Journals / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 2017 / Cilt: 32 - Sayı: 2

Temperature controlled synthesis of polystyrene/clay nanocomposites and their characterizations

Sıcaklık kontrolü ile polistiren/kil nanokompozit sentezi ve karakterizasyonu

Pages
303–312
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

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

Shore D hardness measurement method was used in the evaluation of mechanical properties.According to the characterization of the study it was determined to be generally better than the properties of nanocomposites obtained by melt intercalation method.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Polymeric nanocomposites prepared with clay are of great importance in nanocomposites.
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Key Findings & Data:Experimentswere performed at constant 1000C and 1050C temperatures.
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Conclusion & Impact:Shore D hardness measurement method was used in the evaluation of mechanical properties.According to the characterization of the study it was determined to be generally better than the properties of nanocomposites obtained by melt intercalation method.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Polymeric nanocomposites prepared with clay are of great importance in nanocomposites. Belonging to thefamily of smectite clays, particularly bentonite and montmorillonite, with a regular layered structure iswidely used in preparing polymeric nanocomposites. In this experimental study, two different productionmethod and two different operating conditions were used to obtain polymeric nanocomposites. Productionmethods used in this study is the in situ polymerization method and melt intercalation method. Experimentswere performed at constant 1000C and 1050C temperatures. System temperature was kept constant with selftuning PID (STPID) controller. STPID control model and tuning parameters were determined by the genetic algorithm. After obtaining nanocomposites, firstly % monomer conversion and viscosity average molecularweights were calculated and then characterization studies were performed. Thermogravimetric Analysis(TGA) was used to determine thermal properties; Transmission Electron Microscopy (TEM) was used to determine surface characterization. Fourier transform Infrared Spectroscopy (FTIR) was used for structuralanalysis. Shore D hardness measurement method was used in the evaluation of mechanical properties.According to the characterization of the study it was determined to be generally better than the properties of nanocomposites obtained by melt intercalation method.

Özet

Nanokompozitler içinde kil ile hazırlanmış polimerik nanokompozitlerin önemi büyüktür. Smektit ailesineait killer, özellikle bentonit ve montmorillonit, düzenli tabakalı yapıları ile polimerik nanokompozitlerinhazırlamasında yaygın olarak kullanılmaktadır. Yapılan deneysel çalışmada, iki farklı üretim metodu ve ikifarklı işletim koşulu kullanılarak polimerik nanokompozitler üretilmiştir. Çalışmada kullanılan üretimyöntemleri eş zamanlı üretim metodu ve eriyikle harmanlama metodudur. Deneyler 1000C ve 1050C' de sabit sıcaklıkta gerçekleştirilmiştir. Sistemin bu sıcaklıkta kalması için kendinden ayarlamalı PID (STPID) kontrolyöntemi uygulanmıştır. STPID kontrol model ve ayar parametreleri ise genetik algoritma ile belirlenmiştir.Nanokompozitler elde edildikten sonra ilk olarak % monomer dönüşümleri ve viskozite ortalama molekülağırlıkları hesaplanmış, daha sonra karakterizasyon çalışmaları gerçekleştirilmiştir. Termal özelliklerin belirlenmesinde Temogravimetrik Analiz (TGA), yüzey karakterizasyonu için Geçirimli Elektron Mikroskobu (TEM), yapısal analiz için Fourier Dönüşümlü Kızılötesi Spektroskopisi (FTIR) kullanılmıştır.Mekanik özelliklerin değerlendirilmesinde Shore D sertlik ölçüm yöntemi kullanılmıştır. Karakterizasyon çalışmalarına göre, genel olarak eriyikle harmanlama metoduyla elde edilen nanokompozitlerinözelliklerinin daha iyi olduğu belirlenmiştir.

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Cite This Article

ALTINTEN, A., ORMAN, F. (2022). Temperature controlled synthesis of polystyrene/clay nanocomposites and their characterizations. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 32 - Sayı: 2, 303–312. https://ajindex.com/articles/523554

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