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In situ and ex situ synthesis of poly（vinyl alcohol）-Fe304 nanocomposite flame retardants 被引量：1

In situ and ex situ synthesis of poly（vinyl alcohol）-Fe304 nanocomposite flame retardants
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摘要 Application of flame retardants is limited because of environmental requirements. This work introduces conventional magnetic nanoparticles as a new class of nontoxic and effective flame retardant. Fe3O4 enhanced both the thermal stability and flame retardant properties of a poly（vinyl alcohol） matrix. Nanoparticles were synthesized via a simple precipitation reaction without using an inert atmosphere at room temperature. The effects of different precursors and acrylamide on the morphology of the products were investigated. Nanoparticles exhibited a ferrimagnetic behavior at room temperature. To prepare the magnetic nanocomposite, Fe3O4 nanoparticles were added to the poly（vinyl alcohol）. In the presence of a flame, the magnetic nanoparticles remained together, showed resistance to dripping and protected the polymer matrix. Dispersed nanoparticles play a role of a magnetic barrier layer, which slows product volatilization and prevents flames and oxygen from reaching the sample during decomposition of the polymer. Application of flame retardants is limited because of environmental requirements. This work introduces conventional magnetic nanoparticles as a new class of nontoxic and effective flame retardant. Fe3O4 enhanced both the thermal stability and flame retardant properties of a poly（vinyl alcohol） matrix. Nanoparticles were synthesized via a simple precipitation reaction without using an inert atmosphere at room temperature. The effects of different precursors and acrylamide on the morphology of the products were investigated. Nanoparticles exhibited a ferrimagnetic behavior at room temperature. To prepare the magnetic nanocomposite, Fe3O4 nanoparticles were added to the poly（vinyl alcohol）. In the presence of a flame, the magnetic nanoparticles remained together, showed resistance to dripping and protected the polymer matrix. Dispersed nanoparticles play a role of a magnetic barrier layer, which slows product volatilization and prevents flames and oxygen from reaching the sample during decomposition of the polymer.
作者 Davood Ghanbari Masoud Salavati-Niasari Majid Ghasemi-Kooch
机构地区 Young Researchers and Elite Club Institute oF Nano Science and Nano Technology
出处 《Particuology》 SCIE EI CAS CSCD 2016年第3期87-94,共8页 颗粒学报（英文版）
关键词 Nanocomposite Polymer Magnetite Precipitation Thermal stability Flame retardancy Nanocomposite Polymer Magnetite Precipitation Thermal stability Flame retardancy
分类号 TQ314.248 [化学工程—高聚物工业] Q523 [生物学—生物化学]
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Particuology
2016年 第3期

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