A5017069431- Polymer crystallization and properties
- biodegradable polymer synthesis and properties
- Polymer Nanocomposites and Properties
- Polymer composites and self-healing
- Microplastics and Plastic Pollution
- Carbon dioxide utilization in catalysis
- Conducting polymers and applications
- Postharvest Quality and Shelf Life Management
- Advanced Polymer Synthesis and Characterization
- Phytochemicals and Antioxidant Activities
- Additive Manufacturing and 3D Printing Technologies
- Anodic Oxide Films and Nanostructures
- Material Dynamics and Properties
- Bone Tissue Engineering Materials
- Corrosion Behavior and Inhibition
- Nuclear Materials and Properties
- Organic Electronics and Photovoltaics
- Polysaccharides and Plant Cell Walls
- Advanced Sensor and Energy Harvesting Materials
- Block Copolymer Self-Assembly
- Shoulder Injury and Treatment
- Natural Fiber Reinforced Composites
- Electrospun Nanofibers in Biomedical Applications
- Polysaccharides Composition and Applications
- Optical Network Technologies
Beijing National Laboratory for Molecular Sciences
2016-2025
Chinese Academy of Sciences
2016-2025
Guangxi Academy of Agricultural Science
2014-2024
China General Nuclear Power Corporation (China)
2017-2024
Institute of Chemistry
2012-2024
Fujian Medical University
2023-2024
University of Chinese Academy of Sciences
2008-2024
Shandong Normal University
2022-2024
Beijing Aerospace Flight Control Center
2023-2024
Beijing Zhenxing Metrology & Measurement Institute
2024
Poly(lactic acid) (PLA) is one of the most promising alternatives for petrochemical‐based plastics. Crystallization mediation provides simplest and practical approach enhancing properties PLA. Here, recent advances in understanding relationship between crystalline structure PLA are summarized. Methods manipulating crystallization towards high‐performance materials introduced.
Molecular vibrations play a critical role in the charge transport properties of weakly van der Waals bonded organic semiconductors. To understand which specific phonon modes contribute most strongly to electron-phonon coupling and ensuing thermal energetic disorder some widely studied high-mobility molecular semiconductors, state-of-the-art quantum mechanical simulations vibrational constants are combined with experimental measurements low-frequency using inelastic neutron scattering...
The role of the molecular weight in crystallization and melt memory poly(ε-caprolactone) (PCL) was investigated. To this end, 10 PCL samples synthetic commercial origin different chain ends, covering a number-average (Mn) range between 0.48 70.5 kg/mol, were analyzed. Polarized light optical microscopy, differential scanning calorimetry, small-angle X-ray scattering (SAXS) employed for in-depth characterization. thermal transitions, morphology, kinetics, structural parameters, effects...
ABSTRACT A reversibly cross‐linked epoxy resin with efficient reprocessing and intrinsic self‐healing was prepared from a diamine Diels‐Alder (DA) adduct cross‐linker commercial oligomer. The newly synthesized cross‐linker, comprising DA of furan maleimide moieties, can cure monomer/oligomer thermal reversibility. reversible transition between state linear architecture endows the cured rapid recyclability repeated healability. fundamentally behaves as typical thermosets at ambient conditions...
Piranha solution is shown to be an effective agent in activating the surface of HNTs for silanization modification.
The structure, morphology, and thermal properties of biobased biodegradable poly(butylene succinate-ran-butylene azelate) random copolyesters with a wide composition range were studied. These PBS-ran-PBAz copolymers can crystallize in the entire despite being random, displaying eutectic point when their melting is plotted as function composition. Wide angle X-ray scattering (WAXS) studies confirmed isodimorphic behavior where PBS-rich PBS type unit cells some PBAz repeating inclusions vice...
Mechanically robust and self‐healing rubbers are highly desired to satisfy the increasing demand of high‐performance smart tires related materials. Herein, a rubber nanocomposite with enhanced mechanical performance based on Diels–Alder chemistry has been investigated. The furfuryl grafted styrene‐butadiene terminated MWCNT (MWCNT‐FA) reacted bifunctional maleimide form covalently bonded reversibly cross‐linked composite. Obvious reinforcing effect is obtained at high cross‐linking density....
A simple scaling relationship between normalized relaxation time and reaction kinetics is established for CANs polymers.
The longan industry produces a large amount of byproducts such as pericarp and seed, resulting in environmental pollution resource wastage. present study was performed to systematically evaluate functional components, i.e., polyphenols (phenolics flavonoids) alkaloids, their bioactivities, including antioxidant activities, nitrite scavenging activities simulated gastric fluid anti-hyperglycemic vitro. Total phenolic total flavonoid contents were slightly higher than those seeds, but seeds...
The crystallization of heterogeneously nucleated bulk polymers typically occurs in a single exothermic process, within narrow temperature range, i.e., peak is detected by differential scanning calorimetry when the material cooled from melt. However, semicrystalline polymer subdivided or dispersed into multitude totally (or partially) isolated microdomains (e.g., droplets cylinders), number comparable to that commonly available nucleating heterogeneities, several separated events are...
Abstract Two-dimensional metal-organic frameworks (MOFs) have a wide variety of applications in molecular separation and other emerging technologies, including atomically thin electronics. However, due to the inherent fragility strong interlayer interactions, high-quality MOF crystals atomic thickness, especially isolated crystal monolayers, not been easy prepare. Here, we report self-condensation-assisted chemical vapour deposition growth single-crystals, yielding monolayer single-crystals...
Among central nervous system-associated malignancies, glioblastoma (GBM) is the most common and has highest mortality rate. The high heterogeneity of GBM cell types complex tumor microenvironment frequently lead to recurrence sudden relapse in patients treated with temozolomide. In precision medicine, research on treatment increasingly focusing molecular subtyping precisely characterize cellular heterogeneity, as well refractory nature toward therapy. Deep understanding different expression...
The shear piezoelectricity of polylactide (PLA) depends on the chain orientation, crystallinity, and optical purity, but their combined influence piezoelectric properties has never been studied. This work examines effect purity morphology induced by cold-drawing heat treatment. Moreover, force frequency during dynamic mechanical activation response PLA was results this present for first time a coefficient purely amorphous as-drawn film (d14 = 2.3 ± 0.1 pC N–1), exhibiting high orientation...
The structural evolution of poly(butylene succinate) (PBS) during tensile deformation was investigated by in situ synchrotron X-ray scattering. Crystal transition stretching identified at 30–90 °C. An increase long period observed the α–β crystal transition, which attributed to both amorphous layer thickness and crystalline (lamellar thickness). reversibility correlation lamellar thickening with were confirmed a "step-cycle" measurement. variation partially recoverable, while nearly fully...
How polymers crystallize can greatly affect their thermal and mechanical properties, which influence the practical applications of these materials. Polymeric materials, such as block copolymers, graft polymers, polymer blends, have complex molecular structures. Due to multiple hierarchical structures different size domains in systems, confined hard environments for crystallization exist widely The geometry is closely related both phase metastability lifetime polymer. This affects...
A complete study of the effect different organocatalysts on step-growth polyaddition a five-membered dicyclic carbonate, namely diglycerol dicarbonate, with poly(ethylene glycol)-based diamine in bulk at 120 °C was first carried out. The reaction found to be dramatically catalyst-dependent, higher rates being observed presence strong bases, such as phosphazenes (t-Bu-P4 or P4) and 5,7-triazabicyclo[4.4.0]dec-5-ene (TBD). Unexpectedly, as-formed urethane linkages entirely vanished time,...