Preparation of porous and non-porous poly iso-butyl methacrylate microspheres by suspension polymerization

Abstract

Porous and non-porous Poly isobutyl methacrylate PiBMA microspheres were synthesized by suspension polymerization technique in aqueous medium to remove light petroleum derivatives from sea water. Influ- ence of the crosslinking agent, porogen and reaction parameters on the solvent uptake, porosity and networks structure of the PiBMA spheres were investigated. Gasoline and small aliphatic hydrocarbons pentane, he- xane and heptane were used as model solvents. Swelling behavior and network properties were found to be dependent on the crosslinking density of the sphere, crosslinking agent, porosity and solvent. Highest solvent uptake for both porous and non-porous PiBMA spheres was observed in gasoline. PiBMA microsphere shown to be good candidates for the removal of light petroleum derivatives and they preserved their uptake capacity and shape over several usages.

Keywords

• Microspheres,gamma radiation,poly isobutyl methacrylate,suspension polymerization

Suspensiyon polimerizasyonu ile gözenekli ve gözeneksiz poli iso-bütil metakrilat mikrokürelerinin hazırlanması

Abstract

D eniz suyundan hafif petrol türevlerinin uzaklaştırılması amacıyla suspensiyon polimerizasyonu tekniği ile sulu ortamda gözenekli ve gözeneksiz poli izo-butilmetakrilat PiBMA , mikro küreleri hazırlanmıştır. Çapraz bağlayıcı, gözenek yapıcı ve reaksiyon parametrelerinin, mikro kürelerin sıvı tutma kabiliyetlerine, gözenek yapısına ve ağ yapısına olan etkileri incelenmiştir. Benzin ve küçük hidrokarbonlar pentan, hekzan ve heptan model çözücüler olarak kullanılmıştır. Mikrokürelerin çözücü içinde şişme davranışı ve ağ yapı özellikleri, çapraz bağlanma yoğunluğuna, çapraz bağlayıcı türüne, gözenek yapısına ve çözücü türüne bağlı olduğu tespit edilmiştir. Hem gözenekli hem gözeneksiz kürelerde en yüksek sıvı tutma kapasitesi benzinde gözlenmiştir. Genel olarak PiBMA mikroküreleri deniz suyundan hafif petrol türevlerinin uzaklaştırılmasında etkili oldukları ve birden fazla kullanım sırasında hem kapasitelerini hem de şekillerini yitirmedikleri gözlenmiştir

Keywords

• Mikrokureler,gamma radyasyonu,poli izo-butil metakrilat,suspensiyon polimerizasyonu

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