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Fotokromik özellikli PVA nanokompozit yüzey üretimi ve karakterizasyonu: Molekül ağırlığın etkisinin incelenmesi

Hayriye Hale Aygün(Kahramammaraş Sütçü İmam Üniversitesi)0000-0002-2812-8079
Sayfa
627–638
Yayın Tarihi
2024-08-16
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

Polimer molekül ağırlığı arttıkça ortalama nanolif çapının ve nanokompozit yüzey kalınlığının arttığı, gözenek boyut varyasyonu yüksek ve daha geniş gözenekli elektrospun yüzeylerin üretildiği tespit edilmiştir.

📌 3 Maddede Bu Makale

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Amaç & Hipotez:Bu çalışmada polimer molekül ağırlığının, elektrospun yüzeyin morfolojik ve fotokromik özellikleri üzerindeki etkileri incelenmiştir.
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Temel Bulgular & Veri:Bu amaçla hidroliz dereceleri eş değer ancak molekül ağırlıkları farklı olan polivinil alkol (PVA) polimerleri kullanılarak polimer konsantrasyonu %12 olan polimer çözeltileri hazırlanmış ve bu çözeltilere %4 fotokromik madde ilavesi sonrasında elektrospinning işlemi gerçekleştirilmiştir.
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Sonuç & Katkı:Polimer molekül ağırlığı arttıkça ortalama nanolif çapının ve nanokompozit yüzey kalınlığının arttığı, gözenek boyut varyasyonu yüksek ve daha geniş gözenekli elektrospun yüzeylerin üretildiği tespit edilmiştir.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Elektrospinning · fotokromizm · molecular weight

Özet

Bu çalışmada polimer molekül ağırlığının, elektrospun yüzeyin morfolojik ve fotokromik özellikleri üzerindeki etkileri incelenmiştir. Bu amaçla hidroliz dereceleri eş değer ancak molekül ağırlıkları farklı olan polivinil alkol (PVA) polimerleri kullanılarak polimer konsantrasyonu %12 olan polimer çözeltileri hazırlanmış ve bu çözeltilere %4 fotokromik madde ilavesi sonrasında elektrospinning işlemi gerçekleştirilmiştir. Fotokromik madde ilaveli çözeltilerin yoğunlukları ölçülmüş ve UV-Vis spektrofotometrik analizleri gerçekleştirilmiştir. Bu çözeltilerden üretilen elektrospun nanokompozit yüzeylerin yapısal, morfolojik ve UV-Vis karakterizasyonları FTIR, FESEM ve UV-Vis spektrofotometre analizlerinden faydalanılarak incelenmiş ve yüzeylerin kalınlıkları ölçülmüştür. Polimer molekül ağırlığı arttıkça ortalama nanolif çapının ve nanokompozit yüzey kalınlığının arttığı, gözenek boyut varyasyonu yüksek ve daha geniş gözenekli elektrospun yüzeylerin üretildiği tespit edilmiştir. Düşük polimer molekül ağırlığına sahip PVA 5-88 numunesinde, düşük vizkosite değerinden dolayı yüzey düzgünsüzlüğünün bozulduğu ve en ince nanolif üretimin bu numune ile elde edildiği gözlenmiştir. Çalışılan numuneler arasında orta molekül ağrılığa sahip olan PVA 14-88 numunesinin ise çözelti yoğunluğu, üretilen ortalama nanolif çapı değeri, lif çapı/gözenek boyutu ilişkisi ve fotokromik etki açısından elektrospinning işlemi için en uygun molekül ağırlığa sahip PVA polimer tipi olduğu görülmektedir.

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Bu Makaleye Atıf Yap

Aygün, H. H. (2024). Fotokromik özellikli PVA nanokompozit yüzey üretimi ve karakterizasyonu: Molekül ağırlığın etkisinin incelenmesi. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 40 Sayı: 1, 627–638. https://doi.org/10.17341/gazimmfd.1385994

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