| Autor: |
Li, Hong, Wu, Yijian, Hu, Yong, Bryan Coughlin, E., Zhang, Yongming |
| Předmět: |
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| Zdroj: |
Journal of Materials Science; Jun2015, Vol. 50 Issue 12, p4280-4287, 8p, 3 Black and White Photographs, 1 Diagram, 1 Chart, 3 Graphs |
| Abstrakt: |
Block copolymers, dinonylphenyl end-capped polyethylene glycol- b-polystyrene (DNPE-PEO- b-PSs) were synthesized in a one-step atom transfer radical polymerization (ATRP) of styrene. The PEO block in the DNPE-PEO- b-PS samples (volume fraction of PS: 66.8-93.2 %) was found to be amorphous, which contrasts with DNPE-PEO precursor, traditional methoxide end-capped polyethylene glycol- b-polystyrene (PEO- b-PS) and dinonylphenyl end-capped poly-(ethylene glycol)- b-poly(fluorinated methyl methacrylate)(DNPE-PEO- b-PFMAs). Meanwhile, DNPE-PEO- b-PSs display an intriguing self-assembly behavior in solution. Block copolymer particles with mesoporous internal structures are directly formed by self-assembly of DNPE-PEO- b-PS in tetrahydrofuran/water solutions. It is proposed that DNPE end group has an important effect on the crystallization of the block copolymers as well as their self-assembly behaviors in solution. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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