Bis(Triethoxysilylethyltolylene)-Polysulfide, a Scorch-Resistant Silane Coupling Agent for Mineral-Filled Elastomers

1983 ◽  
Vol 56 (1) ◽  
pp. 94-104 ◽  
Author(s):  
R. J. Pickwell
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Coupling Agent ◽  
Calcium Silicate ◽  
Silane Coupling Agent ◽  
Weight Basis ◽  
Filled Elastomers ◽  
Silane Coupling

Abstract Bis(triethoxysilylethyltolylene)polysulfide offers greater scorch safety and reduced odor compared to mercaptosilanes, though its high molecular weight may require up to three times the mercaptosilane loading on a weight basis. This is highly dependent on the rubber formulation. The polysulfidedisilane can be made into stable dispersions on calcium silicate at concentrations up to 70 percent. Order-of-addition recommendations for the polysulfidedisilane are the same as those for mercaptosilanes. Different mix procedures should be checked for each formulation to ensure maximum silane effectiveness.

Preparation and Properties of the Polystyrene/Alumina Nanocomposites

2012 ◽  
Vol 557-559 ◽  
pp. 519-522
Author(s):  
Xu Man Wang ◽  
Cai Ning Zhang
Keyword(s):  
Molecular Weight ◽  
Thermal Resistance ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
In Situ Polymerization ◽  
Average Molecular Weight ◽  
Experimental Results ◽  
Solvent Resistance ◽  
Silane Coupling

Silane coupling agent KH-570 was applied to modify the surface capability of the alumina (Al2O3). The modified Al2O3were dispersed in styrene. The in-situ polymerization was used to prepare the polystyrene/alumina (PS/Al2O3) composites, in which azodiisobutyronitrile (AIBN) was used as initiator. FTIR, DSC and TG were applied to characterize the prepared composites. The solvent resistance, thermal resistance of the composites and the average molecular weight of PS in PS/Al2O3nanocomposites were studied. The experimental results demonstrated that the solvent resistance of PS/Al2O3nanocomposites was improved by the adding of Al2O3nanoparticles. The thermal resistance of the composites increased with the increasing of the Al2O3content. Meanwhile, the molecular weight of PS in the composites increased with the increasing of the Al2O3content.

Bonelike apatite formation on ethylene-vinyl alcohol copolymer modified with silane coupling agent and calcium silicate solutions

Biomaterials ◽  
2003 ◽  
Vol 24 (10) ◽  
pp. 1729-1735 ◽  
Author(s):  
Ayako Oyane ◽  
Masakazu Kawashita ◽  
Kazuki Nakanishi ◽  
Tadashi Kokubo ◽  
Masahiko Minoda ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Vinyl Alcohol ◽  
Calcium Silicate ◽  
Silane Coupling Agent ◽  
Apatite Formation ◽  
Ethylene Vinyl Alcohol ◽  
Ethylene Vinyl Alcohol Copolymer ◽  
Silane Coupling ◽  
Bonelike Apatite

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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