scholarly journals Study on the graft modification mechanism of macroporous silica gel surface based on silane coupling agent vinyl triethoxysilane

RSC Advances ◽  
2021 ◽  
Vol 11 (41) ◽  
pp. 25158-25169
Author(s):  
Zheng Wang ◽  
Mei-chen Liu ◽  
Zhi-yuan Chang ◽  
Hui-bo Li
Keyword(s):  
Silica Gel ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Porous Silica ◽  
Alkylation Reaction ◽  
Macroporous Silica ◽  
Silane Coupling ◽  
Graft Modification ◽  
Porous Silica Gel ◽  
Vinyl Triethoxysilane

Study on the mechanism of the alkylation reaction on the surface of porous silica gel.

The role of a silane coupling agent in the synthesis of hybrid polypyrrole–silica gel conducting particles

1998 ◽  
Vol 8 (10) ◽  
pp. 2185-2193 ◽  
Author(s):  
Christian Perruchot ◽  
Mohamed M. Chehimi ◽  
Delphine Mordenti ◽  
Michel Bri, ◽  
Michel Delamar
Keyword(s):  
Silica Gel ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Silane Coupling

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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