A number of results reported on the kinetics of exchange of triblock copolymers poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), PEO-PPO-PEO, between micelles and the intermicellar aqueous solution are reviewed and analyzed to extract the rate constants k(+) for the entry of a copoly
Self-diffusion study of poly (ethylene oxide)-poly (propylene oxide)-poly (ethylene oxide) block copolymers in aqueous solution
✍ Scribed by G. Fleischer; P. Bloß; W-D Hergeth
- Publisher
- Springer
- Year
- 1993
- Weight
- 424 KB
- Volume
- 271
- Category
- Article
- ISSN
- 0340-255X
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Gold nanosheets having single crystalline structure were successfully synthesized using the bulk phase mixture of HAuCl 4 and poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers through the irradiation of a glow lamp for 5 days. When the molar ratio of propylene oxide to
Phase behavior of aqueous systems containing block copolymers of poly(ethylene oxide (PEO) and poly(propylene oxide) (PPO) was evaluated by building up temperature-concentration phase diagrams. We have studied bifunctional triblock copolymers (HO-PEO-PPO-PEO-OH) and monofunctional diblock copolymers
The hydrophilic-lipophilic character of these polymers can The self-assembly behavior in water of a mixture of two poly be tailored by varying their molecular weight and relative (ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) block size. A number of PEO-PPO-PEO copolymers have copol
Suzuki reaction under phase transfer conditions: 15 mmol phenylboronic acid, 13 mmol p-iodoanisole, 0.01 mmol PdCl 2 [Ph 2 P(CH 2 ) 4 SO 3 K] 2 , 45 mmol Na 2 CO 3 in toluene/ethanol/water = 15 : 15 : 15 ml with 400 mg of different block copolymers; at 78 8C