A5085799157- Polymer composites and self-healing
- Polymer crystallization and properties
- Carbon Nanotubes in Composites
- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Polymer Synthesis and Characterization
- Neuroscience and Neural Engineering
- Material Properties and Applications
- Nanotechnology research and applications
- Polymer Nanocomposites and Properties
- Synthesis and properties of polymers
- EEG and Brain-Computer Interfaces
- Clay minerals and soil interactions
- Petroleum Processing and Analysis
- Surfactants and Colloidal Systems
- Epoxy Resin Curing Processes
- Nanomaterials and Printing Technologies
- Enhanced Oil Recovery Techniques
- Lignin and Wood Chemistry
- Synthetic Organic Chemistry Methods
- Rheology and Fluid Dynamics Studies
- Silicone and Siloxane Chemistry
- Environmental Impact and Sustainability
- Muscle activation and electromyography studies
- Polymer Foaming and Composites
Battelle
2011-2024
Seton Hall University
2004
University of Massachusetts Amherst
2002-2004
Stony Brook University
2004
State University of New York
2004
Carbon nanotubes (CNTs) were deposited from a chlorosulfonic superacid solution onto PET substrates by filtration/transfer method. The sheet resistance and transmission (at 550 nm) of the films 60 Ω/sq 90.9% respectively, which corresponds to DC conductivity 12,825 S cm(-1) DC/optical ratio 64.1. This is highest reported for CNT thin date, attributed both high quality material exfoliation/doping superacid. work demonstrates that transparent have not reached limit; continued improvements will...
For the first time, molecular weight distribution and extent of side reactions have been quantified in polyurethane prepolymers. A combination NMR, size exclusion chromatography, mass spectrometry has used to measure distribution. The values obtained are consistent with Flory's step polymerization theory. type amount as a function reaction temperature also investigated. At low reaction, branches arising from allophanate linkages is negligible. With only relatively modest change temperature,...
Thermal transitions and morphological changes in Cloisite organoclays were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, situ simultaneous small-angle X-ray scattering (SAXS) wide-angle diffraction (WAXD) over the temperature range of 30-260 degrees C. On basis DSC FTIR results, surfactant component was found to undergo a melting-like order-disorder transition between 35 50 The temperatures peaks...
A series of linear, aliphatic m,n-polyurethanes [O−(CH2)m−O−C(O)−NH−(CH2)n−NH−C(O)]x derived from long-chain diols HO−(CH2)m−OH, where m = 12, 22, or 32, and much shorter diisocyanates OCN−(CH2)n−NCO, n 4, 6, 8, were previously characterized shown to have physical thermal properties similar polyethylene. The current study shows, however, that hydrogen bonding still exercises a controlling influence on the crystallization process these long-chain, polyurethanes. X-ray diffraction, electron...
Infrared spectroscopy has been used to study the evolution of polyurethane foam structure, providing measures relative reaction kinetics, hard segment growth, onset phase separation, formation order, and development final morphology. Changes in free, monodentate, bidentate hydrogen-bonded urea groups dominate organization entire ensemble. Hard segments formed by 2,6-toluene diisocyanate (2,6-TDI) a mixture 80% 2,4-TDI 20% 2,6-TDI displayed very different local segmental alignment, factor...
The crystallization behavior of functionalized polymethylene chains with carbamate esters placed periodically between alternating docosyl and octyl segments has been examined infrared spectroscopy. Specific features both the interactions chain conformation have found. kinetics, including induction period, can be followed time-resolved spectroscopy (5 s time resolution) occurs in three stages. kinetics local hydrogen-bonding rearrangement is quite different from methylene stem ordering....
Background: Traditional gel-based (wet) electrodes for biopotential recordings have several shortcomings that limit their practicality real-world measurements. Dry may improve usability, but they often suffer from reduced signal quality. We sought to evaluate the recording properties of a novel mixed ionic–electronic conductive (MIEC) material improved performance. Methods: fabricated four MIEC electrode form factors and compared two control electrodes, which are commonly used (Ag-AgCl...
The miscibility behavior of reactive ternary blends, a model for hot melt polyurethane adhesives, has been characterized. system is composed polyether and polyester prepolymer blended with high T g polyacrylate. During synthesis, the molecular weight chemical composition chains were altered. Phase diagrams found to differ significantly from those associated starting materials. Consistent our earlier findings, or without modification plays crucial role in expanding region miscibility....
ABSTRACT A new material, classified as a soft mixed ionic–electronic conductor (MIEC), was fabricated through casting and curing of different ratios single walled carbon nanotube (SWNTs), hyaluronic acid (HA), acrylonitrile butadiene copolymer latex (NBR) developed for noninvasive stimulation electrotherapeutics. The morphology the composite yielded high electrical conductivity retention elasticity. interfacial charge transfer material showed that by increasing HA loading capacitive...
Electrotherapeutic devices require an electrode for coupling with the body. The most common electrodes are made of conducting corrosion resistance materials (e.g., TiN, Ir-IrO2, Pt) plus a layer electrolyte). is location where redox reaction take place between device and tissue. As such, it must conduct both electrons ions. reactions can be capacitive, involving charging discharging electrode-electrolyte double layer, or faradaic. Capacitive charge-injection more desirable than faradic...
Abstract Embedded sensors in footwear are of interest for providing feedback on mobility and gait. The most sensitive location is within the sole, requiring development new materials that have required functional mechanical properties. We developing capacitive strain sensors. performance such sensorsis dictated by two fundamental properties: dielectric constant (ε) hardness. sensitivity improved a high low This paper describes novel material combines composite elastomeric polymer single wall...