The crucial role of hydroxyethyl methacrylate in the sintering of fused silica glass using ultraviolet-cured silica nanoparticle slurries: dispersing nanoparticles

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-09-16 DOI:10.1007/s10971-024-06540-4

Youwang Hu, Guilin Wang, Qinglong Zhang, Xiaoyan Sun, Haikuan Chen

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Abstract

Fused silica glass is prepared by dispersing silica nanoparticles (SiNPs) through the hydroxyethyl methacrylate (HEMA). The dispersion of SiNPs was characterized using transmission electron microscopy and small angle X-ray scattering. The rheological properties and functional groups of SiNP slurries were analyzed utilizing a rotational rheometer and fourier transform infrared spectroscopy. The sintering quality of the fused silica glass was characterized through scanning electron microscopy and X-ray diffraction. The research results show that HEMA adsorbs on the surface of SiNP through hydrogen bonding to form a solvation layer of a certain thickness, thereby hindering the agglomeration of SiNPs. The SiNP slurry system exhibits bi-fractal properties. The viscosity and shear stress of the SiNP slurry initially decrease and then increase with increasing HEMA content. Achieving a homogeneous dispersion of SiNPs in the slurry is essential for sintering high-quality silica glass. The internal voids of agglomerates are the origin of crack formation.

Graphical Abstract

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甲基丙烯酸羟乙酯在使用紫外线固化二氧化硅纳米颗粒浆料烧结熔融二氧化硅玻璃中的关键作用：分散纳米颗粒

通过甲基丙烯酸羟乙酯（HEMA）分散二氧化硅纳米颗粒（SiNPs），制备出熔融二氧化硅玻璃。利用透射电子显微镜和小角 X 射线散射对 SiNPs 的分散进行了表征。利用旋转流变仪和傅里叶变换红外光谱分析了 SiNP 浆料的流变特性和官能团。通过扫描电子显微镜和 X 射线衍射对熔融石英玻璃的烧结质量进行了表征。研究结果表明，HEMA 通过氢键吸附在 SiNP 表面，形成一定厚度的溶胶层，从而阻碍了 SiNP 的团聚。SiNP 浆料体系表现出双分形特性。随着 HEMA 含量的增加，SiNP 浆料的粘度和剪切应力先降低后升高。在浆料中实现 SiNPs 的均匀分散对于烧结高质量的硅玻璃至关重要。团聚体的内部空隙是裂纹形成的根源。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464