ŞEKER PANCARI KÜSPESİ PARTİKÜLLERİ DOLGULU POLİPROPİLEN MATRİKS BİYOKOMPOZİTİN ÜRETİMİ VE KARAKTERİZASYONU

Öz

Bu çalışmada, şeker pancarı küspesi (SP) atıklarını azaltmak ve tarımsal atık malzemelerin çeşitli uygulamalardaki potansiyelini göstermek amacıyla polipropilen (PP) matrisli biyokompozitler geliştirilmiştir. Şeker üretim fabrikasından elde edilen şeker pancarı küspesi kurutma işlemine tabi tutulmuş ve ardından mekanik olarak öğütülmüştür. Bu işlemden sonra, elde edilen toz şeker pancarı posası parçacıkları elemeişlemine tabi tutuldu ve 100–250 μm boyut aralığında parçacıklar elde edildi. Bu parçacıklar daha sonra %5 ila %20 arasında değişen dolum seviyelerinde saf PP matrisine katıldı. Daha sonra, bu biyokompozitlerin mekanik (çekme, eğilme, DMA), termal (TGA, DSC) ve kimyasal (FTIR) özellikleri incelenmiştir. DMA sonuçları, dolgu içeriğinin artmasıyla depolama modülünde belirgin bir iyileşme olduğunu göstermiş ve şeker pancarı küspesi parçacıklarının sertleştirici etkisini desteklemiştir. DSC analizi, erime sıcaklığında minimum değişiklik, ancak daha yüksek dolgu oranlarında kristallik derecesinde hafif bir azalma olduğunu gösterdi. FTIR spektrumları, PP matrisinde lignoselülozik şeker pancarı posasından karakteristik fonksiyonel grupların varlığını doğruladı ve bu da başarılı bir birleştirme olduğunu gösterdi. PP matris biyokompozitlerdeki elastik modülün, şeker pancarı posası parçacıklarının miktarı arttıkça arttığı belirlendi. PP ve biyokompozitlerin termogravimetrik analiz (TGA) verileri karşılaştırıldığında, SP100 ve SP250 oranının artmasıyla maksimum bozunma sıcaklığında (Tmax) bir artış gözlemlenirken, bozunmanın başladığı sıcaklıkta (Ton) bir azalma gözlemlenmiştir. Bu biyokompozitler, otomotiv, ambalaj ve inşaat endüstrilerinde sürdürülebilir malzemeler olarak uygulama için umut verici bir potansiyel sergilemektedir.

Anahtar Kelimeler

• Biyokompozit
• Karakterizasyon
• Mekanik ve termal özellikler.
• Polipropilen (PP)
• Şeker pancarı posası atığı

MANUFACTURING AND CHARACTERIZATION OF SUGAR BEET PULP PARTICLES FILLED POLYPROPYLENE MATRIX BIOCOMPOSITE

Öz

In this study, Polypropylene (PP) matrix biocomposites were developed with the aim of reducing sugar beet pulp (SP) waste and demonstrating the potential of agricultural waste materials in various applications. Sugar beet pulp extracted from a sugar production factory was subjected to a drying process and then mechanically ground. Following this process, the resultant powdered sugar beet pulp particles were subjected to a sieving process, yielding particles within the size range of 100–250 μm. These particles were then incorporated into the pure PP matrix at filling levels ranging from 5% to 20%. Subsequently, the mechanical (tensile, flexural, DMA), thermal (TGA, DSC), and chemical (FTIR) properties of these biocomposites were investigated. DMA results indicated a notable improvement in storage modulus with increased filler content, supporting the stiffening effect of sugar beet pulp particles. DSC analysis showed minimal change in melting temperature, but a slight decrease in crystallinity degree with higher filler ratios. FTIR spectra confirmed the presence of characteristic functional groups from lignocellulosic sugar beet pulp within the PP matrix, indicating successful incorporation. It was determined that the elastic modulus in the PP matrix biocomposites increased as the amount of sugar beet pulp particles increased. When the thermogravimetric analysis (TGA) data of PP and biocomposites were compared, an increase in the maximum degradation temperature (Tmax) was observed as the SP100 and SP250 ratio increased, while a decrease in the temperature at which degradation began (Ton) was observed. These biocomposites demonstrate promising potential for application in the automotive, packaging, and construction industries as sustainable materials.

Anahtar Kelimeler

• Biocomposite
• Characterization
• Mechanic and thermal properties.
• Polypropylene (PP)
• Sugar beet pulp waste

Kaynakça

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