Ganji Zhong

Sichuan University | SCU · College of Polymer Science and Engineering

Predicting stress–strain curves is key to facilitate the design of polymer materials and their products with tailored mechanical response. However, due to their structural complexity, polymeric solids generally feature complex stress–strain curves, which renders it challenging to model their stress–strain behaviors. Here, using the categorized know...

Highlights: A multi-scale conductive network was constructed in flexible PDMS/Ag@PLASF/CNT composite with micro-size Ag@PLASF and nano-size CNT. The PDMS/Ag@PLASF/CNT composite showed outstanding electrical conductivity of 440 S m-1 and superior electromagnetic interference shielding effectiveness of up to 113 dB. The PDMS/Ag@PLASF/CNT composites...

Two-dimensional (2D) nanomaterials have aroused immense attention in extensive applications due to their intriguing physical and chemical properties. However, there is a formidable challenge to prepare few-layered and functionalized 2D nanomaterials in an effective and universal way. Herein, we developed an integrated strategy of glucose-assisted m...

This paper aims to investigate the crystallization and barrier properties of oxygen-scavenging polyethylene terephthalate films (OSP) at different stretching ratios and stretching rates. The results show that with the increase of the stretching ratio, more regular lamellar crystal was formed in the biaxially stretched OSP films, and the amorphous p...

The development of structure-function integrated materials is an important trend in military field. How to achieve the enhanced interfacial property and electromagnetic interference (EMI) shielding property of carbon fiber (CF) reinforced polymer (CFRP) simultaneously is the main challenge at present. Herein, the mechanically strengthened CFRP with...

A series of polyethylene terephthalate‐polyethylene naphthalate (PETN) copolymer films with excellent oxygen barrier properties were prepared by introducing trace amounts of hydroxy‐terminated polybutadiene (HTPB) into PETN via in‐situ polymerization. The PETN‐HTPB copolymer films had strong oxygen scavengering capability. Due to the reaction of HT...

The hierarchical microstructure evolution of an emerging biobased odd-odd polyamide 5,13 (PA5,13) films under the thermo-mechanical field, stepping from hydrogen bond (H-bond) arrangement to the crystalline morphology, has been investigated systematically. It is found that the reorganization of H-bonds under the thermo-mechanical field plays a cruc...

It is a long-term bottleneck to reasonably balance heat conduction and heat absorption for cost-effective thermal management applications. In the current study, a dual cooling polylactic acid (PLA) composite film was fabricated by subtly coating phase change materials of polyethylene glycol (PEG) onto the surface of thermally conductive fillers of...

Hydrogel supported photocatalyst, an efficient strategy for water remediation suffers from compromised catalytic activity and insufficient stability. Herein, a robust cellulose-based composite hydrogel with zinc oxide (ZnO)/silica (SiO2) heterojunctions were fabricated by in-situ synthesis, where SiO2 not only acted as a cross-linking agent to enha...

Exploiting pollution-free and highly efficient pore-forming method for low dielectric constant biodegradable materials remains a challenge in green electronics field. As biodegradable polylactide (PLA) exhibits good electric insulation, herein a facile “casting-thermal stretching” approach via stress-induced cavitation aided by crystallization is r...

Thermal interface material (TIM) is crucial for electronic devices to dissipate heat, but the high interface thermal resistance between polymer matrix and filler is a major problem affecting its thermal conductivity (TC). In this study, we prebuilt excellent thermally conductive pathway of isotropic spherical boron nitride (sBN) using a facile meth...

Vitamin E (VE) is currently an approved antioxidant to improve the oxidation stability of highly crosslinked ultrahigh molecular weight polyethylene (UHMWPE) insert used commercially in total joint arthroplasty. However, the decrease in crosslink density caused by VE reduces wear resistance of UHMWPE, showing an uncoordinated challenge. In this wor...

3D-printing technology can be used to construct personalized bone substitutes with customized shapes, but it cannot regulate the topological morphology of the scaffold surface, which plays a vital role in regulating the biological behaviors of stem cells. In addition, stem cells are able to sense the topographical and mechanical cues of surface of...

The effect of cyclic straining on stress softening/hysteresis and structural evolution silica filled deuterated silicone rubber (SFdSR) during cyclic deformation has been investigated. In situ rheo-small-angle neutron scattering (Rheo-SANS) measurements were conducted with engineering strain rates (έ) spanning from 0.001 to 0.1 s⁻¹. Moreover, super...

Heteroatom doping of carbon aerogels is a promising strategy to dissipate electromagnetic waves (EMWs) and it is still a daunting challenge to establish the relationship between heteroatomic structure and EMI shielding performance. In our work, intrinsic N-doped biomass-based carbon aerogel was successfully prepared by freeze-drying and a specific...

In this paper, a series of polyethylene terephthalate‐polyethylene naphthalate copolymer (PETN) composites with high oxygen barrier property were prepared by introducing trace of graphene oxide (GO) during the in‐situ polymerization. The single‐layer GO nanosheets with large lateral size (about 1.8 μm) and abundant functional groups were prepared b...

It is a daunting task to develop a promising strategy at an industrial scale for simultaneously ameliorating ductility and gas barrier performance of poly(lactic acid) (PLA) films in the application of green packaging. In this work, biaxial stretching and constrained annealing were employed to prepare transparent PLA films with superior ductility a...

Carbon aerogels (CAs) have been considered potential microwave absorption (MA) materials because of intrinsic hierarchical porous structure, low density, and excellent heat resistance. However, CAs always required to be ground into micron-scale powder before being used as microwave absorbers, which will inevitably destroy the hierarchical porous st...

Gallium-based liquid metals (LMs) hold great promise as potential star materials for wearable and flexible electronics due to their superior electrical conductivity, high thermal conductivity, and good deformability. However, it remains still a huge challenge to realize the good dispersion of LM droplets. Herein, we demonstrated the design of highl...

The explosive development of flexible precision electronic devices necessitates materials with ultrahigh electromagnetic interference shielding effectiveness (EMI SE) and excellent mechanical flexibility to suppress unnecessary electromagnetic radiation. Herein, we report a feasible strategy to fabricate a flexible and water-proof porous film for h...

Multiple-Shape memory polymers containing conductive particles are seen as potential soft actuators due to their superiority in remote operation and simple equipment. Though abundant conductive particles can reduce the actuating voltage, it has a risk of reducing the shape-memory effect. Bilayer structure is a good strategy to solve the above contr...

Components of co-continuous phase can form an interpenetrating network structure, which has great potential to synergistically improve the mechanical properties of the blends, and to impart the functional blends superior electrical conductivity and permeability. In this work, the effects of shear rates (50–5000 s−1) at different temperatures on the...

Up to now, unbalanced mechanical properties and poor heat resistance have become two major problems of polylactic acid (PLA). In this study, the coupling between Cellulose nanocrystal (CNC) and strong shearing field formed a unique hierarchical structure. Compared with pure PLA, the tensile strength of DPIM PLA/CNC increased from 57.9 MPa to 79.6 M...

Mucosa is a protective and lubricating barrier in biological tissue, which has a great clinical inspiration because of its slippery, soft, and hydrophilic surface. However, mimicking mucosal traits on complex surface remains an enormous challenge. Herein, a novel approach to create mucosa‐like conformal hydrogel coating is developed. A thin conform...

The hydrogel supported catalyst is explored as an efficient strategy for water remediation due to its combination of absorption and degradation, while it remains great challenge to prepare highly dispersed multi-component catalyst. Herein, cellulose-based hydrogel containing dual-component catalysts was fabricated via in-situ synthesis and minerali...

Interfacial crystallization of polyoxymethylene/poly(butylene succinate) blends induced by the polyamide 6 (PA6) fiber was investigated. Due to strong heterogeneous nucleating ability, dense nuclei were generated on the surface of the PA6 fiber, which compelled the growth of twisted lamellae perpendicular to the PA6 fiber. As a result, unique inter...

In this work, a novel self-writing visible light processing method is employed to fabricate self-propagating polymer waveguide based porous epoxy matrix, which subsequently turns into micro-truss structured carbon nanotube (CNT)/epoxy conductive composites through CNT dip-coating. It is discovered that, by illuminating a photosensitive epoxy pre-po...

Dielectric elastomers are widely used for actuation applications in emerging domains such as tunable optics, tactile displays and soft robotics. However, dielectric elastomer actuators (DEAs) are prone to suffering from electrical or mechanical damage under the conditions of high operating voltage and mechanical stress, leading to a short service t...

Achieving low friction and wear of poly(phenylene sulfide) (PPS) without using fillers or blending is a challenging task, but one of considerable practical importance. Here we describe how neat PPS with high tribological performance is achieved by manipulating processing parameters (pressure, flow and temperature). The key to achieving high tribolo...

Highlights The cationic waterborne polyurethanes microspheres with Diels-Alder bonds were synthesized for the first time. The electrostatic attraction not only endows the composite with segregated structure to gain high electromagnetic-interference shielding effectiveness, but also greatly enhances mechanical properties. Efficient healing property...

Window is the least energy-efficient part of buildings or cars; however radiative cooling, as an efficient energy-zero technology, is rarely used in window films of buildings or cars. Therefore, we in this work fabricated a transparent dual-layer film for daytime radiative cooling, which contained a layer of polymethyl methacrylate (PMMA) uniformly...

The structural evolution of propylene-ethylene copolymer (coPP) and propylene-ethylene copolymer/polypropylene (coPP/iPP) films has been studied by in-situ WAXD/SAXS in a tensile process. Both coPP and coPP/iPP films show obvious melt-recrystallization during the deformation process. In the initial stage of stretching, the crystallinities of films...

Astrocyte activation is an important cause of neuropathic pain. Inhibiting the hyperactivation of astrocytes is beneficial to control over neuropathic pain. However, there is a lack of non-pharmaceutical ways to inhibit the hyperactivation of astrocytes. This study aimed at regulating the activity of glial cells via the architecture of 3D porous sc...

Cell polarization exists in a variety of tissues to regulate cell behaviors and functions. Space constraint (spatially limiting cell extension) and adhesion induction (guiding adhesome growth) are two main ways to induce cell polarization according to the microenvironment topographies. However, the mechanism of cell polarization induced by these tw...

The tribological properties of monomer casting nylon-6 (MC PA6) play an important role in ensuring energy consumption, component integrity and reliability in construction machinery. In this work, MC PA6 coatings containing different amount of lube base oil-loaded poly(urea-formaldehyde) microcapsules are prepared, and the tribological properties of...

Endowing strain sensors with superhydrophobicity is of great importance to guarantee their long-term service under harsh environments (such as wet, acid, alkali and salt atmospheres), whereas, the development of superhydrophobic strain sensors remains a great challenge. Herein, we realized a superhydrophobic and highly sensitive sensor for subtle h...

Dielectric elastomers widely used for actuation applications (e.g., soft robots, tunable optics) are vulnerable to mechanical damage, so healability is crucial and is associated with the reliability and service lifetime of dielectric elastomer actuators (DEAs). For DEAs, other than healability, simultaneously possessing a superior actuation perform...

Wearable strain sensors promote various emerging intelligent fields. Compared with the planar strain sensors, fibrous strain sensors are highly desirable for practical applications because they are favour of conformably attaching onto uneven surfaces and integrating into regular fabrics. Herein, inspired by the growth ring of tree, a highly stretch...

Increasingly serious electromagnetic radiation pollution puts forward higher demands on wearable fabrics: high electromagnetic interference (EMI) shielding effectiveness. Besides, the ability for the fabrics to keep the human body warm is also important in a frigid environment. However, there have been few reports on fabrics simultaneously with the...

Developing high dielectric performance of polymer nanocomposites is still a long-standing issue to simultaneously inherit the high dielectric constant of nanofillers and maintain the high breakdown strength of polymer matrix. In the current study, a tri-layered nanocomposite film is fabricated by a simple and effective solution-casting and dip-coat...

Barium ferrite (BaFe12O19) is considered as potential microwave absorption (MA) material thanks to the large saturation magnetization, high Curie temperature, and excellent chemical stability. The integration of carbon nanotube (CNT) can improve the dielectric loss of BaFe12O19 for further enhanced MA performance, nevertheless, the MA performance i...

Currently, many catalysts are inconvenient to separate from water, and the solvents used in the preparation process are not environmentally friendly, resulting in low recovery efficiency and secondary pollution. In this study, the magnetic and porous regenerated cellulose/carbon nanotubes/Fe3O4 nanoparticles (RC/CNTs/Fe3O4 NPs) composites were synt...

Oxidative stability of radiation crosslinked ultrahigh molecular weight polyethylene (UHMWPE) artificial joints is significantly improved by vitamin E (VE), but there is a dilemma that VE hinders crosslinking and thus jeopardizes the wear of UHMWPE. In this effort, we proposed an efficient strategy to stabilize UHMWPE under limited antioxidant cont...

Polymer dielectrics with a high energy density, an outstanding breakdown strength, and a low dielectric loss are currently in great demand in the field of film capacitors. Here, on the basis of fundamental understanding of dielectric relaxation in cellulose, environmentally friendly regenerated cellulose-based dielectrics were fabricated by manipul...

Liquid metals (LM) have a high potential for electromagnetic interference (EMI) shielding application, due to their soft feature and excellent electrical conductivity. However, it still remains a huge challenge to fabricate a self-standing LM film for EMI shielding, due to the liquid feature of LM. Herein, we designed a self-standing LM-based film...

Endowing electromagnetic interference (EMI) shielding materials with superhydrophobicity is regarded as an effective method to guarantee their service reliability under harsh environments. However, it is still a great challenging to integrate superhydrophobicity on EMI shielding materials due to the requirement for complex structural design. Herein...

In order to eliminate the secondary electromagnetic pollution, it is imperative to develop high-performance electromagnetic shielding materials with high-efficiency absorption coefficient. However, it remains a formidable challenge to simultaneously achieve high EMI shielding effectiveness (SE) and high absorption coefficient. Herein, a facile and...

It is a great challenge to develop a feasible strategy for reconciling barrier performance and mechanical ductility of environmentally friendly poly(lactic acid) (PLA) in the application of packaging industry. In the current study, the combination of manipulating the amorphous chain entanglement network of PLA and constructing “dual barrier walls”...

Endotracheal intubation is a crucial procedure for mechanical ventilation and respiratory support therapy. However, friction mismatch between the tube material and tissues often causes complications, such as laryngopharyngeal airway mucosa injury, tracheal granuloma, and inflammatory reaction. In this work, a highly lubricated coating was designed...

Mimicking the complex structure of natural bone remains a challenge for bone tissue scaffolds. In this study, a novel processing strategy was developed to prepare the bone-like scaffolds that are featured by highly oriented and fully interconnected pores. This type of biomimetic scaffolds was evolved from solid phase stretching of immiscible polyca...

Carbon aerogels derived from biomass have been considered as potential microwave absorption (MA) materials because of the intrinsic hierarchical porous structure, low density, and excellent heat resistance. However, high carbonation temperature or long carbonation time is always required to achieve optimized MA performance. Herein, the low-temperat...

Front Cover: In article number 2100012 by Zhong‐Ming Li, Gan‐Ji Zhong, and co‐workers, inspired by natural materials with oriented and gradient features, the gradient profiles of temperature and shear stress are utilized to drive the formation of these oriented and gradient features in cocontinuous blends. Compared with the isotropic cocontinuous s...

Space cooling and heating consume a large proportion of global energy, so passive thermal management materials (i.e., without energy input), especially dual-mode materials including cooling and heating bifunctions, are becoming more and more attractive in many areas. Herein, a function-switchable Janus membrane between cooling and heating consistin...

Inspired by the oriented, gradient, and heterogeneous characters of natural materials, an oriented and gradient cocontinuous structure is designed to obtain excellent mechanical performance via a gradient shear stress and temperature during melt processing. The investigation of hierarchical structure containing phase morphology, crystalline morphol...

To avoid catastrophic bacterial infection in prosthesis failure, ultrahigh molecular weight polyethylene (UHMWPE), a common bearing material of artificial joints, has been formulated with antibiotics to eliminate bacteria locally at the implant site. However, the pressing issues regarding cytotoxic effects and evolution of drug resistant bacteria n...

Cellulose, as the most abundant natural polymer material on the earth, has attracted worldwide attention due to its characteristics of reproducibility, universality, low cost, biocompatibility and biodegradability. Cellulose-based materials have potential value in supercapacitors, environment and biomedicine. The combination of cellulose and carbon...