Synthesis & chemical and dielectric characterization of poly (linoleic acid)-g-poly (dimethylaminoethyl methacrylate): A novel high-kappa graft copolymer
Yükleniyor...
Dosyalar
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, poly (linoleic acid)-g-poly (dimethylaminoethyl methacrylate) (PLina-g-PDMA; PLDMA) graft copolymer was obtained from polymeric linoleic acid peroxide (PLina) possessing peroxide groups in the main chain by free radical polymerization of 2-dimethylaminoethyl methacrylate (DMA). Synthesized graft polymer, i.e. PLDMA, was first characterized chemically through proton nuclear magnetic resonance (H-1 NMR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA) and differential thermal analysis (DTA) and elemental analysis (EA) techniques. Later, PLDMA was injected into ITO coated glass cell and its electrical and dielectric measurements were carried at room temperature between 3 Hz and 3 MHz. PLDMA revealed dielectric constant (epsilon') values on the order of 10(3) below 1 kHz. Therefore, having such high dielectric constant value, PLDMA was proposed as high-kappa dielectric material with epsilon' = 6141 at 3 Hz. Dielectric relaxation of the polymer was characterized using Cole-Cole plots. Investigation of electrical conductivity of PLDMA yielded dc conductivity as 36774 S/cm. Moreover, PLDMA was further dispersed with CdTe quantum dots to explore its utility for hybrid composites and effects of quantum dot dispersal on electrical and dielectric parameters were also investigated. (C) 2017 Elsevier Ltd. All rights reserved.
Açıklama
YILDIRIM, Mert/0000-0002-8526-1802
WOS: 000401676600006
WOS: 000401676600006
Anahtar Kelimeler
Graft copolymers, High-kappa organics, Dielectric properties, Electrical characteristics
Kaynak
Composites Part B-Engineering
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
117
