نتایج جستجو برای: siloxane

تعداد نتایج: 1194  

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
Brett M Silverman Kristen A Wieghaus Jeffrey Schwartz

A direct comparison of surface loading, interface shear strength, and interface hydrolytic stability was made between a phosphonate and two siloxane monolayers formed on the native oxide surface of Ti-6Al-4V. Surface loading for the phosphonate was ca. four times greater (on a nanomole/area basis) than for the siloxanes; mechanical strengths per surface-bound molecule were comparable, but the h...

Journal: :Chemical communications 2015
Soo Sang Chae Jin Young Oh Jee Ho Park Won Jin Choi Jeong Hwan Han Jeong-O Lee Hong Koo Baik Tae Il Lee

We introduce a siloxane chain-based hydrophobizer that exhibits superior thermal and chemical stability compared to the conventional hydrophobizing silane agent under conditions of over 300 °C and pH 2-13. To demonstrate the capability of the siloxane chain-based hydrophobizer to serve as a highly robust chemical surface modifier, we present two applications: the formation of fine metal nanopar...

2012
J. L. Keddie

In a novel application, infrared spectroscopic ellipsometry is used to provide clear evidence for the formation of a covalent bond at a polymer/polymer interface. Specifically, there is evidence for the formation of a Si-O-C bond resulting from a reaction between the silyl (SiH) group of a poly(hydrogen methyl siloxane) crosslinker used in poly(dimethyl siloxane) and the carboxylic acid group o...

Journal: :Small 2023

Branched Siloxane Brushes In article number 2301561, King Lun Yeung and co-workers develop a flexible hierarchically branched siloxane brushes by repeated grafting of on TiO2 nanorods. The facilitates water nucleation, while the structure promotes efficient droplet jumping. as-prepared surface displays significant improvement in harvesting at both high low humidity conditions, making it suitabl...

Journal: :The Journal of the Society of Chemical Industry, Japan 1962

Journal: :Physical chemistry chemical physics : PCCP 2010
Heiko Niedermeyer Mohd Azri Ab Rani Paul D Lickiss Jason P Hallett Tom Welton Andrew J P White Patricia A Hunt

In this paper we use ab initio theoretical methods in combination with experimental studies to investigate ion-pairs of the ionic liquid (IL) 1-methyl-3-pentamethyldisiloxymethylimidazolium chloride [(SiOSi)C(1)C(1)im]Cl, in order to deepen our understanding of the effects of functionalisation on an IL. In addition, we focus on the effect of the siloxy group on the viscosity. We establish that ...

2007
Philip Choi Peng-Fei Fu Jay Guo

Nanoimprint lithography (NIL) is a fabrication technology that offers high-throughput, ultrahigh resolution patterning at great cost savings compared to most competing next-generation radiative lithography methods. As a result of its rapid development in the past decade and its potential for sub-100 nm lithography, NIL has been listed by MIT’s Technology Review as one of ten emerging technologi...

Journal: :Journal of the American Chemical Society 2004
Yi-Yeol Lyu Seung Hwan Yi Jeong Kuk Shon Seok Chang Lyong Sun Pu Sang-Yun Lee Jae Eui Yie Kookheon Char Galen D Stucky Ji Man Kim

Noble Gemini surfactants containing a siloxane moiety have been designed and successfully synthesized in the present study and are utilized as structure-directing agents for mesoporous metal oxides such as zirconia, titania, and vanadia. The siloxane moiety is believed to play an important nano-propping role during the surfactant removal by direct calcination, yielding thermally stable mesoporo...

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