A5057255120- Polymer Foaming and Composites
- Polymer Nanocomposites and Properties
- biodegradable polymer synthesis and properties
- Polymer composites and self-healing
- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Polymer crystallization and properties
- High voltage insulation and dielectric phenomena
- Extracellular vesicles in disease
- 3D Printing in Biomedical Research
- Cellular and Composite Structures
- Advanced battery technologies research
- Carbon dioxide utilization in catalysis
- Carbon Nanotubes in Composites
- Supercapacitor Materials and Fabrication
- Pluripotent Stem Cells Research
- MicroRNA in disease regulation
- Tissue Engineering and Regenerative Medicine
- Electrocatalysts for Energy Conversion
- Traditional Chinese Medicine Studies
- Rheology and Fluid Dynamics Studies
- Photoacoustic and Ultrasonic Imaging
- Phase Equilibria and Thermodynamics
- RNA Interference and Gene Delivery
- Fiber-reinforced polymer composites
Florida A&M University - Florida State University College of Engineering
2016-2025
Florida State University
2016-2025
Florida Agricultural and Mechanical University
2024
Guangxi Medical University
2013
South China Normal University
2004-2012
Zhejiang University
2011
Hubei University of Science and Technology
2010
The Ohio State University
2001-2005
Poly(methyl methacrylate) (PMMA) and polystyrene (PS)/clay nanocomposites were prepared via in-situ bulk polymerization. The compatibility of the initiator monomer with clay surface was found to profoundly affect dispersion. By using a surfactant containing polymerizable group modify surface, exfoliated PMMA PS/clay synthesized. dispersion quantified by both X-ray diffraction (XRD) transmission electron microscopy (TEM). dimension stability studied related nanoscale (layer separation)...
Abstract Polypropylene (PP) nanocomposites were prepared by melt intercalation in an intermeshing corotating twin‐screw extruder. The effect of molecular weight PP‐MA (maleic anhydride‐ modified polypropylene) on clay dispersion and mechanical properties was investigated. After injection molding, the tensile impact strength measured. best overall found for composites containing having highest weight. basal spacing measured X‐ray diffraction (XRD). Nanoscale morphology samples observed...
Poly(methylmethacrylate) and polystyrene–clay nanocomposites have been synthesized exfoliated clay dispersion has achieved (see Figure). Nanocomposite foams prepared using CO 2 as the foaming agent. Orders of magnitude increase in nucleation efficiency was accomplished by manipulation polymer–clay–CO interaction.
Abstract Intercalated and exfoliated polystyrene/nano‐clay composites were prepared by mechanical blending in situ polymerization respectively. The then foamed using CO 2 as the foaming agent an extrusion process. resulting foam structure is compared with that of pure polystyrene polystyrene/talc composite. At a screw rotation speed 10 rpm die temperature 200°C, addition small amount (i.e., 5 wt%) intercalated nano‐clay greatly reduces cell size from 25.3 to 11.1 μm increases density 2.7 × 7...
The performance of flexible and stretchable sensors relies on the optimization both substrate sensing element, their synergistic interactions. Herein, a novel strategy is reported for cost‐effective scalable manufacturing new class porous materials as 3D piezoresistive sensors, by assembling carbon nanotubes onto substrates tunable Poisson ratios. It shown that sensitivity increases substrate's Poisson's ratio decreases. Substrates with negative ratios (auxetic foams) exhibit significantly...
Extracellular vesicles (EVs) are membrane-bound nanovesicles that show significance in intercellular communications and high therapeutic potential. In this study, a novel type of EV subpopulation, matrix-bound (MBVs), was identified from decellularized extracellular matrix brain organoids were derived human pluripotent stem cells to compare with supernatant EVs (SuEVs) isolated spent media. The generated 10-fold more MBVs than did SuEVs. SuEVs contained enriched microRNA cargo MBVs, the...
Extracellular vesicles (EVs) derived from human organoids are phospholipid bilayer-bound nanoparticles that carry therapeutic cargo. However, the low yield of EVs remains a critical bottleneck for clinical translation. Vertical-Wheel bioreactors (VWBRs), with unique design features, facilitate scalable production secreted by blood vessel (BVOs) under controlled shear stress, using aggregate- and microcarrier-based culture systems. Human induced pluripotent stem cell-derived BVOs cultured as...
Abstract Polymeric nano‐composites are prepared by melt intercalation in this study. Nano‐clay is mixed with either a polymer or blend twin‐screw extrusion. The clay‐spacing the composites measured X‐ray diffraction (XRD). morphology of and its development during extrusion process observed scanning electron microscopy (SEM). Melt viscosity mechanical properties blends also measured. It found that clay spacing influenced greatly type used. addition nano‐clay can increase when there strong...
A novel compressed carbon dioxide assisted fabrication method is demonstrated to produce auxetic PU foam. Auxetic foams can be fabricated at room temperature (25 °C) in several seconds with CO2. This technology overcomes some key challenging issues the large-scale production of foams. As a service our authors and readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may re-organized for online delivery, but not copy-edited or typeset....
ABSTRACT A series of thermoplastic polyurethane (TPU)/poly(lactic acid) (PLA) blends are studied in terms morphological, thermal, and rheological properties by scanning electron microscopy, differential calorimetry, rheometry. Using supercritical CO 2 batch foaming, the foamability is systematically investigated. It found that 80/20 (wt %/wt %) TPU/PLA blend (TPU80%) shows vastly enhanced over a wide range foaming conditions to produce foams with myriad cellular morphology. The enhancement...
Over the past few years, there has been great deal of interest in recycling carbon-fibre-reinforced polymer composites. One method that shown promising results involves use supercritical fluids to achieve separation between matrix and fibres by effectively degrading resin into lower molecular weight compounds. In addition, solvents used are environmentally benign can also be recovered reused. this study, water with 0.05 M KOH as catalyst was for an aerospace-grade high-performance epoxy...
In this work, an effective and low-cost method to fabricate hybrid piezoelectrets is based on cyclic olefin copolymer (COC) polypropylene (PP).The electromechanical properties of the were characterized.In piezoelectrets, PP constituted overall structure while COC was used as surface layers for charge storage.The exhibited good piezoelectric properties, flexibility, significantly improved environmental stability.The had a coefficient d 33 up 1200 pC/N.The lost all activity after annealing 16...
Composite electrodes were fabricated for supercapacitor applications by depositing vanadium oxide onto multi-walled carbon nanotube (MWCNT) buckypaper using supercritical fluid deposition (SFD). The deposited thin layer showed amorphous structure with excellent uniformity. In aqueous KCl electrolyte, the exhibited a constant pseudo-capacitance of ∼ 1024 F g − 1, which was independent material loading (up to 6.92 wt%) and voltage scan rate 100 mV s 1). highest specific electrode capacitance...