A5021089699- Polymer Nanocomposites and Properties
- Polymer crystallization and properties
- Epoxy Resin Curing Processes
- Tribology and Wear Analysis
- Mechanical Behavior of Composites
- Metal and Thin Film Mechanics
- Carbon Nanotubes in Composites
- Diamond and Carbon-based Materials Research
- Silicone and Siloxane Chemistry
- Chemical Synthesis and Characterization
- Synthesis and properties of polymers
- Fiber-reinforced polymer composites
- Advanced Sensor and Energy Harvesting Materials
- Injection Molding Process and Properties
- Graphene research and applications
- Conducting polymers and applications
- ZnO doping and properties
- biodegradable polymer synthesis and properties
- Quantum Dots Synthesis And Properties
- Polymer composites and self-healing
- Force Microscopy Techniques and Applications
- Corrosion Behavior and Inhibition
- Radioactive element chemistry and processing
- Nanomaterials and Printing Technologies
- Natural Fiber Reinforced Composites
Texas A&M University
2016-2025
Xiamen University
2023
Mitchell Institute
2009-2022
College Station Medical Center
2014-2021
Walker (United States)
2021
Texas College
2016
Kaneka (United States)
2008-2016
Kyushu University
2015
Sichuan University
2014
Dow Chemical (United States)
1991-2009
Zinc oxide quantum dots (ZnO QDs) are nanoparticles of purified powdered ZnO. These were evaluated for antimicrobial activity against Listeria monocytogenes, Salmonella Enteritidis, and Escherichia coli O157:H7. The ZnO QDs utilized as a powder, bound in polystyrene film (ZnO-PS), or suspended polyvinylprolidone gel (ZnO-PVP). Bacteria cultures inoculated into culture media liquid egg white (LEW) incubated at 22 degrees C. inhibitory efficacies 3 pathogens concentration dependent also...
Synthetic α-zirconium phosphate (α-ZrP) layer structures have been prepared via three different approaches. By controlling the concentration of reactants, temperature, pressure, and using a complexing agent, α-ZrP with wide variation in aspect ratios has prepared. can be easily intercalated by amines then exfoliated epoxy to prepare polymer nanocomposites. Nanocomposites that contain nanoplatelets variations utilized as model systems study structure–property relationship
An amphiphilic poly(ethylene-alt-propylene)-b-poly(ethylene oxide) (PEP-PEO) block copolymer (BCP) was blended with a bisphenol A-based epoxy resin formulation and self-assembled into wormlike micelle structure. With an incorporation of 5 wt % the BCP material, fracture toughness improved by >100% over neat epoxy. The morphology mechanical properties this BCP-modified were investigated using transmission electron microscopy, dynamic analysis, tensile tests, measurements. Toughening...
The morphology and mechanical properties of epoxy nanocomposites based on synthetic α-zirconium phosphate (α-ZrP) layer structure have been investigated. interlayer surfaces α-ZrP can be easily modified because its high surface ion exchange capacity characteristics. is layered claylike possesses aspect ratios at least 100. state exfoliation has confirmed using direct transmission electron microscopy observation various locations the sample. With an addition only 1.9 vol % α-ZrP, tensile...
The scratch behaviors of a broad range polymers are investigated to understand how the material characteristics polymer affect resistance. A constant load test and progressive chosen for present study. model proposed by Hamilton Goodman is applied correlate mechanics parameters during process. An attempt made behavior basic properties, such as Young's modulus, yield stress, tensile strength. correlation between surface characteristics, friction coefficient, hardness, elastic recovery, under...
An amphiphilic block copolymer toughener was incorporated into a liquid epoxy resin formulation and self-assembled well-dispersed nanometer scale spherical micelles with size of about 15 nm. The nanosized at 5 wt % loading can significantly improve the fracture toughness cured thermosets without reduction in modulus room temperature only slight drop glass transition temperature. toughening mechanisms were investigated, it found that nm could cavitate to induce matrix shear banding, which...
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication the EditorNEXTBlock Copolymer Toughened Epoxy: Role of Cross-Link DensityZachary J. Thompson†, Marc A. Hillmyer‡, Jia (Daniel) Liu§, Hung-Jue Sue§, Marv Dettloff∥, and Frank S. Bates*†View Author Information Department Chemical Engineering Materials Science Chemistry, University Minnesota, Minneapolis, Minnesota 55455; Polymer Technology Center, Mechanical Engineering, Texas A&M University, College Station, 77843; Epoxy...
High-crystallinity α-zirconium phosphate (α-ZrP) crystals which contain stacks of high aspect ratio nanoplatelets were synthesized and exfoliated with tetra-n-butylammonium hydroxide in aqueous dispersion. The α-ZrP then transferred into water-miscible organic solvents, such as acetone, by centrifugation re-dispersion. resulting solvents can be easily utilized to prepare polymer nanocomposites. Through an approach, epoxy/α-ZrP nanocomposites containing have been prepared. presence the...
Quality lignin-based carbon fiber with high mechanical performance has been made from enzyme–mediator and dialysis fractionated lignin. In particular, the elastic modulus of showed good correlations PDI.
Zeolitic imidazole framework-8 (ZIF-8) is utilized as a functional filler and curing agent in the preparation of epoxy nanocomposites. The group on surface ZIF-8 initiates curing, resulting covalent bonding between crystals matrix. A substantial reduction dielectric constant increase tensile modulus were observed. implication present study for utilization metal-organic framework to improve physical mechanical properties polymeric matrixes discussed.
Abstract Scratches that result in delamination are common multilayer polymeric laminates and coatings. In this study, the adhesive failure among a set of model double‐layer epoxy coatings was experimentally investigated numerically analyzed using finite element method modeling based on maximum principal stress criterion. The generated an ASTM‐standard linearly increasing normal load scratch test. parametric study reveals may initiate at locations underneath both shoulder behind tip during...
When the α-zirconium phosphate is of low crystallinity, guests are easy to intercalate into entire gallery space, even at intercalation ratio, and achieve a large interlayer distance. With increasing turns out be more difficult. A high degree can only achieved ratio.