Details

Autor(en) / Beteiligte

• Bates, Christopher M
• Chang, Alice B
• Momčilović, Nebojša
• Jones, Simon C
• Grubbs, Robert H

Titel

ABA Triblock Brush Polymers: Synthesis, Self-Assembly, Conductivity, and Rheological Properties

Ist Teil von

• Macromolecules, 2015-07, Vol.48 (14), p.4967-4973

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2015

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The synthesis, self-assembly, conductivity, and rheological properties of ABA triblock brush polymers (BBCPs) with grafted polystyrene (A block, N PS = 21) and poly­(ethylene oxide) (B block, N PEO = 45) side chains are reported. Two backbone molecular weights (N A:N B:N A = 11:78:11 and 15:119:15) were investigated with lithium bis­(trifluoro­methane)­sulfonimide (LiTFSI) doping ratios 2 ≤ [EO]:[Li+] ≤ 20. Blends with 2 ≤ [EO]:[Li+] ≤ 10 suppress PEO crystallization and self-assemble into hexagonally packed cylinders of the minority gPS component. Conductivity is on the order of 10–3 S/cm at 105 °C with a corresponding elastic modulus ca. 104 Pa. The optimum conductivity occurs at a blend ratio near 10:1 [EO]:[Li+], similar to that reported for linear block copolymer analogues.