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Journals / Karaelmas Fen ve Mühendislik Dergisi / 2026 / Cilt: 16 Sayı: 1

Preparation and Characterization of Modified Graphene-Doped Multi-walled Carbon Nanotube/Polypropylene Nanocomposite Films

Modifiye Grafen Dop Edilmiş Çok Duvarlı Karbon Nanotüp Katkılı Polipropilen Nanokompozit Film Üretimi ve Karakterizasyonu

Zehra Üçtepe(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0009-0001-0138-1621
Betül Soytürk(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0009-0001-9251-6359
Seçil Çelik Erbaş(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0000-0001-6029-7190
Bahar Baştürk(MANİSA CELÂL BAYAR ÜNİVERSİTESİ)0000-0002-4027-1935
Pages
118–133
Publication Date
2026-04-21
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results demonstrate that incorporating 3-aminopropyltriethoxysilane (APTES)-modified GR-doped MWCNTs into polypropylene enhances the elastic modulus of the composite films relative to neat polypropylene.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, polypropylene films were developed by incorporating both unmodified and chemically modified (oxidized and subsequently silanized) 32 wt% graphene-doped multi-walled carbon nanotubes (GR-doped MWCNTs) at three loading levels.
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Key Findings & Data:The results demonstrate that incorporating 3-aminopropyltriethoxysilane (APTES)-modified GR-doped MWCNTs into polypropylene enhances the elastic modulus of the composite films relative to neat polypropylene.
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Conclusion & Impact:These improved properties make the produced composite films suitable for use in lightweight automotive interior components, packaging films, and electronic casing applications.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Grafen dop edilmiş karbonnanotüp · nanokompozit polimer film · silanizasyon

Abstract

In this study, polypropylene films were developed by incorporating both unmodified and chemically modified (oxidized and subsequently silanized) 32 wt% graphene-doped multi-walled carbon nanotubes (GR-doped MWCNTs) at three loading levels. In order to provide a homogeneous mixture of PP powder and the nanofiller, a non-traditional coagulation method was carried out. This method achieved the synergistic combination of modification-dispersion processes, which has not been conducted on GR-doped MWCNT-reinforced PP matrix composite before. The resulting blends were then hot-pressed under controlled temperature and pressure to produce nanocomposite films. The mechanical properties of modified and unmodified GR-doped MWCNT/polypropylene films were investigated via tensile testing. Subsequent thermal and morphological analyses were performed on the modified composites and neat polypropylene, since the elastic modulus of the modified films was generally higher than both neat polypropylene and unmodified GR-doped MWCNT-reinforced films. The fundamental thermal characteristics were determined by performing DSC (differential scanning calorimetry), TGA (thermogravimetric analysis), and DTA (differential thermal analysis) measurements. Both nanoparticle distribution and film surface morphology were evaluated via SEM (scanning electron microscopy). Based on thermal analysis, it was inferred that the presence of nanofiller did not exhibit any particular effects in terms of thermal characteristics (i.e., melting temperature or thermal degradation), which indicated that the PP sustained its thermal stability during the production stage. The results demonstrate that incorporating 3-aminopropyltriethoxysilane (APTES)-modified GR-doped MWCNTs into polypropylene enhances the elastic modulus of the composite films relative to neat polypropylene. These improved properties make the produced composite films suitable for use in lightweight automotive interior components, packaging films, and electronic casing applications.

Özet

Bu çalışmada, polipropilen filmler; modifiye edilmemiş ve kimyasal olarak modifiye edilmiş (oksidasyon ve ardından silanizasyon gerçekleştirilmiş) 32 wt% grafen katkılı çok duvarlı karbon nanotüplerin (GR-doped MWCNTs) üç farklı yükleme oranında polimere ilave edilmesiyle geliştirilmiştir. PP tozu ve nano dolgu maddesinin homojen karışımını sağlamak için konvansiyonel olmayan bir metot olarak bilinen koagülasyon tekniği kullanılmıştır. Bu yöntem, daha önce GR-doped MWCNT takviyeli PP matris kompozite hiç uygulanmamış olan modifikasyon-dispersiyon işlemlerinin sinerjik bir kombinasyonunu sağlamıştır. Elde edilen karışımlar, kontrollü sıcaklık ve basınç altında sıcak pres tekniği kullanılarak nanokompozit film formunda üretilmiştir. Modifiye edilmiş ve edilmemiş GR-doped MWCNT/polipropilen filmlerin mekanik özellikleri çekme testi ile incelenmiştir. Modifiye filmlerin elastik modül değerleri, hem saf polipropilen hem de modifiye edilmemiş GR-doped MWCNT ile takviye edilmiş filmlerden genel olarak daha yüksek bulunmuştur, bu nedenle sonraki termal ve morfolojik analizler yalnızca modifiye kompozitler ve saf polipropilen üzerinde gerçekleştirilmiştir. Temel termal özellikler, DSC (diferansiyel taramalı kalorimetri), TGA (termogravimetrik analiz) ve DTA (diferansiyel termal analiz) ölçümleri yapılarak belirlenmiştir. Hem nanopartikül dağılımı hem de film yüzeylerinin morfolojisi SEM (taramalı elektron mikroskobu) ile değerlendirilmiştir. Termal analize dayanarak, nano dolgu maddesinin varlığının termal özellikler (erime sıcaklığı veya termal bozunma) açısından herhangi bir özel etki göstermediği, bunun da PP’nin üretim aşamasında termal kararlılığını koruduğu sonucuna varılmıştır. Elde edilen sonuçlar, 3-aminopropiltrietoksisilan (APTES) ile modifiye edilmiş GR-katkılı MWCNT’lerin polipropilene doplanarak üretilen kompozit filmlerin saf polipropilene göre elastik modülünü artırdığını göstermektedir. Geliştirilen bu özellikler, elde edilen kompozit filmin hafif otomotiv iç bileşenlerinde, paketleme filmlerinde ve elektronik gövde elemanlarında kullanıma uygun hale gelmesini sağlamaktadır.

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Cite This Article

Üçtepe, Z., Soytürk, B., Erbaş, S. Ç., Baştürk, B. (2026). Preparation and Characterization of Modified Graphene-Doped Multi-walled Carbon Nanotube/Polypropylene Nanocomposite Films. Karaelmas Fen ve Mühendislik Dergisi, Cilt: 16 Sayı: 1, 118–133. https://doi.org/10.7212/karaelmasfen.1804200

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