Alkali muameleli kupula lifi katkılı yüksek yoğunluklu polietilen kompozitlerin teknolojik özellikleri

Bu çalışma ile kestane kupula lifi katkılı termoplastik kompozitlerin mekanik, fiziksel ve termalözellikleri belirlenmiştir. Kupula lifi belirli oranlarda (%30, %40 ve %50) ilave edilerek polietilenkompozitleri üretilmiştir. Uyumsuzluk giderici ajan olarak maleik anhidritle graft edilmiş polietilen %3oranında katılmıştır. Kompozitlerin teknolojik özelliklerini geliştirmek amacıyla ayrıca kupula lifleri %5sodyum hidroksit (NaOH) ile 24 saat boyunca muamele edilmiştir. Elde edilen sonuçlar incelendiğinde,alkali muameleli kupula lifi katkılı kompozitlerde muamele edilmemiş kompozitlere göre daha iyimekanik özellikler elde edilmiştir. Alkali ile muamele edilmiş kupula lif kompozitlerin su alma vekalınlık artışı değerleri alkali muamelesiz kompozitlere göre kıyaslandığında özellikle %50 alkalimuameleli kupula lifi katkılı kompozit örneklerinde artmıştır.

The technological properties of the high density polyethylene composites filled with alkali treated cupula fiber

In this study, thermoplastic composites reinforced with cupula fiber were determined their mechanical, physical and thermal properties. The polyethylene composites made with various percentages (30, 40, and 50 wt.%) of cupula fibers were produced. The polyethylene graft maleic anyhydride as a couple agent with loading (3%) of composite was used. However, alkali treatment was applied to the cupula fibers as 5% by weight sodium hydroxide (NaOH) during 24 hours in order to improve technological properties of the composites. Based on the finding results, the composites with alkali treatment of the cupula fibers was provided better mechanical properties compared to untreated fiber reinforced composites. The values of the water absorption and thickness swelling of the composites reinforced with alkali treated the cupula fibers, especially in the composite with alkali treated at 50% cupula fiber, were increased compared to untreated fiber reinforced composites.

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