The effect of a silane coupling agent on water adsorption at a metal/polymer interface studied by neutron reflectivity and angle-resolved X-ray photoelectron spectroscopy

1996 ◽  
Vol 31 (4) ◽  
pp. 927-937 ◽  
Author(s):  
M. S. Kent ◽  
G. S. Smith ◽  
S. M. Baker ◽  
A. Nyitray ◽  
J. Browning ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Photoelectron Spectroscopy ◽  
Silane Coupling Agent ◽  
Water Adsorption ◽  
Neutron Reflectivity ◽  
X Ray ◽  
Polymer Interface ◽  
Silane Coupling ◽  
Metal Polymer

scholarly journals X-Ray Photoelectron Spectroscopy Study of Silane Coupling Agents/Basalt Fiber Interface

2011 ◽  
Vol 236-238 ◽  
pp. 1467-1471 ◽  
Author(s):  
Ya Lan Liu ◽  
Shi Jie Shen ◽  
Li Zhang ◽  
Ling Min Shao
Keyword(s):  
Coupling Agent ◽  
Photoelectron Spectroscopy ◽  
Silane Coupling Agent ◽  
Basalt Fiber ◽  
Fiber Surface ◽  
Chemical Compositions ◽  
Hydroxyl Groups ◽  
Silane Coupling Agents ◽  
X Ray ◽  
Silane Coupling

In this paper, two types of fiber surface treatment methods, namely heat treatment and chemical coupling, were used to improve the basalt fiber surface properties. The basalt fiber surface was heated under 250Celsius degree for 30minites, and then was treated by silane coupling agent ethanol solution with different concentrations. X-ray photoelectron spectroscopy (XPS) was utilized to study the surface chemical compositions of basalt fiber after treatments. The XPS analysis indicated that chemical bonds between basalt fiber and KH-550 have occurred, and silanols were adsorbed to the surface of basalt fibers by an ether linkage between the silanols and the hydroxyl groups of the fibers. When the concentration of KH-550 is 0.8wt%, the optimal bonding condition is formed between basalt fiber and silane coupling agent.

scholarly journals Effects of Resin/Filler Adhesion on the Thermal and Electrical Conductivity of Polyimide Nanocomposites

2021 ◽  
Vol 5 (10) ◽  
pp. 272
Author(s):  
Yoshimichi Ohki ◽  
Naoshi Hirai
Keyword(s):  
Thermal Conductivity ◽  
Coupling Agent ◽  
Loss Factor ◽  
Silane Coupling Agent ◽  
Strong Influence ◽  
Positive Relationship ◽  
Polymer Interface ◽  
Silane Coupling ◽  
Coil Winding ◽  
Winding Insulation

With an aim to develop a good coil winding insulation film, fillers of boehmite alumina in the shape of a roughly rectangular plate were added with ratios of 10 and 20 wt% to polyimide. The filler surface was untreated or treated with a methacrylic or an epoxy silane coupling agent. Such prepared polyimide nanocomposites were subjected to various tests to measure the tensile strength, elastic modulus, complex permittivity, and thermal conductivity. It was found that samples with fillers treated using the methacrylic silane coupling agent have the strongest adhesion at the filler/polyimide interfaces and the lowest dielectric loss factor at high temperatures. A positive relationship between the filler/polyimide adhesion and the thermal conductivity is also indicated. These findings are significant since they indicate that the adhesion status at the filler/polymer interface exerts a strong influence on the thermal and electrical conduction processes in the polymer.

Mechano-Chemical Modification of Nanodiamond with GW

2008 ◽  
Vol 375-376 ◽  
pp. 87-91
Author(s):  
Yong Wei Zhu ◽  
Xiang Yang Xu ◽  
Bai Chun Wang ◽  
Jian Liang Shen
Keyword(s):  
Fourier Transform ◽  
Chemical Modification ◽  
Photoelectron Spectroscopy ◽  
Silane Coupling Agent ◽  
Xps Spectra ◽  
X Ray ◽  
Silane Coupling ◽  
Before And After ◽  
New Type ◽  
Ft Ir

Mechano-chemical modification (MCM) of nanodiamond was conducted with a stirring mill. A new type of silane coupling agent, GW was chosen as its modifier. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) were employed to study the surface properties of nanodiamond before and after treatments. Results showed that the peaks related to GW and the ball (for example, Fe, Si and Cl) appeared obviously after its MCM on their XPS spectra and mostly disappeared after its further purification with acid X or Y. A new peak located at 1382.48cm-1 was very strong after further purification. It was proven by their FT-IR spectra.

scholarly journals Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2254
Author(s):  
Adeleke A. Oyekanmi ◽  
N. I. Saharudin ◽  
Che Mohamad Hazwan ◽  
Abdul Khalil H. P. S. ◽  
Niyi G. Olaiya ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Cellulose Nanofibrils ◽  
Hydroxyl Groups ◽  
Water Contact ◽  
Silane Coupling ◽  
Cnf Films ◽  
Kenaf Bast ◽  
Thermal Stability Of

Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study, macroalgae were reinforced with cellulose nanofibrils (CNFs) isolated from kenaf bast fibres. The macroalgae CNF film was after that treated with silane for hydrophobicity enhancement. The wettability and functional properties of unmodified macroalgae CNF films were compared with silane-modified macroalgae CNF films. Characterisation of the unmodified and modified biopolymers films was investigated. The atomic force microscope (AFM), SEM morphology, tensile properties, water contact angle, and thermal behaviour of the biofilms showed that the incorporation of Kenaf bast CNF remarkably increased the strength, moisture resistance, and thermal stability of the macroalgae biopolymer films. Moreover, the films’ modification using a silane coupling agent further enhanced the strength and thermal stability of the films apart from improved water-resistance of the biopolymer films compared to unmodified films. The morphology and AFM showed good interfacial interaction of the components of the biopolymer films. The modified biopolymer films exhibited significantly improved hydrophobic properties compared to the unmodified films due to the enhanced dispersion resulting from the silane treatment. The improved biopolymer films can potentially be utilised as packaging materials.

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