Photocurable Poly(ethylene glycol) Diacrylate Resins with Variable Silica Nanoparticle Loading
Photocurable Poly(ethylene glycol) Diacrylate Resins with Variable Silica Nanoparticle Loading
复制标题
DOI：
10.1021/acs.iecr.9b02068
复制
发表时间：
2019-07
影响因子：
4.2
通讯作者：
Alexis Hocken;Yezhou Yang;F. Beyer;B. Morgan;K. Kline;T. Piper;M. Green
中科院分区：
文献类型：
--
作者：
Alexis Hocken;Yezhou Yang;F. Beyer;B. Morgan;K. Kline;T. Piper;M. Green
光固化纳米复合材料在组织工程、先进制造和结构多功能材料方面具有巨大潜力。该项目研究二氧化硅（SiO2）纳米粒子负载量对纳米复合材料的热、机械、物理和形态特征的影响。 SiO2 纳米粒子浓度的增加会导致纳米复合材料的凝胶分数降低，在纳米粒子负载量较低的情况下，会降低热性能和机械性能。然而，进一步添加（>3.8 wt%）会导致玻璃化转变温度、杨氏模量和极限压缩强度增加。根据吸水实验，纳米粒子的添加对亲水性没有显着影响。小角 X 射线散射实验与扫描电子显微镜和透射电子显微镜相结合，表明多峰粒径分布和大规模聚集体的存在。
Photocurable nanocomposites have tremendous potential in tissue engineering, advanced manufacturing, and structural, multifunctional materials. This project investigates the effect of silica (SiO2) nanoparticle loading content on the thermal, mechanical, physical, and morphological characteristics of the nanocomposite. An increased concentration of SiO2 nanoparticles causes a decrease in the gel fraction of the nanocomposite, which, at low nanoparticle loading, degrades the thermal and mechanical properties. However, further addition (>3.8 wt %) causes an increase in the glass-transition temperature, Young’s modulus, and ultimate compressive strength. The addition of the nanoparticles had no significant effect on the hydrophilicity according to water uptake experiments. Small-angle X-ray scattering experiments, in conjunction with scanning electron microscopy and transmission electron microscopy, indicated a multimodal particle size distribution and the presence of large-scale aggregates.