Synthesis of Phosphazene Containing Polymer Via ATRP Method and İnvestigation of Dielectric Properties

Yıl 2019, Cilt: 19 Sayı: 2, 307 - 316, 17.09.2019

Mehmet Fatih Coşkun , Tuba Baydemir Demet Coşkun

Öz

In this work,
2,2-bis [(4- (chloracetyloxy) imino) -2-methoxyphenoxy) -4,4,6,6-

bis [spiro (2 ', 2' '- dioxy-1', 1''-
biphenylyl) cyclotriphosphazene was synthesized and it was used as an initiator
in the polymerization reactions of methyl methacrylate and n-butyl methacrylate
monomers via ATRP method. The structure and the thermal behavior of synthesized
materials were analyzed by FT-IR, ¹H, ³¹P-NMR, DSC and
TGA techniques. The average molecular weights and heterogeneity indices were
measured by GPC instrument. Dielectric measurements of the synthesized polymers
such as dielectric constant, dispersion factor, at constant temperature in the
frequency range of 50 Hz to 2000 Hz were measured by the impedance analyzer
device.

Anahtar Kelimeler

Phosphazene, Dielectric Properties, Atom Transfer Radical Polymerization, Polymer

ATRP Metodu ile Fosfazen İçeren Polimer Sentezi ve Dielektrik Özelliklerinin İncelenmesi

Öz

Bu çalışmada önce, 4,4'-[dispiro[dibenzo[1,3,2]dioxaphosphepine-6,2'-[1,3,2,4,6]diazatriphosphinine-4',6''-dibenzo[1,3,2]dioxaphosphepine]-6',6'-diylbis(oxy)]bis(3-methoxybenzaldehyde)bis[O-(chloro acetyl) oxime] sentezi gerçekleştirildi. Sentezlenen fosfazen türevi,
metil metakrilat ve n-bütil metakrilat monomerlerinin ATRP metoduyla
polimerleşme reaksiyonlarında başlatıcı olarak kullanıldı. Sentezlenen
maddelerin yapı karakterizasyonunda FT-IR, ¹H ve ³¹P-NMR
kullanıldı. Termal davranışları TGA-DSC yardımıyla belirlendi. Polimerlerin molekül
ağırlığı (Mn) ve heterojen indisleri (HI) GPC aleti ile ölçüldü. Sentezi
yapılan polimerlerin dielektrik ölçümleri, impedans analizör cihazıyla,
dielektrik sabiti, dağıtma faktörü gibi dielektrik davranışları ölçülmüştür.

Anahtar Kelimeler

Fosfazen; Dielektrik Özellikler; Atom Transfer Radikal Polimerizasyonu; Polimer

Kaynakça

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