Abstract A novel nanocontainer, which could regulate the release of payloads, has been successfully fabricated by attaching zwitterionic sulfobetaine copolymer onto mesoporous silica nanoparticles (MSNs). RAFT polymerization is employed to prepare hybrid poly(2‐(dimethylamino)ethyl methacrylate)‐coated MSNs (MSN‐PDMAEMA). Subsequently, tertiary amine groups in PDMAEMA are quaternized with 1,3‐propanesultone get poly(DMAEMA‐ co ‐3‐dimethyl(methacryloyloxyethyl)ammonium...

Flexible sensors with wide sensing ranges require responsiveness under tiny and large strains. However, the development of strain detection is still a great challenge due to conflict between requirements sparse conductive networks requirement dense networks. Herein, we present facile method for fabricating gradient network composed The surface penetration technology in which carbon black (CB) penetrated from natural rubber latex (NRL) glove interior was used fabricate network. prolonged...

Ring around the rosy: A novel multifunctional disulfide-containing hyperbranched poly(amido amine) that is stimuli-responsive, biocompatible, biodegradable, and photoluminescent can assemble DNA into a well-defined nanoring with strong photoluminescence. The stimuli-responsive ring wall biocompatible controllably bioreducible; it has potential applications in gene drug delivery, molecular imaging. Detailed facts of importance to specialist readers are published as "Supporting Information"....

Abstract Multimodal imaging and simultaneous therapy is highly desirable because it can provide complementary information from each modality for accurate diagnosis and, at the same time, afford an imaging‐guided focused tumor therapy. In this study, indocyanine green (ICG), a near‐infrared (NIR) agent perfect NIR light absorber laser‐mediated photothermal therapy, was successfully incorporated into superparamagnetic Fe 3 O 4 @mSiO 2 core–shell nanoparticles to combine merit of NIR/magnetic...

Surface organic molecule modification of nanosized alumina particles is an effective way to improve its dispersion in polymer and enhance the properties nanocomposites. In present study, γ-aminopropyl triethoxysilane was used as a surface agent react with hydroxyl group on alumina. The modified were characterized by FT-IR spectra, particle-size analyzer transmission electron microscope (TEM). nanocomposites epoxy resin filled nano-sized before after fabricated physical blending. mechanical...

Abstract Three types of silane coupling agents, γ‐aminopropyltriethoxysilane, γ‐glycidoxypropyltrimethoxysilane, and γ‐methacryloxypropyltrimethoxysilane, were used as modifiers to modify the surface nanosilica, respectively, nanocomposites epoxy resin filled with nano‐sized silica modified by three agents prepared physical blending. The properties nanoparticles characterized Fourier transform infrared spectrum particle‐size analyzer. microstructure, mechanical behavior, heat resistant...

A facile temperature induced self-assembly and self-crosslinking method has been developed for preparing bioreducible nanogels/microgels without need of any stabilizer, catalyst or additional crosslinking agent. The size formed can be easily tuned via the polymer concentration.

The mechanical failure properties of rigid polyurethane foam treated under random vibration were studied experimentally and by numerical simulation. treatments carried out in the frequency range 5–500 Hz, 500–1000 1000–1500 respectively. influence frequency, mass block acceleration on performance was further investigated compression testing. experimental results showed that energy absorption foams decreased least between Hz. In addition, Hz range, reduction rate increased with increase...

Hyperbranched poly(amido amine) is grown from the surface of carbon nanotubesvia a multi-step Michael addition reaction, hence amido and amine units are linked onto nanotubes. These can facilitate assembly nanotubes with other functional polymersviahydrogen bonds. The external ultrasound-stimulus found to induce functionalized multi-walled linear into smart nanotube gel viahydrogen notable advantages this method that gelation very fast controlled by ultrasound strength, formed gels not only...

ABSTRACT The carboxyl terminated polybutadiene (CTBN) is utilized to improve the toughness of diglycidylether bisphenol A epoxy cured by heat and microwave. change viscosity, chemical groups, glass transition temperature ( T g ) system are analyzed. impact performance characterized evaluate fracture toughness, tensile properties also investigated. morphologies observed scanning electron microscopy for exploring toughening mechanism. viscosity results indicate that increases with increasing...

To examine the risk factors for haptic malposition in eyes with implantable collamer lens (ICL).

Nano-titanium dioxides (nano-TiO2) surface modified with isopropyl tri(dioctylpyrophosphate) titanate (NDZ-201), a coupling agent, and 3-glycidoxypropyltrimethoxysilane (KH-560), silane were separately mixed bisphenol A epoxy resin (DEGBA) prepolymer then cured using UV-normal temperature synergistic curing process. Then, the isothermal process of system was investigated by differential scanning calorimetry (DSC). The relationship between organization structures, mechanical properties, heat...

Polycations have high DNA condensing ability, low immunogenicity, and great adaptability, which make them promising for gene delivery. However, transfection efficiency inevitable toxicity are challenges of cationic polymers. In this study, we prepared a novel Janus dendritic polymer via one-step Michael addition reaction branched low-molecular-weight polyethylenimine (PEI, 1800 Da) polythioether. The amphiphilic can self-assemble into stable nanomicelles with surface charge potential (+91.8...

Choroidal neovascularization (CNV) is a severe complication observed in individuals with pathological myopia (PM). Our hypothesis that specific metabolic alterations occur during the development of CNV patients PM. To investigate this, an untargeted metabolomics analysis was conducted using gas chromatography-mass spectrometry (GC-MS) and liquid (LC-MS) on aqueous humor (AH) samples obtained from meticulously matched PM patients, including those (n = 11) without 11). The aimed to identify...

Abstract In this paper, the mechanical properties and thermal expansibility of cyanate resin (CE) copolymerization modified by epoxy (EP) under medium‐low temperature curing process were studied. The was analyzed, results showed that initial reduced 87°C compared with blend further when dibutyltin‐dilaurate used. test tensile bending strength highest, which 55.5 97.3 MPa, respectively. scanning electron microscopy 80 wt% content had coarsest sections, largest number fracture stripes rich...