A5045101765- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Electrospun Nanofibers in Biomedical Applications
- Advanced Sensor and Energy Harvesting Materials
- Graphene and Nanomaterials Applications
- Natural Fiber Reinforced Composites
- Surface Modification and Superhydrophobicity
- Graphene research and applications
- Supercapacitor Materials and Fabrication
- Carbon and Quantum Dots Applications
- Advanced Photocatalysis Techniques
- Advanced Nanomaterials in Catalysis
- Conducting polymers and applications
- Bone Tissue Engineering Materials
- Advanced oxidation water treatment
- Nanocomposite Films for Food Packaging
- Microplastics and Plastic Pollution
- Dielectric materials and actuators
- Radioactive element chemistry and processing
- Perovskite Materials and Applications
- Electrochemical sensors and biosensors
- Polymer Nanocomposites and Properties
- Clay minerals and soil interactions
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Materials and Mechanics
Guizhou University
2016-2023
Sichuan University
2013-2023
National Engineering Research Center for Compounding and Modification of Polymer Materials
2019-2023
University of South China
2021-2022
Hebei Normal University
2021-2022
Xi'an University of Architecture and Technology
2022
North China Electric Power University
2022
Zhejiang University
2019-2020
Qinghai University
2020
Central South University
2019
Nanomaterials-based artificial enzymes (AEs) have flourished for more than a decade. However, it is still challenging to further enhance their biocatalytic performances due the limited strategies tune electronic structures of active centers. Here, new path reported de novo design d electrons centers by modulating electron transfer in vanadium-based AEs (VOx -AE) via unique Zn-O-V bridge efficient reactive oxygen species (ROS)-catalysis. Benefiting from Zn V, V site VOx -AE exhibits lower...
The notion of toughening poly(lactic acid) (PLA) by adding flexible biopolymers has generated enormous interest but yielded few desirable advances, mainly blocked the sacrifice strength and stiffness due to uncontrollable phase morphology poor interfacial interactions. Here control methodology, that is, intense extrusion compounding followed "slit die extrusion-hot stretching-quenching" technique, was proposed construct well-aligned, stiff poly(butylene succinate) (PBS) nanofibrils in PLA...
A strong continuous shear flow was imposed on the melt of ramie fiber reinforced poly(lactic acid) (PLA) biocomposites during practical processing. Classic shish-kebabs and typical transcrystallinity were simultaneously formed in sheared PLA/ramie samples, which closely related to formation row-nuclei induced by that further amplified incorporated natural fibers. Interestingly, some nano-sized ultrafine fibers tended absorb stabilize as-formed row-nuclei, subsequently grew into unexpected...
In contrast to the relatively clear understanding of epitaxial crystallization induced by one-dimensional nanofillers, underlying interfacial interactions between polymer crystals and two-dimensional graphene oxide (GO) nanosheets are something a mystery. Here, GO-assisted formation poly(lactic acid) (PLA) stereocomplex (SCs) is disclosed from quantitative structural analysis direct morphological observations at multiscale interaction mechanism molecular level. It unexpected observe that...
With the sharp rise of antibiotic-resistant pathogens worldwide, it is enormous importance to create new strategies for combating pathogenic bacteria. Here, we an iron oxide-based spiky artificial peroxidase (POD) with V-O-Fe pair sites (V-Fe
The traditional approach toward barrier property enhancement of poly(lactic acid) (PLA) is the incorporation sheet-like fillers such as nanoclay and graphene, unfortunately leading to sacrificed biocompatibility degradability. Here we unveil first application a confined flaking technique establish degradable nanolaminar poly(butylene succinate) (PBS) in PLA films based on PLA/PBS situ nanofibrillar composites. combination high pressure (10 MPa) appropriate temperature (160 °C) during process...
Carbon-based quantum dots (QDs) with ultralow dimensions and controllable surface chemistry have unique properties appealing to diverse applications. Here, we disclose a high-throughput transformation of spent coffee grounds into uniform QDs assembled by few-layer graphene oxide nanosheets, employing microwave-assisted strategy under aqueous reaction conditions. Given the low (30 nm) high structural integrity, highly oxygenated exhibited excellent dispersibility in water tunable...
A local shear flow field was feasibly generated by pulling the ramie fiber in single reinforced poly(lactic acid) (PLA) composites. This featured an ultrahigh gradient with a maximum rate up to 1500 s–1, level comparable that frequently occurring during practical polymer processing. To distinguish shear-induced self-nucleation and fiber-induced heterogeneous nucleation, history classified for 5 s (pulled sample) out 10 (pulled-out sample), while static crystallization carried as counterpart....
The present work discloses a bioinspired methodology for the unprecedented achievement of simultaneously strong, tough and stiff PLA.
The origin of hydrolysis-induced nanofibrillation and crystallization, at the molecular level, was revealed by mapping conformational ordering during long-term hydrolytic degradation initially amorphous poly(lactic acid) (PLA), a representative model for degradable aliphatic polyesters generally displaying strong interplay between crystallization erosion. regularization chain segments essentially main driving force morphological evolution PLA degradation. For hydrolysis 37 °C, no significant...
The unique strengths of 2D graphene oxide nanosheets (GONSs) in polymer composites are thwarted by nanosheet agglomeration due to strong intersheet attractions. Here, we reveal that shrinking the planar size 0D quantum dots (GOQDs), together with intercalation rich oxygen functional groups, reduces filler aggregation and enhances interfacial interactions host polymer. With poly(lactic acid) (PLA) as a model matrix, atomic force microscopy colloidal probe measurements illustrated triple...
Graphene oxide (GO) nanosheets featuring high surface activity and large planar dimension may function as robust nanointerfaces in biocomposites, contributing to simultaneous promotion of mechanical gas barrier properties. Here, a solution-processed, additive-free approach immobilize few-layer GO on starch granule surfaces (GO@starch) by hydrogen bonding is demonstrated. This enabled straightforward pathway remove the intersheet van der Waals forces (π–π stacking) that generally cause...
Central to the design and execution of nanocomposite strategies is invention polymer-affinitive multifunctional nanoreinforcements amenable economically viable processing. Here, a microwave-assisted approach enabled gram-scale fabrication luminescent quantum dots (QDs) from spent coffee grounds. The ultrasmall dimensions (approaching 20 nm), coupled with richness diverse oxygen functional groups, conferred zero-dimensional QDs proper exfoliation uniform dispersion in poly(l-lactic acid)...
Abstract The quinoid‐donor‐acceptor (Q‐D‐A) strategy has recently emerged as a promising approach for constructing high mobility semiconducting polymers. In order to fully explore the potential of this in improving charge transport and elucidating structure‐property‐performance relationships Q‐D‐A polymers, series new polymers with different electron acceptor units backbone coplanarity have been synthesized characterized. All resulting exhibit much more planar conformations comparison their...
Formation of transcrystalline layer probably enhances the interfacial adhesion poly(L-lactic acid) (PLLA)/natural fiber biocomposites as confirmed by this work. We found that a crystallization accelerator, poly(ethylene glycol) (PEG), improved chain mobility PLLA and thus enhanced growth kinetics ramie fiber-induced transcrystallinity (TC). The direct observation polarized optical microscopy during isothermal revealed large-sized TC with rapid was produced after adding PEG. It could be...
Development of multifunctional, versatile biobased polymers can greatly benefit from the discovery and application 2D sheet-like materials. For instance, hybrid system integrating graphene oxide (GO) nanosheets with enantiomeric poly(lactic acid) (PLA) showcases several key properties that address emerging multifunction needs such as good gas barrier high thermal resistance. Here we revealed large specific surface area homogeneous dispersion GO conferred construction interconnected networks...