Synthesis, Characterization, Thermal Behavior, and Dielectric Properties of Methacrylate Polymers Containing Imine Bonding
Yükleniyor...
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Two diferent Schif bases, viz. 1-{4-[(5-bromo-2-hydroxybenzyliden)amino]phenyl}ethanone (5-Br-2HBAPE) and
1-{4-[(4-hydroxybenzylidene)amino]phenyl}ethanone (4-HBAPE), have been prepared by condensation of 5-bromosalicylaldehyde and 4-hydroxybenzaldehyde with 4-aminoacetophenone in ethanol at molar ratio of 1:1. Then, Schif base
methacrylate monomers, i.e., 2-(((4-acetylphenyl)imino)methyl)-4-bromophenylmethacrylate (APIMBPM) and 2-(((4-acetylphenyl)imino)methyl)phenylmethacrylate (APIMPM), were synthesized by reaction of each Schif base compound with
methacryloylchloride at 0°C to 5°C. Schif base methacrylate polymers poly(APIMBPM) and poly(APIMPM) were then
prepared by free-radical polymerization in tetrahydrofuran (THF) at 70°C using azobisisobutyronitrile (AIBN) as initiator.
The structure of 5-Br-2HBAPE, 4-HBAPE, APIMBPM, APIMPM, poly(APIMBPM), and poly(APIMPM) was confrmed by
Fourier-transform infrared (FT-IR) and 1
H and 13C nuclear magnetic resonance (NMR) spectroscopy. The thermal behavior
of poly(APIMBPM) and poly(APIMPM) was studied by diferential scanning calorimetry (DSC) and thermogravimetry
(TG). The glass-transition temperature (Tg) of poly(APIMBPM) and poly(APIMPM) was found to be 113°C and 108°C,
respectively. The residual amount of poly(APIMBPM) and poly(APIMPM) at 1000°C was found to be 45.60% and 26.35%,
respectively. Dielectric and conductivity measurements were carried out on the Schif base methacrylate polymers by
impedance analysis as a function of frequency. The conductivity of poly(APIMBPM) and poly(APIMPM) was found to be
1.30 × 10−9 S cm−1 and 2.14 × 10−9 S cm−1, respectively. Scanning electron microscopy (SEM) was used to investigate
the morphology of the Schif base methacrylate polymers, and their antimicrobial activity against bacteria and fungus was
determined by disk difusion method. Poly(APIMBPM) exhibited good antibacterial property against Klebsiella pneumonia.
Poly(APIMBPM) and poly(APIMPM) exhibited good antifungal action against Candida albicans. We thus describe the
synthesis of diferent Schif base methacrylate polymers and their thermal behavior, electrical properties, and antimicrobial
activities.
Açıklama
Anahtar Kelimeler
Free Radical Polymerization, Schif Base Polymer, Thermal Properties, Dielectric Features, Antibacterial Activity, Antifungal Activity
Kaynak
Journal of Electronic Materials
WoS Q Değeri
Q3
Scopus Q Değeri
Cilt
50
Sayı
9/Special Issue SI
Künye
Solmaz, A., Ilter, Z., & İsmet, Kaya (2021). Synthesis, Characterization, Thermal Behavior, and Dielectric Properties of Methacrylate Polymers Containing Imine Bonding. Journal of Electronic Materials, 50(9), 5348–5358. https://doi.org/10.1007/s11664-021-09063-8
