Hydrophobically Modified Silica-Coated Gold Nanorods for Generating Nonlinear Photoacoustic Signals

2021 ◽  
Author(s):  
Evan N. Mueller ◽  
Maju Kuriakose ◽  
Saheli Ganguly ◽  
Ke Ma ◽  
Marco A. Inzunza-Ibarra ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Modified Silica ◽  
Hydrophobically Modified

Hydrophobically-modified silica aerogels: Novel food-contact surfaces with bacterial anti-adhesion properties

Food Control ◽  
2015 ◽  
Vol 52 ◽  
pp. 132-141 ◽  
Author(s):  
Jun Kyun Oh ◽  
Keila Perez ◽  
Nandita Kohli ◽  
Veli Kara ◽  
Jingyu Li ◽  
...  
Keyword(s):  
Silica Aerogels ◽  
Modified Silica ◽  
Adhesion Properties ◽  
Novel Food ◽  
Food Contact ◽  
Hydrophobically Modified ◽  
Food Contact Surfaces ◽  
Contact Surfaces

Activators Regenerated by Electron Transfer for Atom Transfer Radical Polymerization of Styrene in the Presence of Hydrophobically Modified Silica Aerogel Nanoparticles

2016 ◽  
Vol 230 (1) ◽  
Author(s):  
Khezrollah Khezri ◽  
Hassan Alijani ◽  
Yousef Fazli
Keyword(s):  
Electron Transfer ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Silica Aerogel ◽  
Atom Transfer ◽  
Modified Silica ◽  
Hydrophobically Modified

AbstractPristine hydrophilic silica aerogel nanoparticles surface was functionalized with hexamethyldisilazane (HMDS). Then, the resultant modified nanoparticles were used for

scholarly journals Adsorption performance of hydrophobically modified silica gel for the vapors of n-hexane and water

2017 ◽  
Vol 36 (3-4) ◽  
pp. 888-903 ◽  
Author(s):  
Weiqiu Huang ◽  
Jixing Xu ◽  
Bo Tang ◽  
Hongning Wang ◽  
Xiaobin Tan ◽  
...  
Keyword(s):  
Silica Gel ◽  
Orthogonal Experiment ◽  
Raw Material ◽  
Good Effect ◽  
Modified Silica ◽  
Modified Silica Gel ◽  
Microwave Exposure ◽  
Hexane Vapor ◽  
Hydrophobically Modified ◽  
The Difference

An ordinary silica gel (SG-1) was chosen as the raw material and hydrophobically modified with trimethylchlorosilane under different microwave exposure. The orthogonal experiment was designed to screen the optimized modification method. The hydrophobic properties modified silica gel (SG-2) was analyzed by comparing the difference changes of surface chemistries. Then, the adsorption capacities of SG-1 and SG-2 to the n-hexane vapor and water vapor, respectively, were investigated and compared with the capacities of activated carbon and SG-3 (hydrophobically modified using the same composite modifier without microwave exposure). Meanwhile, there cyclable adsorptions of SG-2 to the two vapors were conducted while the desorptions of vacuum and heat was observed. The results showed that the effect of hydrophobic modification to SG-1 under microwave exposure was obvious and SG-2 also had a very good effect of adsorption for the n-hexane vapor. The modified silica gel shows great potential and effect for the recovery of volatile organic compounds with high content of water.

Gemini Surfactant Binding onto Hydrophobically Modified Silica Nanoparticles

2008 ◽  
Vol 112 (32) ◽  
pp. 12142-12148 ◽  
Author(s):  
Patrizia Andreozzi ◽  
Ramon Pons ◽  
Lourdes Pérez ◽  
Maria Rosa Infante ◽  
Rita Muzzalupo ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Gemini Surfactant ◽  
Modified Silica ◽  
Hydrophobically Modified ◽  
Modified Silica Nanoparticles

Influence of Polymer Charge, Temperature, and Surfactants on Surface Sizing of Liner and Greaseproof Paper With Hydrophobically Modified Starch

TAPPI Journal ◽  
2009 ◽  
Vol 8 (2) ◽  
pp. 33-38 ◽  
Author(s):  
ANNA JONHED ◽  
LARS JÄRNSTRÖM
Keyword(s):  
Phase Separation ◽  
Contact Angles ◽  
Low Ph ◽  
Hydrophobically Modified ◽  
Paper Sizing ◽  
Surface Sizing ◽  
Separation Temperature ◽  
Hydrophobic Nature ◽  
Sizing Agents ◽  
Charge Temperature

The aim of this study was to investigate the properties of hydrophobically modified (HM) quaterna-ry ammonium starch ethers for paper sizing. These starches possess temperature-responsive properties; that is, gelation or phase separation occurs at a certain temperature upon cooling. This insolubility of the HM starches in water at room temperature improved their performance as sizing agents. The contact angles for water on sized liner were substantially larger than on unsized liner. When the application temperature was well above the critical phase-separation temperature, larger contact angles were obtained for liner independently of pH compared with those at the lower application temperature. Cobb60 values for liner decreased upon surface sizing, with a low pH and high application temperature giving lower water penetration. Contact angles on greaseproof paper decreased upon sur-face sizing as compared to unsized greaseproof paper, independently of pH and temperature. Greaseproof paper showed no great difference between unsized substrates and substrates sized with HM starch at different pH. This is probably due to the already hydrophobic nature of greaseproof paper. However, the Cobb60 values increased at low pH and low application temperature. Surfactants were added to investigate how they affect the sized surface. Addition of surfactant reduces the contact angles, in spite of indications of complex formation.

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