Morphology and properties of high performance rubber blends nano-composites using a New generation reinforcing nano-fillers / Ahmed Mahros Abdelmageed Kandil ; Supervised Mamdouh A. Abdelrahim , Mohamed M. Ismail

Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physical Chemistry

This study is of environmental and economic importance by putting a reference key of optimizing the use of lignocelluloses, biological waste and scrap rubber as replace of conventional fillers in rubber blend compatibilized through new nanotechnology process, in addition to metal powder incorporated rubber for specific technology assessment. Binary blend of acrylonitrile butadiene rubber (NBR) and natural rubber (NR) was compatibilized using montmorillonite organically modified by cetyltriemethylammoniumbromide (CTAB) through cation exchange technique followed by grafting with 3-aminopropyltriethoxysilane (APT) which resulted in intercalated/exfoliated structures with polymer chains and leaded to strong nanocomposite with high tensile properties and good resistance to flex fatigue, abrasion and compression set. Optimizing the use of the new biomass fillers, metal powders and scrap rubber filled NR/NBR composites was done through different compatibilization techniques which brought out the required homogenization and strength of rubber composites. Compatibilization techniques used throughout this study included surface modification of lignocellulosic fibers of rice husk, wood flour and sugarcane bagasse powders using different surface modifiers like cetyltriemethylammoniumbromide (CTAB), polyoxyethylene sorbitan monooleate (alk Tween 80), bis [3-(triethoxysily1) propyl] tetrasulphide (Si-69) and acid hydrolysis using octadecylamine (ODA) which enhanced the compatibility of biomass fibers filled rubber composites and resulted in a strong biocomposites

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