کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9776204 | 1509483 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of Well-defined Block Copolymer Electrolytes Using Atom Transfer Radical Polymerization
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis of Well-defined Block Copolymer Electrolytes Using Atom Transfer Radical Polymerization Synthesis of Well-defined Block Copolymer Electrolytes Using Atom Transfer Radical Polymerization](/preview/png/9776204.png)
چکیده انگلیسی
A series of well-defined hydrophobic-hydrophilic di-blocks has been synthesized under environmentally friendly conditions through atom transfer radical polymerization (ATRP). The hydrophilic block is based on methoxy-capped oligo(ethylene glycol) methacrylate (nEGMA, n = 4â¼5, 8â¼9) and the hydrophobic component is PMMA block. ATRP prepared PMMA-Br (Mn 12000 Mw/Mn 1.37) was applied as a macroinitiator. Two solvent systems, acetone and mixed solvents of toluene/H2O (1/10), were employed. The acetone mediated polymerization gave the copolymer good control of molecular weight distribution (1.2) and rapid conversion. The toulene/H2O mediated polymerization provided the copolymer with a higher molecular weight but a less narrow polydispersity. The maximum conductivity was measured as 4.8 Ã 10â5 S/cm at 90 °C with di-block coplymer, (PMMA)x-b-(PnEGMA)y (n = 8â¼9, x/y ratio 3/1, contained â¼67 wt.% PEGMA), doped with Li salt ([EO:Li+] = 20:1). The conductivity at room temperature was ca 2 Ã 10â6 S/cm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 154, Issues 1â3, 22 September 2005, Pages 21-24
Journal: Synthetic Metals - Volume 154, Issues 1â3, 22 September 2005, Pages 21-24
نویسندگان
S.M. Chang, H.W. Liao, C.L. Lin, J.T. Lee,