Abstract Poly[Ɛ-CL-b-(MMA-comb-EMA)]comb-type polymers were synthesized by ATRP and Ɛ-caprolactone macroinitiator and macromonomer. Methyl methacrylate macromonomer was synthesized from acylation reaction of methacryloyl chloride with PMMA ended 7-hydroxy coumarin. The macroinitiator was prepared from the reaction of chlorine acetyl chloride P(Ɛ-CL). The synthesized polymers were characterized by FT-IR, 1H-NMR and 13C-NMR techniques. The average molecular weight and molecular weight distribution of polymers were measured by GPC method. Thermal properties of samples were studied by DSC/TGA techniques. Dielectric and Ac conductivity measurements were performed. Dielectric constant (ɛˈ), dielectric loss factor (ɛˈˈ) and conductivity behaviors of comb-type polymer were measured at room temperature between the frequency of 100–2000 Hz and over the temperature range 303–413 K at 1 kHz reported as compared with each other. Besides, their effects on the electrical properties by doping with EuCl3 for some of the comb copolymers were and were investigated. The activation energy (Ea) was calculated from conductivity. We reported it was determined that the (ɛˈ) and (ɛˈˈ) values decreased with increasing frequency. There are also many application areas for comb polymers for example; nanotechnology, medicine. The aim of this study is to synthesize comb-type copolymers in different compositions and to investigate their electrical properties.

中文翻译：

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通过接枝法合成梳型嵌段共聚物：电性能和通过电导率测定活化能

摘要 以ATRP和Ɛ-己内酯大分子引发剂和大分子单体为原料合成了Poly[Ɛ-CL-b-(MMA-comb-EMA)]梳状聚合物。甲基丙烯酸甲酯大单体由甲基丙烯酰氯与PMMA封端的7-羟基香豆素酰化反应合成。大分子引发剂由氯乙酰氯 P(Ɛ-CL) 反应制备。合成的聚合物通过 FT-IR、1H-NMR 和 13C-NMR 技术进行表征。聚合物的平均分子量和分子量分布采用GPC法测定。通过DSC/TGA技术研究样品的热性能。进行了介电和交流电导率测量。介电常数 (ɛˈ), 在室温下在 100-2000 Hz 的频率和 303-413 K 在 1 kHz 的温度范围内测量了梳状聚合物的介电损耗因子（ɛˈ）和电导行为，并相互比较。此外，还研究了它们通过掺杂 EuCl3 对某些梳形共聚物的电性能的影响。活化能 (Ea) 由电导率计算。我们报告说，确定 (ɛˈ) 和 (ɛˈ) 值随着频率的增加而下降。例如，梳形聚合物也有许多应用领域；纳米技术，医学。本研究的目的是合成不同组成的梳型共聚物并研究它们的电性能。通过掺杂 EuCl3 对某些梳形共聚物的电性能的影响进行了研究。活化能 (Ea) 由电导率计算。我们报告说，确定 (ɛˈ) 和 (ɛˈ) 值随着频率的增加而下降。例如，梳形聚合物也有许多应用领域；纳米技术，医学。本研究的目的是合成不同组成的梳型共聚物并研究它们的电性能。通过掺杂 EuCl3 对某些梳形共聚物的电性能的影响进行了研究。活化能 (Ea) 由电导率计算。我们报告说，确定 (ɛˈ) 和 (ɛˈ) 值随着频率的增加而下降。例如，梳形聚合物也有许多应用领域；纳米技术，医学。本研究的目的是合成不同组成的梳型共聚物并研究它们的电性能。药物。本研究的目的是合成不同组成的梳型共聚物并研究它们的电性能。药物。本研究的目的是合成不同组成的梳型共聚物并研究它们的电性能。