Synthesis, characterization, thermal properties and reactivity ratios of methacrylate copolymers including methoxy group

Öz

In this study, the monomer 2-(4-methoxyphenylamino)-2-oxoethyl methacrylate (MPAEMA) was synthesized from sodium methacrylate and 2-chloro-N-(4-methoxyphenyl) acetamide. The structure of monomer FT-IR, 1H-NMR and 13C-NMR was characterized by using spectroscopic techniques. The homopolymer and copolymers of MPAEMA with methyl methacrylate (MMA) were prepared by free radical polymerization method. The poly (MPAEMA) homopolymer and poly (MPAEMA-co-MMA) were characterized by FT-IR, 1 H-NMR and 13C-NMR spectroscopic techniques, gel permeation chromatographyGPC and TGA/DTA thermal analysis methods. The copolymers of MPAEMA monomer with MMA at different ratios were synthesized by 15% conversion in the same way and series were formed. Lowconversion copolymer compositions were determined by Elemental Analysis results and characterized by FT-IR and TGA thermal analysis. The monomer reactivity ratios for copolymer systems were calculated using the linear methods Fineman Ross, Kelen Tüdos and the nonlinear method RREVM, and all results were discussed. Table A. The monomer reactivity ratios for MPAEMA-co-MMA copolymer system Method rMPAEMA rMMA r1.r2 KT 0,521 1,183 0,616 FR 0,515 1,193 0,614 RREVM 0,510 1,188 0,606 r1: rMPAEMA ve r2: rMMAPurpose: The aim of the research is to synthesize and characterize a new monomer and copolymer, and to investigate its thermal properties. Also, the reactivity of the monomers in the copolymer synthesized in this work was also investigated. Theory and Methods: Synthesis and characterization of monomer, homopolymer and copolymer were carried out. The heat behavior of the polymers was investigated. The monomer reactivity ratios of the copolymers synthesized at low conversion were calculated by Elemental Analysis.
Results: Polydispersity of the homopolymer was found to be close to the individual. When TGA analyzes were performed to determine the thermal properties of the polymers, it was found that the thermal stability of the polymers increased with the addition of another acrylate derivative. The linear methods Kelen Tüdos and Fineman Ross and the nonlinear method were found to be r1.r2≈0,61 by the RREVM method. Conclusion: The monomers were successfully synthesized. As the amount of methyl methacrylate in the copolymers increases, the thermal stability of the copolymer also increases. It was observed that the synthesized copolymers exhibited the ideal copolymer behavior.  

Anahtar Kelimeler

• 2- (4- methoxyphenylamino)- 2-oxoethyl methacrylate
• characterization
• thermal properties
• monomer reactivity ratios

Metoksi grubu içeren metakrilat polimerlerin sentez, karakterizasyon, termal özellik ve reaktivite oranlarının incelenmesi

Öz

Bu çalışmada, 2-(4-metoksifenilamino)2-oksoetilmetakrilat (MPAEMA) monomeri, 2-klor-N-(4-metoksifenil)asetamit ile sodyummetakrilattan sentezlendi. Monomerin yapısı FT-IR, ¹H-NMR ve ¹³C-NMR spektroskopik teknikleri ile karakterize edildi. MPAEMA monomerinin homopolimeri ve metil metakrilat (MMA) ile kopolimerleri serbest radikalik polimerizasyon yöntemiyle hazırlandı. Poli(MPAEMA) homopolimeri ve Poli(MPAEMA-ko-MMA) kopolimeri; FT-IR, ¹H-NMR ve ¹³C-NMR spektroskopik teknikleri, TGA/DTA termal analiz yöntemleriyle ve homoolimer jel geçirgenlik kromatografisi (GPC) karakterize edildi. MPAEMA monomerinin MMA ile değişik oranlardaki kopolimerleri aynı yöntemle %15 dönüşümle sentezlenerek serileri oluşturuldu. Düşük dönüşümlü kopolimer bileşimleri Elementel Analiz sonuçlarına göre belirlendi ve karakterizasyonu FT-IR ve TGA termal analiz ile yapıldı. Kopolimer sistemleri için monomer reaktivite oranları Fineman Ross (FR), Kelen Tüdos (KT)  lineer metotları ve RREVM nonlineer metoduyla hesaplandı ve tüm sonuçlar tartışıldı.

Anahtar Kelimeler

• 2-(4-metoksifenilamino)2-oksometilakrilat (MPAEMA)
• Karakterizasyon
• Homopolimer
• Kopolimer
• Termal özellikler
• Monomer Reaktivite Oranı

Kaynakça

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