Effect of a fatty amine on processing and physical properties of SBR compounds filled with silane-silica particles

• Published in: Journal of applied polymer science Vol. 99; no. 6; pp. 3222 - 3229
• Main Authors: Valentín, J. L., Posadas, P., Marcos-Fernández, A., Ibarra, L., Rodríguez, A.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.03.2006; Wiley
• Subjects: Applied sciences; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Payne effect; physical properties; Polymer industry, paints, wood; rheological properties; Technology of polymers; TESPT; physical properties; SBR; TESPT; Mechanical properties; Organic silane; Dispersion reinforced material; Tensile property; Processability; Surfactant; Fatty amine; Experimental study; Silica; Property formulation relationship; Coupling agent; Vulcanization; Shear viscosity; Vulcanizate; Technological properties; Organic oligosulfide; Payne effect; Rheological properties
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.22951

The use of fatty amines, obtained from natural fatty acids, in rubber compounds to improve silica dispersion was evaluated. Fatty amines can interact with the free silanol groups of the bis(3‐triethoxysilyl‐propyl) tetrasulfide (TESPT) silane‐modified silica forming an amine‐modified silica complex, which reduces the hydrophilic nature of the silica surface, minimizing the silica–silica interactions, and reducing the formation of secondary structures of silica. The effect of the addition of different amines and/or polyethylenglycol to SBR compounds loaded with silane‐modified silica was evaluated. Finally, incorporation of fatty amines improved the processability and traction properties of rubber compounds loaded with modified silica. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99: 3222–3229, 2006