基于共价锚定在环氧基质上的烷基硅烷功能化纳米颗粒的杂化材料。

Hybrid Materials Based on Nanoparticles Functionalized with Alkylsilanes Covalently Anchored to Epoxy Matrices.

作者信息

Salas Alexis, Jaramillo Andrés Felipe, Palacio Daniel Andrés, Díaz-Gómez Andrés, Rojas David, Medina Carlos, Pérez-Tijerina Eduardo, Solís-Pomar Francisco, Meléndrez Manuel Francisco

机构信息

Department of Mechanical Engineering (DIM), Faculty of Engineering, University of Concepción, Edmundo Larenas 219, Concepcion 4070409, Chile.

Interdisciplinary Group of Applied Nanotechnology (GINA), Hybrid Materials Laboratory (HML), Department of Materials Engineering (DIMAT), Faculty of Engineering, University of Concepcion, 270 Edmundo Larenas, Box 160-C, Concepcion 4070409, Chile.

出版信息

Polymers (Basel). 2022 Apr 13;14(8):1579. doi: 10.3390/polym14081579.

DOI:10.3390/polym14081579

PMID:35458329

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9029025/

Abstract

In this work, the surface modification of zinc oxide nanoparticles (ZnO-NPs) with 3-glycidyloxy-propyl-trimethoxysilane (GPTMS) was investigated. The ZnO-NPs were synthesized using the physical method of continuous arc discharge in controlled atmosphere (DARC-AC). The surface modification was carried out using a chemical method with constant agitation for 24 h at room temperature. This surface functionalization of zinc oxide nanoparticles (ZnO-NPs-GPTMS) was experimentally confirmed by infrared spectroscopy (FT-IR), TGA, and XRD, and its morphological characterization was performed with SEM. The increase in mechanical bending properties in the two final hybrid materials compared to the base polymers was verified. An average increase of 67% was achieved with a moderate decrease in ductility. In the case of compressive strength, they showed mixed results, maintaining the properties. With respect to thermal properties, it was observed that inorganic reinforcement conferred resistance to degradation on the base material, giving a greater resistance to high temperatures.

摘要

在本研究中，对采用3-缩水甘油氧基丙基三甲氧基硅烷（GPTMS）对氧化锌纳米颗粒（ZnO-NPs）进行表面改性展开了研究。ZnO-NPs通过在可控气氛中连续电弧放电的物理方法（DARC-AC）合成。表面改性采用化学方法，在室温下持续搅拌24小时。通过红外光谱（FT-IR）、热重分析（TGA）和X射线衍射（XRD）对氧化锌纳米颗粒（ZnO-NPs-GPTMS）的这种表面功能化进行了实验确认，并用扫描电子显微镜（SEM）对其进行了形态表征。与基础聚合物相比，两种最终杂化材料的机械弯曲性能有所提高得到了验证。实现了平均67%的提高，同时延展性略有下降。在抗压强度方面，结果好坏参半，性能得以保持。关于热性能，观察到无机增强赋予了基础材料抗降解能力，使其具有更高的耐高温性。