Development and characterization of Ethylene Propylene Diene Monomer (EPDM) rubber reinforced by green material lignin

Öz

Effects of lignin on the rheological, mechanical, chemical and aging properties of ethylene propylene diene monomer (EPDM) rubber used in the production of sealing profiles were investigated. It is reinforced with carbon black to provide the necessary conditions in all automotive vehicles. However, all automotive manufacturers have started to research biodegradable materials instead of petroleum-based products in vehicles due to environmental problems and human health threats. Therefore, the possibility of using lignin instead of carbon black was investigated. EPDM plate samples were prepared by adding different amounts of commercial lignin, lignin black solution and maleic anhydride modified forms. The effects of lignin as a filler were analyzed rheologically, mechanically and chemically. Also surfaces were checked by scanning electron microscope after ageing. Commercial lignin made EPDM more resistant to ultraviolet and weathering, while unmodified black solution made it less resistant than carbon black. Adding commercial lignin and its modified form instead of carbon black provided the best mechanical properties. Additionally, it was determined that the addition of lignin as a filler did not cause any chemical degradation in the EPDM matrix.

Anahtar Kelimeler

• Lignin
• EPDM
• Green Materials
• Biodegradable fillers

Yeşil malzeme lignin ile güçlendirilmiş Etilen Propilen Dien Monomer (EPDM) kauçuğunun geliştirilmesi ve karakterizasyonu

Öz

Sızdırmazlık profilleri üretiminde kullanılan etilen propilen dien monomer (EPDM) kauçuğunun reolojik, mekanik, kimyasal ve yaşlanma özellikleri üzerine ligninin etkileri incelenmiştir. Tüm otomotiv araçlarında gerekli koşulları sağlamak için karbon siyahı ile takviye edilmektedir. Ancak tüm otomotiv üreticileri çevresel sorunlar ve insan sağlığı tehditleri nedeniyle araçlarda petrol bazlı ürünler yerine biyolojik olarak parçalanabilen malzemeler araştırmaya başlamıştır. Bu nedenle karbon siyahı yerine lignin kullanma olasılığı araştırılmıştır. Ticari lignin, ligninin siyah çözeltisi ve maleik anhidrit ile modifiye edilmiş formlarının farklı miktarlarda eklenmesiyle EPDM plaka numuneleri hazırlanmıştır. Ligninin dolgu maddesi olarak etkileri reolojik, mekanik ve kimyasal olarak analiz edilmiştir. Ayrıca yaşlandırıldıktan sonra yüzeyler taramalı elektron mikroskobu ile kontrol edilmiştir. Ticari lignin, EPDM'yi ultraviyole ve hava koşullarına karşı daha dirençli hale getirirken, modifikasyonsuz siyah çözelti, onu karbon siyahından daha az dirençli hale getirmiştir. Karbon siyahı yerine ticari ligninin ve modifiye edilmiş formunun eklenmesi en iyi mekanik özellikleri sağlamıştır. Ayrıca dolgu maddesi olarak lignin ilavesinin EPDM matrisinde herhangi bir kimyasal bozunmaya neden olmadığı belirlenmiştir.

Anahtar Kelimeler

• Lignin
• EPDM
• Yeşil malzemeler
• Bozunabilir dolgu malzemeleri

Kaynakça

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