Kinetically Trapped Block Copolymer Nano-Objects with Cylinder to Sphere Shape Transition Properties
文献类型：期刊论文
| 作者 | Li, Yuyan1; Peng, Bo2; Chen, Yongming1,2 |
| 刊名 | MACROMOLECULAR CHEMISTRY AND PHYSICS
 |
| 出版日期 | 2015-03-01 |
| 卷号 | 216期号:5页码:495-503 |
| 关键词 | block copolymers kinetics morphology phase separation self-assembly |
| 英文摘要 | Here, the cylinder to sphere transition property is reported in kinetically trapped block copolymer (BCP) nano-objects made from polystyrene-block-poly(N-isopropylacrylamide) (PS-b-PNIPAM) in ethanol. The PS-b-PNIPAM BCPs are found to self-assemble into hexagonally packed cylindrical morphology in bulk. When dispersing the bulk microphase-separated BCP materials in selective solvent, nanocylinders stabilized by kinetically trapped PS cores were obtained. However, when the kinetic barrier is removed by external energy input, a morphology transition from cylinder to sphere occurred. The transition procedure could be accelerated by applying higher external energy, which could be realized by using higher temperatures as well as treating with ultrasonic. Additionally, lowering the kinetic barrier by using polymers with a shorter PS block also accelerates the morphology transition process. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-11-02 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/28219]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing 100190, Peoples R China 2.Sun Yat Sen Univ, Sch Chem & Chem Engn, Key Lab Polymer Composite & Funct Mat, Minist Educ, Guangzhou 510275, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yuyan,Peng, Bo,Chen, Yongming. Kinetically Trapped Block Copolymer Nano-Objects with Cylinder to Sphere Shape Transition Properties[J]. MACROMOLECULAR CHEMISTRY AND PHYSICS,2015,216(5):495-503. |
| APA | Li, Yuyan,Peng, Bo,&Chen, Yongming.(2015).Kinetically Trapped Block Copolymer Nano-Objects with Cylinder to Sphere Shape Transition Properties.MACROMOLECULAR CHEMISTRY AND PHYSICS,216(5),495-503. |
| MLA | Li, Yuyan,et al."Kinetically Trapped Block Copolymer Nano-Objects with Cylinder to Sphere Shape Transition Properties".MACROMOLECULAR CHEMISTRY AND PHYSICS 216.5(2015):495-503. |
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来源：化学研究所
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