Jiwen Hu

• Chinese Academy of Sciences

The production of epichlorohydrin (ECH) is of great importance in the chemical industry, but due to the exothermic reaction in its production and the instability of ECH itself, it is potentially thermally hazardous during the synthesis process. This study used a synergistic approach using both simulation and experimental methods to optimize the pro...

A multi-functional AgNWs-Fe 3 O 4 /ANF composite film with a Janus-like architecture was prepared, exhibiting excellent conductivity and EMI shielding performance. The synergistic coupling between AgNWs and Fe 3 O 4 for EMI shielding was demonstrated.

The pH‐responsive hydrogels have potential applications in food visualization detection, but their fragile mechanical properties limit their applicability. The excellent mechanical properties and thermal stability of aramid nanofibers (ANFs) can improve the structural stability of hydrogels. In this study, the surface properties of ANFs were enhanc...

Epoxy acrylate is produced by esterifying epoxy resin and acrylic acid through a ring-opening reaction. This process is highly exothermic and can be challenging to control gel formation. The thermal hazards of epoxy acrylate preparation were evaluated in this study by investigating the ring-opening esterification reaction between acrylic acid (AA)...

Composite polymer materials featured superior thermal conductivity, flame retardancy, and electromagnetic shielding performance are increasingly in demand due to the rapid development of highly miniaturized, portable, and flexible electronic devices. Herein, a facile and green ball milling shear method is utilized for generating MXene@Boron nitride...

Epoxidized soybean oil (ESO) is a sustainable alternative that reduces emissions of volatile organic compounds, enhances coating and adhesion properties, and has a wide range of applications in bio-based composites. However, the industrial-scale production of ESO through the Prilezhaev reaction presents challenges in terms of temperature regulation...

Based on the Prileschajet reaction, formic acid (FA), hydrogen peroxide (H2O2) were selected as the oxidants and sulfuric acid (H2SO4) as the catalyst to establish the reaction model. Initially, the reaction mechanism of the system was explained by investigating the process conditions of soybean oil (SBO), and the results showed that the two-phase...

This paper provides a novel strategy for the preparation of composite separator. • The phase change material was introduced into the separator coating layer. • This method alleviating the heat accumulation inside the battery at the source. A B S T R A C T Lithium-ion batteries have received a great deal of attention on the world stage due to their...

The epoxidation process of soybean oil (SBO) and peracid produced by 50 wt% hydrogen peroxide (H 2 O 2 ) and formic acid (FA) was studied with sulfuric acid (H 2 SO 4 ) as a catalyst. Three reaction parameters, including reaction temperature, FA-to-SBO ratio, and H 2 O 2 -to-SBO ratio, were investigated, along with the combined effect on oxirane va...

Thermal runaway accidents have occurred mainly during storage and transportation of azo compounds because large amounts of heat were released during the course of thermal decomposition. In this study, the thermal runaway characteristics of 2,2′-azobis(2-methylbutyronitrile) (AMBN) were first comprehensively investigated via differential scanning ca...

Synthetic reactions with distinctive physicochemical properties and the study of functional groups during synthesis provide an effective way to design polymers on an individual basis. The functionalization of polymethylhydrosiloxane (PMHS) has been performed via hydrosilylation of PMHS with selected alkenes with different active functional groups....

High purity silver nanowires (AgNWs) have received a lot of attention from researchers in the field of conductive materials. Conventional polyol synthesis method of AgNWs inevitably leads to the formation of byproduct such as silver nanoparticles. These silver nanoparticles weaken the performance of AgNWs-based flexible displays and must be cleaned...

UV-curing technology is an efficient, energy-saving and eco-friendly technology, which has been widely used in industrial production and daily life. However, UV curing is difficult to achieve with thick coatings, coloured coatings, and shadowed regions of coatings, which greatly limits the applicability of this process. As reported herein, UV/moist...

The condensed structure of a material is the basis for the properties of polymeric materials, where the crystalline structure is the most ordered conformation of the polymer condensed structure. The mechanical properties are one of the most fundamental properties of polymer materials and the crystalline state has an important influence on the mecha...

As described herein, a simple one-step hydrosilylation reaction was employed to synthesize alicyclic epoxy silicone prepolymers by using poly(dimethylsiloxane-co-methylhydrosiloxane) (PDMS-PHMS) with different hydrogen contents and 4-vinyl-1-cyclohexene-1,2 epoxide (VCHO) as precursors. The structures of the synthesized epoxy polysiloxane oligomer...

The hydrosilylation of polymethyl-hydrosiloxane (PMHS) with alkenes comprising alkyl, epoxy alkyl, and other functional groups under the action of platinum catalysts were investigated in this work. As reported herein, the synthetic routes, reaction conditions, synthetic procedures were studied. Moreover, a more effective preparation method was conc...

The hydrosilylation addition reaction is one of the most important methods for the synthesis of silicone compounds, in which the catalyst plays an extremely important role. Currently, the most widely used hydrosilylation addition catalyst is platinum metal catalysts, but they are difficult to recycle, expensive and contaminates the product frequent...

A colorimetric pH‐sensitive hydrogel indicator integrated with the smartphone for real‐time and visual food spoilage monitoring was developed. Herein, the poly(vinyl alcohol)/sodium alginate (PVA/SA) hydrogel was used as the carriers for the pH‐sensitive mixed‐dye methyl red/bromothymol blue (MR/BB), which can be employed as an amine indicator. The...

Ultraviolet (UV) photocuring technology has gained importance in crosslinking of polymers, as it allows fast curing rate, low energy consumption and no volatile organic compounds (VOCs). However, the photopolymerization of very thick films and in shadow areas where the light penetration is inhibited (e. g. in filled, pigmented, dispersed samples) r...

The mechanical performance is critical for hydrogels that are used as strain sensors. p-Aramid nanofiber (ANF) is preferable as an additive to the reinforce the mechanical performance of a poly(vinyl alcohol) (PVA). However, due to the limited hydrogen bond sites, the preparation of ultra-stretchable, ANF-based hydrogel strain sensor is still a cha...

UV curing technology is a new green technology developed in the 21st century, and has been widely used in daily life and industrial production. However, a major drawback encountered with UV curing is oxygen inhibition, especially in free radical photopolymerization. As reported herein, three multifunctional silicone acrylate prepolymers were obtain...

Three-dimensional pyramidal polymer single crystals provide spatial gradient variations within the crystal molecules, and these variations facilitate the study of the relationship between structure and properties within the molecules of various complexes with anisotropic structures. As described herein, we propose a low-temperature-assisted microfl...

Ni12P5 has excellent electrochemical properties due to the existence of a large number of NiP bonds with abundant phosphorus vacancies. RuO2 has good electrical conductivity and catalytic activity, and its OER activity is very significant. In this paper, RuO2 nanoparticles were loaded onto the surfaces of Ni12P5 particles, forming RuO2/Ni12P5/C com...

As reported herein, three multifunctional silicone acrylate prepolymers were obtained via the one-step hydrosilylation of pentaerythritol tetraacrylate (PETTA) and hydride-terminated polydimethylsiloxane (H-PDMS). The structures of these prepolymers were subsequently characterized by FT-IR and ¹H NMR spectroscopy techniques, which confirmed the suc...

Due to its unique properties, raspberry-like colloidal particles (RCPs) have been widely used in various fields. However, a facile, scalable and robust approach of producing raspberry-like polymeric particles remains an ongoing challenge. Herein, raspberry-like poly(styrene-co-divinylbenzene) (PSD) polymeric particles were fabricated by one-step di...

A novel type of poly(St–SSS–APEG) (SAS) copolymer was prepared by graft polymerization with corn starch (St) as the backbone chain and with sodium p-styrene sulfonate (SSS) and allyl polyethylene glycol (APEG-1000) as side chains in aqueous solution. This graft copolymer can serve as an effective dispersing agent for multi-walled carbon nanotubes (...

A novel type of liquid gating technology has been developed to prepare a polyethylene oxide (PEO) single-crystal film, and the crystal growth was observed via atomic force microscopy. The self-seeding method has been widely used in the preparation of polymer single crystals, but the mechanism through which single polymer crystals are formed via the...

Thermal runaway primarily occurs during the course of copolymerization due to the release of large amounts of heat. In this paper, the thermal risk associated with styrene-methyl methacrylate bulk copolymerization was firstly investigated by differential scanning calorimetry (DSC) and accelerating rate calorimetry (ARC). The result found that the e...

A heterogeneous platinum catalyst with tridentate pyridine Schiff base ligands supported on silica gel is reported. The catalyst was fully characterized via FTIR, solid-state ¹³C NMR spectroscopy, X-ray photoelectron spectroscopy (XPS), N2 adsorption/desorption analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission...

We herein report a new polyol-based method for the synthesis of silver nanorings. The effects of the molecular weight of polyvinylpyrrolidone (PVP), the concentration of KBr, the reaction time, and stirring speed on the final morphologies of these silver nanorings were studied. The structures of these silver nanorings were characterized by scanning...

Reported herein is a magnetically separable heterogeneous nano catalyst Fe3O4@SiO2-biIMI- PtCl2, which is prepared by firstly applying a SiO2 coating onto readily synthesized magnetite nanoparticles via the hydrolysis condensation of tetraethyl orthosilicate (TEOS) under basic conditions, then modifying it using aminopropyl triethoxysilane and bis(...

The modified polyol method for the production of high aspect ratio silver nanowires (AgNWs) has received significant attention from many researchers due to its convenience and simplicity. Poly(vinylpyrrolidone) (PVP) is generally used as a template and capping agent in this method to stabilize the nanowires. However, the influence of different PVP...

Herein, we demonstrate a facile and scalable approach to prepare triple-scale colloidal particles via a one-step dispersion polymerization of glycidyl methacrylate and ethylene glycol dimethacrylate in a toluene/ethanol solvent mixture. The morphologies of the colloidal particles can be readily tuned by adjusting the composition of the binary solve...

With the rapid development of polymer materials, the simultaneous acquisition of micro‐nano structure and mesoscopic mechanical properties from the material surface with the transverse resolution of nanoscale has become a hot spot in the research of polymer materials. Atomic force microscopy‐based high‐resolution imaging and single‐molecule force s...

An imidazolyl Schiff base‐containing periodic mesoporous organosilica (PMO) was synthesized via co‐condensation reactions between a newly prepared bis (imidazolyl)imine‐bridged bis silane and tetraethyl orthosilicate in the presence of cetyltrimethyl ammonium bromide as a soft template. The resultant as‐synthesized PMO was then employed as a solid...

p-Aramid is an ideal building block for forward osmosis (FO) membranes due to its extraordinary thermal resistance, chemical stability, and mechanical properties. However, existing aramid membranes have certain limitations such as large pore diameters and low salt rejection rates. In this work, we describe a facile solvent exchange-delay phase inve...

Reported herein is an easy‐to‐prepare novel heterogeneous catalyst of platinum complexes bearing binary ligands of bidentate naphthalenolimine and cyclo‐1,5‐octadiene that are anchored onto mesoporous silica SBA‐15. The presence of the binary ligands not only stabilized the platinum, but also enabled the platinum atoms to form nanoclusters with dia...

A nanofibrous membrane with a hierarchical structure that was prepared from p-aramid nanofibers via a solvent-induced phase inversion process is reported herein. First, the p-aramid threads were dispersed into and mechanically stirred in a solution of potassium tert-butoxide and methanol for 36 h to yield p-aramid nanofibers. The average length and...

Silver nanowires (AgNWs) have attracted attentions form both academia and industry due to their outstanding electronic and optical properties. The AgNW-based devices for various uses were invented in recent years. It is well known that the sizes of AgNWs have a crucial effect on the performance of AgNW-based devices. However, how to synthesize AgNW...

We report herein a visible light‐induced metal‐free living polymerization with high oxygen tolerance that can be performed in aqueous media. In contrast with ordinary living/controlled radical polymerizations, oxygen can be present throughout the entire reaction process. This reaction can be photo‐induced and proceeds at room temperature. First, we...

Reported herein is a novel strategy for the rapid and efficient collection of platinum from Karstedt’s catalyst solution. By taking advantage of a ligand-exchange reaction between alkynols and the 1,3-divinyltetramethyldisiloxane ligand (MViMVi) that coordinated with platinum (Pt(0)), the Karstedt’s catalyst particles with a size of approximately 2...

Silver nanowires have attracted a lot of attention in both academia and industry because of their potential applications in many electronic devices. In the past decade, there have been many research articles relating to silver nanowires, but there have been relatively few review articles focusing on these unique nanomaterials. In this review, the d...

We have recently developed a novel and simple approach based on aqueous solutions of block copolymer micelles for the construction of WFs with wettability ranging from the superhydrophobic to the superamphiphobic regime. That is, the copolymers were initially dispersed into water to yield a micelle solution with the insoluble fluorinated block serv...

We report here a facile and reproducible strategy for fabricating highly dispersible silver nanowires (AgNWs) in organic solvents using poly(methyl methacrylate)-b-poly(acrylic acid) (PMMA-b-PAA) diblock copolymers as the dispersant. The copolymers could be assembled into spherical micelles with PMMA as the core and the solvated PAA block as the co...

A novel multifunctional amphiphilic graft copolymer has been synthesized consisting of a biodegradable poly(l-aspartic acid) backbone that was decorated by water-soluble poly(ethylene glycol) (PEG) and pH-responsive poly(N,N-diethylaminoethyl methacrylate) (PDEAEMA) side-chains as well as thiol pendant groups. This graft copolymer together with dox...

Reported herein is a chiral resolution polysulfone membrane prepared via mussel-inspired chemistry. Polysulfone membranes were modified with dopamine, which underwent in situ polymerization on the membrane substrate, and β-cyclodextrin was used as a chiral selector. The preparation conditions were optimized and the resultant membrane obtained under...

A series of ternary graft copolymers with poly(3-azido-2-hydroxypropyl methacrylate) (P(GMA-N3)) as the main chain, end-functionalized poly(ethylene glycol) methyl ether (MPEG), poly(t-butyl acrylate) (PtBA), and poly(2-cinnamoyloxyethyl methacrylate) (PCEMA) as the side-chains, was synthesized via the combination of atom transfer radical polymeriz...

A novel amphiphilic binary graft copolymer poly(glycidyl methacrylate)-graft-[poly(2-cinnamoyl-oxyethyl methacrylate)-random-methoxy polyethylene glycol] (PGMA-g-(PCEMA-r-MPEG)) was successfully synthesized by a combination of atom transfer radical polymerization (ATRP) and click reaction, in which alkyne-end-functionalized poly(2-cinnamoyloxyethyl...

Many strategies have been developed to prepare superamphiphobic fabrics that strongly repel water- and oil-borne contaminants and etchants. However, the common drawback in these reported strategies is the use of organic solvents, which should be eliminated or reduced for practical applications. In this paper, the diblock copolymer of poly(2-perfluo...

Aramid nanofiber (ANF)-coated separators were successfully prepared by the dip-coating of a cationized polypropylene (PP) porous separator in an ANF dispersion in DMSO. The ANFs were successfully coated onto the surface of the cationized PP separator as demonstrated by FT-IR and XPS measurements and the ANFs could be directly observed on the surfac...

A ternary system thermoresponsive hydrogel, poly(N-isopropylacrylamide-co-hydroxyethyl methylacrylate polycaprolactone)/hydroxypropyl cellulose (or P(NIPAAm-co-HEMAPCL)/HPC), was prepared via "alkynyl/azide" click chemistry between the azide modified graft copolymer P(NIPAAm-co-HEMAPCL-N3) and the alkynyl modified HPC (or alkynyl-HPC). The structur...

Reported herein is the preparation of poly((glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)) raspberry-like colloidal particles (also denoted as RPs) bearing micro/nano-scale surface roughness and the fabrication of superhydrophobic films with tunable adhesion derived from the RPs after their fluorination. The RPs were prepared via the o...

The diblock copolymer poly[2,2,2-trifluoroethyl methacrylate-r-styrene] -block-poly[(2-cinnamoyloxyethyl methacrylate)] (P(TFEMA-r-Sty)-b-PCEMA) was synthesized via atom transfer radical polymerization (ATRP) methods. This copolymer underwent self-assembly in TFEMA/CH2Cl2 to form spherical micelles. Photocrosslinking the PCEMA domains of these mice...

The cross-linked cassava xanthate (CCX) was synthesized and used to remove Cr6+ ions from aqueous solution. The influence of multiple factors on the sorption process, including pH, temperature, contact time, sulfur content, and sorbent/sorbate ratio, was quantitatively investigated. The sorption capacity of the CCX was confirmed under different con...

Silver nanowire (Ag NW)–shape memory polymer composites in bilayer structure were fabricated which exhibited flexibility and superior electrical conductivity. The morphologies of the Ag NWs and the composites were investigated by multiple tools. The composites were able to maintain most of the conductivity as elongation of 12% by measuring the shee...

An amphiphilic binary graft copolymer polysulfone-graft-[poly(methyl methacrylate)-random-poly(acrylic acid)], PSf-g-(PMMA-r-PAA), was synthesized via a combination of atom transfer radical polymerization (ATRP) and click chemistry. This copolymer and polysulfone (PSf) were used to prepare porous membranes through the phase inversion method, which...

Poly(2-hydroxyethyl methacrylate) (PHEMA) end-capped with living chloride and alkyne groups was synthesized via ATRP of HEMA using CuCl/CuCl2/2,2′-bipyridine as a catalyst in a solvent mixture of methanol and 2-butanone. The effects of parameters including the initiator, solvent, temperature and initial monomer to initiator ratios on polymerization...

Stearic and oleic acid-coated Fe3O4 nanoparticles were dispersed in decahydronaphthalene (DN). This oil phase was dispersed in water using ternary graft copolymer poly(glycidyl methacrylate)-graft-[polystyrene-ran-(methoxy polyethylene glycol)-ran-poly(2-cinnamoyloxyethyl methacrylate)] or PGMA-g-(PS-r-MPEG-r-PCEMA) to yield capsules. The walls of...

Cu(2+)/amylose assemblies of various sizes were prepared through the Cu(2+) ion induced-assembly of amylose. These assembly structures were characterized via transmission electronic microscopy (TEM), scanning electronic microscopy (SEM), dynamic light scattering (DLS), (1)H NMR analysis, fluorescence spectroscopy (FL) and UV-vis absorption spectros...

Three ternary graft copolymers bearing polystyrene (PS), poly(ethylene glycol) methyl ether (MPEG), and poly(acrylic acid) (PAA) side chains were synthesized and characterized. At pH = 7.4, these copolymers stabilized doxorubicin (DOX)-containing benzyl benzoate (BBZ) nanoemulsion droplets in water and formed a compact polymer layer to inhibit DOX...

Alkyne end-tagged poly(ethylene glycol) methyl ether, polystyrene, and poly(tert-butyl acrylate) (denoted as MPEG–CCH, PS–CCH, and PtBA–CCH, respectively) were grafted randomly onto a (PGMA–N3) backbone via “click” chemistry to produce a series of ternary graft copolymers PGMA-g-(MPEG-r-PtBA-r-PS). The selective hydrolysis of the PtBA chains into p...