کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5211212 | 1382940 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of vinyl-type functionalized polynorbornenes with cyclic pendant imide side groups by using palladium-based catalyst for low dielectric constant materials
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A set of functionalized polynorbornenes with various substituted pendant imide groups (N-substituent imide group = adamantyl, cyclohexyl, tolyl, and phenyl) have been prepared via vinylic pathway by using di-μ-chloro-bis-(6-methoxybicyclo[2.2.1]-hept-2-ene-endo-5Ï,2Ï)-palladium(II) catalyst as a means of developing materials for low dielectric constant. The effects of molar ratio of monomer to catalyst, solvent polarity, reaction time, and temperature on the polymerization of substituted norbornene-5,6-dicarboximide were investigated. Among the monomers used, exo-N-cyclohexyl-norbornene-5,6-dicarboximide recorded the highest activity, giving 90% conversion in 30 min. All the resulting functionalized polynorbornenes are characterized by good thermal properties (â¼5% weight loss at 440 °C) and low dielectric constants (2.26-2.53), which are desirable for the next generation of microprocessors and memory for computers to provide insulation in the increasingly shrinking feature sizes of faster microprocessors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 68, Issue 12, December 2008, Pages 1619-1624
Journal: Reactive and Functional Polymers - Volume 68, Issue 12, December 2008, Pages 1619-1624
نویسندگان
Binyuan Liu, Yang Li, Anu Stella Mathews, Yige Wang, Weidong Yan, Sinoj Abraham, Chang-Sik Ha, Dae-Won Park, Il Kim,