed to wide-area toxic industrial chemicals. The goal is to encapsulate and neutralize the hazardous agents by using a low cost film, which is peeled from the surface after drying. The… More