Synthesis and Characterization of St-AN-(KH-570) Block Macromolecular Coupling Agent Copolymers

Cheng, Guojun; Song, Ruijuan; Miao, Jibing; Qian, Jiasheng

doi:10.14233/ajchem.2013.oh28

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…KH‐570 was purchased from the Nanjing Shuguang silane Chemical Co. Ltd. The MCA (Mn = 10 500) was synthesised in the laboratory, which has been described previously [10]. SBR, with trademark SBR 1502, was manufactured by the Jilin Petrochemical Co. Ltd. Other reagents and rubber additives were industrial grade and used as received.…”

Section: Methodsmentioning

confidence: 99%

Comparative study on different coupling agents used as surfactants: effect on dispersion properties of TiN nanoparticles

Cheng

Qian

Xia

et al. 2014

Micro & Nano Letters

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Γ-methacryloxypropyl trimethoxy silane (KH-570) and macromolecular coupling agents (MCA) (St/AN/KH-570 random copolymer) were used as surfactants for the surface modification of titanium nitride (TiN) nanoparticles (nanoTiN). The structure and dispersion properties of the modified nanoTiN were investigated by Fourier transform infrared (FTIR) spectra, X-ray photoelectron spectroscopy (XPS), a sedimentation stability experiment (SSE), a contact angle measuring instrument (CAMI) and a high-resolution transmission electron micrograph (HRTEM). According to the spectra of FTIR and XPS, it can be inferred that the KH-570 and MCA covalently bonded on the surface of nanoTiN and an organic coating layer was formed. The SSE and the CAMI showed that the stable dispersion and the hydrophobic property were improved significantly. The results of the HRTEM showed that the surfactants improved the dispersibility of particles in the organic solution and the SBR matrix. It is found that the MCA can more effectively improve the dispersion stability of nanoTiN because of a more strong steric stabilisation of the macromolecular structure, which facilitated to hinder the aggregation of nanoparticles.

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Section: Methodsmentioning

confidence: 99%

Comparative study on different coupling agents used as surfactants: effect on dispersion properties of TiN nanoparticles

Cheng

Qian

Xia

et al. 2014

Micro & Nano Letters

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The surface modification of TiN nano-particles using macromolecular coupling agents, and their resulting dispersibility

Cheng

Qian

Miao

et al. 2014

Applied Surface Science

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A Study on the Application Performance of High-Aspect-Ratio Nano-Ettringite in Photocurable Resin Composites

Cao,

Zhu

2024

Materials

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In this study, the impact of the addition of high-aspect-ratio nano-ettringite to photocurable epoxy acrylate resin was explored. The nano-ettringite samples were modified using γ-Aminopropyltriethoxysilane (KH-550) and γ-methacryloxypropyl trimethoxy silane (KH-570). Then, 3 wt% or 6 wt% KH-550-modified, KH-570-modified, and unmodified nano-ettringite samples were dispersed into resin via ultrasonic treatment in conjunction with mechanical stirring. The grafting effects of nano-ettringite onto KH-550 or KH-570 were analyzed through scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and thermogravimetric (TG) analysis. The results demonstrate that KH-550 and KH-570 have been successfully grafted onto the surface of nano-ettringite. In addition, this study also focuses on the variations of composite materials in the viscosity, shrinkage, tensile strength, and elongation at break. The results indicate that increased dosages of unmodified, KH-550-modified, and KH-570-modified nano-ettringite led to increased viscosity of the composite while reducing shrinkage. At the same dosage, the photocurable resin containing KH-570-modified nano-ettringite demonstrated a lower shrinkage and a higher tensile strength. From the analysis of tensile fracture surfaces, it was observed that compared to the KH-550 modified and unmodified variants, the KH-570 modified nano-ettringite exhibits superior dispersibility in photocurable epoxy acrylate resin. Notably, when the amount of KH-570-modified nano-ettringite was 3 wt%, the highest tensile strength of the composite was 64.61 MPa, representing a 72.57% increase compared to the blank sample. Furthermore, the incorporation of KH-570-modified nano-ettringite as a filler provides a new perspective for improving the performance of photocurable epoxy acrylate resin composites.

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Synthesis and Characterization of St-AN-(KH-570) Block Macromolecular Coupling Agent Copolymers

Cited by 3 publications

References 16 publications

Comparative study on different coupling agents used as surfactants: effect on dispersion properties of TiN nanoparticles

Comparative study on different coupling agents used as surfactants: effect on dispersion properties of TiN nanoparticles

The surface modification of TiN nano-particles using macromolecular coupling agents, and their resulting dispersibility

A Study on the Application Performance of High-Aspect-Ratio Nano-Ettringite in Photocurable Resin Composites

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