A5049500714- Epoxy Resin Curing Processes
- Carbon Nanotubes in Composites
- Polymer Nanocomposites and Properties
- Fiber-reinforced polymer composites
- Synthesis and properties of polymers
- Graphene research and applications
- Mechanical Behavior of Composites
- Advanced Sensor and Energy Harvesting Materials
- Natural Fiber Reinforced Composites
- Nanotechnology research and applications
- Chemical Synthesis and Characterization
- Orthopaedic implants and arthroplasty
- Nanowire Synthesis and Applications
- Polymer composites and self-healing
- Silicone and Siloxane Chemistry
- Advanced Thermoelectric Materials and Devices
- Injection Molding Process and Properties
- Flame retardant materials and properties
- 3D Printing in Biomedical Research
- Chemical Safety and Risk Management
- Polymer crystallization and properties
- Advancements in Battery Materials
- Surface Modification and Superhydrophobicity
- Membrane Separation Technologies
- Innovative Energy Harvesting Technologies
Texas A&M University
2020-2024
University of Southern California
2020-2021
Mitchell Institute
2021
College Station Medical Center
2021
Thermoelectric generators (TEGs) provide a unique solution for energy harvesting from waste heat, presenting potential green energy. However, traditional rigid and flexible TEGs cannot work on complex dynamic surfaces. Here, we report stretchable TEG (S-TEG) (over 50% stretchability of the entire device) that is geometrically suitable various surfaces heat sources. The S-TEG consists hot-pressed nanolayered p-(Sb2Te3) n-(Bi2Te3)-type thermoelectric couple arrays exploits wavy serpentine...
Nature has developed a wide range of functional microstructures with optimized mechanical properties over millions years evolution. By learning from nature’s excellent models and principles, biomimicry provides practicable strategy for designing fabricating the next smart materials enhanced properties. Nevertheless, complicated micro-structural constructions in nature are beyond ability conventional processes, hindering developments biomimetic research its forthputting engineering systems....
A mechanically interlocked vitrimer (MIV) based on a benzoxazine monomer and polyrotaxane (PR) has been prepared through network (MIN) dynamic covalent bond chemistry. The transacetalation exchange the N,O-acetal-type polybenzoxazine (PBz) structure was catalyzed by tin compound. Compared to controlled PBz without MIN, designed MIV shows enhanced mechanical performance including ductility tensile strength while maintaining relatively high Young's modulus glass transition temperature (Tg)....
Demands for high-performance electrical power transmission cables continue to rise, especially offshore transmission, electric vehicles, portable electronics, and deployable military applications. Carbon nanotubes (CNTs)-Copper (Cu) core-shell wire is regarded as one of the best candidate material systems transmitting electricity thermal energy. In this study, a facile robust approach was developed enhance CNT-Cu interfacial interactions. This consists substrate-enhanced electroless...
Metal nanowire networks are promising materials to replace metal oxide films in transparent conductive electrodes (TCE), but they suffer from low stability actual working conditions. Here, carbon nanotube/copper (CNT/Cu) composite fibers were fabricated via electrospinning for the first time address this problem. For purpose, cysteine was grafted CNTs' surface improve CNT–Cu interactions. Randomly formed mats of CNT/Cu used as TCEs which exhibit excellent optoelectrical properties with...
Abstract Metal‐carbon nanotube (CNT) hybrid fibers are emerging materials for light‐weight conductors that can replace common metallic conductors. One of the main challenges to their development is poor affinity between CNT and metals. In this work, a new approach fabrication CNT/Cu core‐shell demonstrated outperforms commercial Cu wires in terms specific conductivity, ampacity, strength. By introducing thiol groups surface fibers, dense coating with enhanced adhesion obtained. Consequently,...
The dispersion of nanoparticles plays a key role in enhancing the mechanical performance polymer nanocomposites. In this work, one hybrid epoxy nanocomposite reinforced by well dispersed, zinc oxide functionalized, multi-wall carbon nanotube (ZnO-MWCNT) and core-shell rubber (CSR) was prepared, which possesses both high modulus fracture toughness while maintaining relatively glass transition temperature (Tg). improved from 0.82 MPa m1/2 for neat to 1.46 ternary nanocomposites is resulted...
The inherent brittleness of polybenzoxazines (PBas) makes them difficult for high-performance microelectronics and composite applications. Conventional toughening approaches are either ineffective or cause a reduction in the glass transition temperature (Tg) PBa. Polyrotaxane (PR), mechanically interlocked supramolecular polymer, is an effective agent to improve tensile strength fracture toughness various polymers due its unique topological structure. In this study, effect molecular weight...
Abstract Reinforcing poly(ether‐ether‐ketone) (PEEK) with multi‐walled carbon nanotubes (MWCNT) is of great interest for harsh environment applications, such as seals oil and gas recovery because its expected superior thermal mechanical properties environmental stability. In this research, a PEEK nanocomposite containing 10 wt% well‐dispersed MWCNT was successfully prepared using solution mixing approach. Compared to commercial PEEK/PBI (polybenzimidazole) blend benchmark, PEEK/MWCNT...
Abstract Carbon fiber‐reinforced epoxy composites (CFECs) continue to grow in demand for aerospace, mass transportation, electric vehicle, and energy efficient architecture due their lightweight, high strength, modulus. However, CFECs are susceptible delamination upon impact which can lead premature structural failure. This paper investigates the interlaminar fracture toughness of unidirectional based on reactive polyetherimide (rPEI) modified multifunctional matrix system. The matrices were...
Demands for high performance electrical power transmission cables continues to rise, especially offshore transmission, electric vehicles, portable electronics, and deployable military applications. Carbon nanotube (CNT)-Copper (Cu) core-shell wire is regarded as one of the best candidate material systems transmitting electricity thermal energy. In this study, a robust facile approach was developed enhance CNT-Cu interfacial interactions using substrate-enhanced electroless deposition step Cu...
The growing research interests with engineered nanomaterials in academic laboratories and manufacturing facilities pose potential safety risks to students workers. New nanoparticle substances, compositions, processing approaches are developed regularly, creating new health which may not have been addressed previously. Accordingly, the Institute of Occupational Medicine conducted field studies at Texas A&M University (TAMU) characterize possible particle emissions during fabrication carbon...
It is a daunting task to prepare polyolefin nanocomposites that contain well-exfoliated nanoplatelets due the nonpolar and high crystallinity nature of polyolefins. In this research, robust approach was developed polyethylene (PE) by grafting maleated (MPE) onto pre-exfoliated α-zirconium phosphate (ZrP) via simple amine-anhydride reaction form ZrP-g-MPE. Several variables, including maleic anhydride (MA) content, MPE graft density, molecular weight, PE matrix crystallinity, were...