Surface Modification of Nano-TiO&lt;sub&gt;2&lt;/sub&gt; by Titanate Coupling Agent

Yu, Shou Wu; Xiao, Shu; Sang, Xiao; Hou, Gui Xiang

doi:10.4028/www.scientific.net/amr.538-541.350

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…The study results reveal that the mechanical properties of the epoxy composite were enhanced using TCA through the formation of a strong interface or adhesion between the filler and matrix. Yu et al 75) evaluated the effects of modifying the surface of TiO2 nanoparticles with TCA and verified the interactions between nano-TiO 2 and TCA. Moreover, the modification caused the large aggregation of nanoparticles to disintegrate into fine particles.…”

Section: Nanoparticlesmentioning

confidence: 99%

Review of titanate coupling agents and their application for dental composite fabrication

Elshereksi

Ghazali

Muchtar

et al. 2017

Dental Materials Journal

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Silane is a dominant coupler that is widely used in dentistry to promote adhesion among the components of dental composites. Silica-based fillers can be easily silanized because of their similarly ordered structure. However, silane is hydrolytically degraded in the aqueous oral environment and inefficiently bonds to non-silica fillers. Thus, the development of hydrolytically stable dental composites is an important objective in the research on dental materials. Titanate coupling agents (TCAs) exhibit satisfactory interfacial bonding, enhanced homogeneous filler dispersion, and improved mechanical properties of the composites. Titanates also provide superior hydrolytic stability in wet environments, which should be considered in fabricating dental composites. The addition of a small amount of titanates can improve the resistance of the composites to moisture. This paper reviews the effects of the instability of silanes in moisture on the performance of dental composites and presents TCAs as alternative couplers to silanes for fabricating dental composites.

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Section: Nanoparticlesmentioning

confidence: 99%

Review of titanate coupling agents and their application for dental composite fabrication

Elshereksi

Ghazali

Muchtar

et al. 2017

Dental Materials Journal

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“…The sharp initiated peak in the line of treated TiO 2 nanotube (M-TiO 2 ) at 2,919 cm −1 represents the absorption peaks of methylene and methyl [29]. Also, at the same modified line b (M-TiO 2 ) at Figure 2, the small initiated peak at 1,682 cm −1 referring to C=O of the titanate coupling agents [25,28,30].…”

Section: Resultsmentioning

confidence: 91%

“…The broad peak presented at 3,320 cm −1 and the peak at 1,622 cm −1 can be attributed to the bending vibration peak and stretching vibrations peak of the hydroxyl (O-H and H-O-H) available on the surface of TiO 2 nanotube [26,27]. Upon comparing the graph lines of the treated (M-TiO 2 ) and none treated TiO 2 nanotube material, the change in peak after treatment presented at 2,381cm −1 can be attributed to the stretching vibrations peak initiated from C=O of CO 2 , that has been absorbed by the TiO 2 nanotube material [28]. The sharp initiated peak in the line of treated TiO 2 nanotube (M-TiO 2 ) at 2,919 cm −1 represents the absorption peaks of methylene and methyl [29].…”

Section: Resultsmentioning

confidence: 94%

Physical and Chemical Investigation of TiO2 Nanotubes Treated with Isopropyl Triisostearoyl Titanate (KR-TTS)

Sabri

Satgunam

Manap

et al. 2023

Journal of Nanomaterials

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The aim of this study is to investigate the effect of isopropyl triisostearoyl titanate (KR-TTS) as a titanate coupling agent (TCA) on surface modification of TiO2 nanotube (TNT) material. From the physical and chemical studies that have been performed on the modified TiO2 nanotube, scanning electron microscope micrographs, energy-dispersive X-ray and viscosity indicated that there was significant reduction in particle aggregation of the modified TiO2 Nanotube. FTIR spectroscopy confirmed that the functional group of the TCA reacted with the hydroxyl groups present on the surface of TiO2 nanotube resulting in an altered surface property from being hydrophilic to hydrophobic. X-ray diffraction indicated that crystalline structure did not change upon the modification with the coupling agent. Isopropyl triisostearoyl titanate (KR-TTS) is found to be superior in performance and has a significant effect on the dispersion and resolving of agglomeration. This paper presents the effect of surface modification with the TCA of isopropyl triisostearoyl titanate (KR-TTS) type on the TiO2 nanotube material.

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“…Preparation for PS/PP/nano-TiO 2 composites. Firstly, according to the method of literature [5] , we prepared modified nano-TiO 2 . Secondly, we weighed a certain amount of PS and PP in a ratio of 7:3, and mixed them with nano-TiO 2 in high speed mixer.…”

Section: Methodsmentioning

confidence: 99%