(2-fenil-1,3-dioksalan-4-iL-) metilmetakrilat-glisidil metakrilat kopolimerinin sentezi, karakterizasyonu ve reaktivite oranlarının hesaplanması

Synthesis and characterization of (2-phenyl-1,3-dioxolane-4-YL-) methylmethacrylate-glycidyl methacrylate copolymers and determination of monomer reactivity ratios

Özet

Bu çalışmada (2-fenil-l,3-dioksalan-4-il-) metil metakrilat (PDMMA) monomeri benzaldehit ve glisidil metakrilatin BF3O(Et)2 katalizörü yanında kondensasyon reaksiyonu ile elde edildi. Monomerin yapısı IR, $^{1}H-NMR$ ve $^{13}C-NMR$ spektrumlarıyla aydınlatıldı. (2-fenil-l,3-dioksalan-4-il) metil metakrilat (PDMMA) ve glisidil metakrilat monomerleri farklı oranlarda 60°C benzoilperoksit başlatıcısı ile dioksan çözücüsünde kopolimerleştirildi. Kopolimerin yapısı IR, $^{1}H-NMR$ ve $^{13}C-NMR$ spektrumlarıyla aydınlatıldı. Kopolimerlerin camsı geçiş sıcaklıkları DSC den bulundu. Kopolimerdeki monomerlerin reaktivite oranları Kelen-Tudos metoduyla $^{r}DMMA$ = 0.43 ± 0.027 ve $^{r}GMA$ = 1 -97 ± 0.041 olarak bulundu.

Abstract

In this work, (2-Phenyl-l,3-Dioxolane-4-yl-) methyl methacrylate (PDMMA) was synthesized in high yield by addition reaction of glycidyl methacrylate (GMA) with benzaldhyde in the presence of $BF_3O (C_2H_5)_2$ as catalyst.The structure of monomer was determined by IR, $^{1}H-NMR$, $^{13}C-NMR$, techniques. Copolymers with various contents of (2-Phenyl-l,3-Dioxolane-4-yl-) methyl methacrylate and glycidyl metacryiate were prepared in dioxane solution using benzoylperoxide as initiator at 60°C. The structure of copolymer was determined by IR, $^{1}H-NMR$ , $^{13}C-NMR$, techniques. Glass transition temperatures of the copolymers were determined by differential scanning calorimetry. The reactivity ratios of DMMA and GMA in the copolymerization were found to be $^{r}DMMA$ = 0.43 ± 0.027 and $^{r}GMA$ = 1-97 ± 0.041 by Kelen-Tudos method .