Organic-Inorganic Hydrophobic Nanocomposite Film with a Core-Shell Structure
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School of Civil Engineering, Central South University, 22 Shaoshan Road, Changsha 410075, China
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School of Civil Engineering, Shenzhen University, 3688 Nanhai Road, Shenzhen 518060, China
3
National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha 410075, China
4
Graduate School at Shenzhen, Tsing Hua University, 2279 Lishui Road, Shenzhen 518055, China
*
Author to whom correspondence should be addressed.
Academic Editor: Mady Elbahri
Materials 2016, 9(12), 1021; https://doi.org/10.3390/ma9121021
Received: 23 September 2016 / Revised: 1 December 2016 / Accepted: 5 December 2016 / Published: 17 December 2016
(This article belongs to the Special Issue Green Nanotechnology)
A method to prepare novel organic-inorganic hydrophobic nanocomposite films was proposed by a site-specific polymerization process. The inorganic part, the core of the nanocomposite, is a ternary SiO2–Al2O3–TiO2 nanoparticles, which is grafted with methacryloxy propyl trimethoxyl silane (KH570), and wrapped by fluoride and siloxane polymers. The synthesized samples are characterized by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectrscopy, X-ray diffractometry (XRD), contact angle meter (CA), and scanning electron microscope (SEM). The results indicate that the novel organic-inorganic hydrophobic nanocomposite with a core-shell structure was synthesized successfully. XRD analysis reveals the nanocomposite film has an amorphous structure, and FTIR analysis indicates the nanoparticles react with a silane coupling agent (methacryloxy propyl trimethoxyl silane KH570). Interestingly, the morphology of the nanoparticle film is influenced by the composition of the core. Further, comparing with the film synthesized by silica nanoparticles, the film formed from SiO2–Al2O3–TiO2 nanoparticles has higher hydrophobic performance, i.e., the contact angle is greater than 101.7°. In addition, the TEM analysis reveals that the crystal structure of the particles can be changed at high temperatures.
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Keywords:
core-shell structure; ternary nanoparticles; crystal; monomer; emulsion
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MDPI and ACS Style
Liu, P.; Chen, Y.; Yu, Z. Organic-Inorganic Hydrophobic Nanocomposite Film with a Core-Shell Structure. Materials 2016, 9, 1021.
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