Journals / Gazi Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2001 / Cilt: 14 - Sayı: 2

4-Hidroksibenzoik asit ve 4-hidroksimetilbenzoik asit kopolimerinin sentezi

Synthesis of new polymers: Copolymerization of 4-hydroxybenzoic acid and 4-(Hydroxymethyl) benzoic acid

Pages
453–464
Publication Date
2022-10-18
DOI
—
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AI Summary & Key Takeaways

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

Thermogravimetric analysis measurements indicated that onset of the thermal degradation of samples were between 399°C and 433°C.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:A series of copolyesters of 4-hydroxybenzoic acid and 4-(hydroxymethyl)benzoic acid was prepared by the poly condensation process in bulk at temperatures up to 320°C.
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Key Findings & Data:The copolyesters were characterized by$^1H$-NMR and $^{13}C$-NMR spectra, solution viscosity, thermogravimetric analysis arid optical microscopy.
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Conclusion & Impact:Thermogravimetric analysis measurements indicated that onset of the thermal degradation of samples were between 399°C and 433°C.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

A series of copolyesters of 4-hydroxybenzoic acid and 4-(hydroxymethyl)benzoic acid was prepared by the poly condensation process in bulk at temperatures up to 320°C. The copolyesters were characterized by$^1H$-NMR and $^{13}C$-NMR spectra, solution viscosity, thermogravimetric analysis arid optical microscopy. Molecular weights were determined by Liquid Chromatography-Mass Spectroscopy. Birefringence was observable under the polarizing microscope up to temperatures of 350°C. Thermogravimetric analysis measurements indicated that onset of the thermal degradation of samples were between 399°C and 433°C.

Özet

4-Hidroksibenzoik asit ve 4-(hidroksimetil)benzoik asit monomerlerinden çıkılarak, kütle polimerleşmesi yöntemi ile 320°C'ye ulaşan yüksek yüksek sıcaklıklarda bir seri kopolimer sentezlendi. Sentezlenen kopolimerlerin yapıları $^1H$-NMR ve $^{13}C$-NMR spektroskopisi, viskozite, termogravimetrik analiz ve optik mikroskopi yöntemi ile aydınlatıldı.Polimerlerin molekül ağırlıkları sıvı kromatografısi-kütle spektroskopisi yöntemi ile belirlendi. Polimerlerin sıvı kristal özellikleri polarize mikroskop ile 350°C'ye kadar ısıtılarak incelendi. Termogravimetrik ölçümlerden polimerlerin termal bozunma sıcaklıklarının 399°C ile 433°C arasında olduğu belirlendi.

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Cite This Article

SARI, B., TALU, M., ÖZGÜN, H. B. (2022). 4-Hidroksibenzoik asit ve 4-hidroksimetilbenzoik asit kopolimerinin sentezi. Gazi Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 14 - Sayı: 2, 453–464. https://ajindex.com/articles/522366

References (1)

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