Solvent effect on the aggregation behavior of rod-coil diblock copolymers
文献类型：期刊论文
| 作者 | Zhang, Jie; Lin, Weiran; Liu, Anhua; Yu, Zhenning; Wan, Xinhua; Liang, Dehai; Zhou, Qifeng |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2008-04-15 |
| 卷号 | 24期号:8页码:3780-3786 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/la703888m |
| 英文摘要 | The water-induced aggregation behavior of rod-coil diblock copolymers based on poly(ethylene oxide) (PEO) and poly 1(+)-2,5-bis[4'-((S)-2-methylbutoxy)phenyl]styrene} (PMBPS), PEO104-b-PMBPS53, was investigated in the common solvent THF and in the selective solvent dioxane. Before adding water, PEO104-b-PMBPS53 stayed as single polymer chains no matter what conformation the PEO block took (i.e., either the random coil conformation in THF or the compact globule conformation in dioxane). The critical water content (similar to 6 wt%) at which PEO104-b-PMBPS53 began to aggregate was also similar in both solvents, indicating that PMBPS dominated the aggregation process. However, the size, the size distribution, and the morphology of aggregates in THF/water were quite different from those in dioxane/water. Narrowly distributed spheres with R-h approximate to 20 nm were observed in dioxane, whereas in THF, a bimodal distribution peaked at 3 and similar to 300 nm, was observed. The results from 2D wide-angle X-ray diffraction and polarized optical microscopy demonstrated that the PMBPS blocks packed in a parallel pattern upon aggregation in dioxane/water. The anisotropic disclike structures observed in THF/water also indicated the orientation of the PMBPS blocks upon forming aggregates in dilute solution. |
| 语种 | 英语 |
| WOS记录号 | WOS:000254647400015 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/65043]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wan, Xinhua |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Key Lab Polymer Chem & Phys MOE, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jie,Lin, Weiran,Liu, Anhua,et al. Solvent effect on the aggregation behavior of rod-coil diblock copolymers[J]. LANGMUIR,2008,24(8):3780-3786. |
| APA | Zhang, Jie.,Lin, Weiran.,Liu, Anhua.,Yu, Zhenning.,Wan, Xinhua.,...&Zhou, Qifeng.(2008).Solvent effect on the aggregation behavior of rod-coil diblock copolymers.LANGMUIR,24(8),3780-3786. |
| MLA | Zhang, Jie,et al."Solvent effect on the aggregation behavior of rod-coil diblock copolymers".LANGMUIR 24.8(2008):3780-3786. |
入库方式： OAI收割
来源：化学研究所
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