A5000352902- Polymer Nanocomposites and Properties
- Polymer crystallization and properties
- biodegradable polymer synthesis and properties
- Polymer Nanocomposite Synthesis and Irradiation
- Thermal properties of materials
- Electrospun Nanofibers in Biomedical Applications
- Graphene research and applications
- Conducting polymers and applications
- Flame retardant materials and properties
- Carbon Nanotubes in Composites
- Fire dynamics and safety research
- Dielectric materials and actuators
- Chalcogenide Semiconductor Thin Films
- Periodontal Regeneration and Treatments
- Advanced Sensor and Energy Harvesting Materials
- Rheology and Fluid Dynamics Studies
- Additive Manufacturing and 3D Printing Technologies
- Quantum Dots Synthesis And Properties
- Laser-Ablation Synthesis of Nanoparticles
- Diamond and Carbon-based Materials Research
- Oral microbiology and periodontitis research
- Boron and Carbon Nanomaterials Research
- Aerogels and thermal insulation
- Surface Modification and Superhydrophobicity
- Energetic Materials and Combustion
East China Jiaotong University
2017-2024
Queen's University Belfast
2016-2020
Zhejiang University
2011-2016
University of Ulster
2016
Korea Institute of Science and Technology
2014
Sichuan University
2008-2009
China Academy of Engineering Physics
2009
Southwest University of Science and Technology
2007-2009
Abstract Conductive polymers have been increasingly used as fuel cell catalyst support due to their electrical conductivity, large surface areas and stability. The incorporation of metal nanoparticles into a polymer matrix can effectively increase the specific area these materials hence improve catalytic efficiency. In this work, nanoparticle loaded conductive nanocomposite was obtained by one-step synthesis approach based on room temperature direct current plasma-liquid interaction. Gold...
This Research Article reports on the enhancement of thermal transport properties nanocomposite materials containing hexagonal boron nitride in poly(vinyl alcohol) through room-temperature atmospheric pressure direct-current microplasma processing. Results show that treatment leads to exfoliation isopropyl alcohol, reducing number stacks from >30 a few or single layers. The diffusivity resulting nanocomposites reaches 8.5 mm2 s–1, 50 times greater than blank and twice nonplasma treated...
A facile method to synthesize a TiO2/PEDOT:PSS hybrid nanocomposite material in aqueous solution through direct current (DC) plasma processing at atmospheric pressure and room temperature has been demonstrated. The dispersion of the TiO2 nanoparticles is enhanced TiO2/polymer with distinct core shell structure have obtained. Increased electrical conductivity was observed for treated nanocomposite. improvement properties due stability liquid polymer microplasma nanoparticles. Both induced...
Abstract The glass transition temperature ( T g ) of poly(phenylene sulfide) (PPS) with various crystalline fractions has been studied using dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC). DSC measurements show that can be observed from the heating curves for PPS sample very low crystallinity, no is when crystallinity over 8%. DMA indicates an important effect on molecular chain segment motion PPS. When X c , 38%, there only one motion, which mainly results...
Abstract The crystalline morphologies of isothermally and nonisothermally crystallized poly(phenylene sulfide) (PPS) its blend with polyamide 66 (PA66) were investigated by polarized optical microscopy a hot stage. spherulite superstructure PPS was greatly affected crystallizable PA66; Maltese cross not clear, the impingement between spherulites disappeared. This could be ascribed to formation small crystals PA66, which filled in lamellae. nonisothermal crystallization behavior also measured...
Abstract The isothermal crystallization of poly(phenylene sulfide) (PPS) and its glass fiber (GF) reinforced composite has been investigated by differential scanning calorimetry (DSC) polarized optical microscope (POM) equipped with a hot stage. During the process PPS Avrami exponent value decreases time, indicating change mechanism presence mixed growth (bidimensional three‐dimensional crystals). GF greatly accelerates bulk rate changes crystalline morphology from spherulites to...
Abstract The morphology of nonisothermally crystallized poly(phenylene sulfide) (PPS) and its blend with poly (ether ether ketone) (PEEK) have been observed by polarized optical microscope (POM) equipped a hot stage. nonisothermal crystallization behavior PPS PEEK/PPS has also investigated differential scanning calorimetry (DSC). maximum temperature for is about 15°C higher than that neat PPS, the rate, characterized half time, PPS. These results indicate PEEK acts as an effective nucleation...
ABSTRACT The mechanical properties and inflammability of polyamide 6 (PA6) nanocomposites incorporated with Montmorillonite organoclay (MMT) modified thermal stable ionic liquid surfactants were investigated. compatibility between liquid‐treated MMT PA6 matrix was improved the intercalation morphology achieved, which resulted in increaseof tensile modulus. However, addition organo‐MMTs alone did not improve nanocomposite, because strong melt‐dripping behavior matrix. Addition auxiliary...
In this study, the isothermal crystallization process of poly(l-lactide) (PLLA) has been investigated using in situ XRD, differential scanning calorimetry (DSC), and polarized optical microscopy (POM). Linear nonlinear extrapolation methods have deployed to estimate equilibrium melting temperature ( T m 0 ), which is used for analyzing supercooling dependence PLLA spherulitic growth rate (G). A double-melting behavior observed under Tc < 120 °C attributed formation both α′ α crystals. The...
Summary Polymers are increasingly being used in domestic, commercial and public environments as components of fabrics, surface coatings moulded articles. Most these polymeric synthetic, based on hydrocarbon intermediates, highly flammable, thus resulting unwanted fires. Combustion materials is a complex phenomenon that involves the solid phase, gaseous phase interphase. To fully characterize flammability attributes material not straightforward task, therefore several analytical techniques...
Bacterial cellulose holds great promise for tissue engineering, but its application is greatly limited due to the lack of large pores and poor cell affinity. In this study, macroporous bacterial was fabricated through dissolution gelatin microspheres, which were incorporated with during fabrication. Then, immobilized onto surface via procyanidins crosslinking. The results confirmed that scaffolds possessed interconnected structure, high porosity, good water uptake ability, mechanical...
Guided tissue regeneration (GTR) membranes have great potential to promote periodontal and reestablishment. However, the microbial infection resistance of current GTR still need be improved. Here, a bi-layered nanofibrous membrane on basis poly (lactic-co-glycolic acid) (PLGA)/gelatin with osteogenic antibacterial functions was fabricated for regeneration. The antimicrobial layer (AL) composed PLGA/gelatin nanofibers loaded nano-silver (nAg), while osteoconductive (OL) consisted...
Abstract Boron nitride nanoplatelets (BNNPs) are emerging as a potential candidate for developing polymer‐based thermally conducting nanocomposites that have electrically insulating properties. Generally, the mechanical performance of such nanocomposites, example, toughness, is often found to be inferior, primarily, owing poor dispersion BNNP, resulting from weaker interfacial interactions between BNNPs and polymer matrices. Here, we report on successful method fabricate high density...
The isothermal crystallization of poly(l-lactide) (PLLA) has been investigated by in-situ wide angle X-ray diffraction (WAXD) and polarized optical microscopes (POM) equipped with a hot-stage accessory. Results showed that the spherulites PLLA were formed at high temperature, whereas irregular morphology was observed under low temperature. This can be attributed to varying rates different temperatures. At temperatures, nucleation rate is fast hence chains diffuse very slow, resulting in...
Multiwave frequency experiments were used to determine the critical gel behavior of crystallizing melt poly(phenylene sulfide) (PPS), which allowed for simultaneous measurement viscoelastic properties at different oscillation frequencies. Therefore it was possible apparent point because shorter measuring time. The resulting time related crystallization kinetics during early stages. isothermal kinetic PPS calculated by rheometer and hot stage-polarized light microscopy (PLM) experiments....
The morphology of isothermally crystallized poly(phenylene sulfide) (PPS) and a blend combining it with high-impact polystyrene (HIPS) were observed through polarized optical microscope equipped CSS450 hot-stage. crystalline superstructure PPS is mainly spherulite, was found that the presence HIPS has little influence on PPS, but decreases nucleation rate PPS. effect non-isothermal crystallization investigated by differential scanning calorimetry (DSC). maximum onset temperatures for...
Abstract Isothermal crystallization of poly(phenylene sulfide) with three molecular weights ( M w = 22k, 48k, and 52k, respectively) under shear condition has been investigated. It appears that can induce all these PPS samples to form a thread‐like crystal structure which consists the numerous stable nuclei align tightly in direction shear. Crystallization kinetics greatly influenced by flow. Higher rate long time lead decrease spherulite growth PPS. Also, is affected supercoolings weight....
Metals and their alloys are irreplaceable engineered materials showing great importance in our society. Light alloy (i.e., Mg, Al, Ti, alloys) have tremendous application potential the aerospace, automotive industries, biomedical fields for they lighter excellent mechanical properties. The corrosion of light is ubiquitous greatly restricts utilization. Inspired by natural anti-water systems, many new designs conceptions recently emerged to create artificial superhydrophobic surfaces with...
Abstract In the paper, we report that CdSNPs@NPAN‐PAN and CdSNPs@NPAN‐rGO‐PAN composite photocatalysts were prepared by in situ growing CdS nanoparticles (CdSNPs) N‐polyaniline (NPAN) on electrospinning films. The largest specific surface area of a fiber was made adjusting diameter, photocurrent response photodegradation rhodamine B (RhB) experiments showed more prominent current photocatalytic capacity for contrast to pure CdSNPs photocatalysts. nitrogen atoms NPAN have hydrophilicity,...
Abstract Polymers with relatively higher thermal conductivity are in great demand for many advanced functional applications that often require thermally conductive as well flexible materials. However, enhancing the of polymers, while maintaining their mechanical properties, is still a formidable challenge. Here it reported on successful fabrication polyethylene (PE)/boron nitride nanoplate (BNNP) nanocomposite films, excellent flexibility and ultrahigh through‐plane conductivity, by...