Direct Imaging of the Crystalline Domains and Their Orientation in the PS-b-PEO Block Copolymer with 4D-STEM

被引:1
|
作者
Chen, Min [1 ,2 ,3 ]
Bustillo, Karen C. [3 ]
Patel, Vivaan [2 ,4 ]
Savitzky, Benjamin H. [3 ]
Sternlicht, Hadas [1 ,3 ]
Maslyn, Jacqueline A. [2 ,4 ]
Loo, Whitney S. [2 ,4 ,5 ]
Ciston, Jim [3 ]
Ophus, Colin [3 ]
Jiang, Xi [2 ]
Balsara, Nitash P. [2 ,4 ]
Minor, Andrew M. [1 ,2 ,3 ]
机构
[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
[2] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA
[3] Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Mol Foundry, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA
[5] Univ Wisconsin Madison, Dept Chem & Biol Engn, Madison, WI 53706 USA
关键词
IONIC-CONDUCTIVITY; ELECTROLYTES; POLYMERS; LAMELLAE;
D O I
10.1021/acs.macromol.3c02231
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The arrangement of crystalline domains in semicrystalline polymers is key to understanding how to optimize the nanostructured morphology for enabling better properties. For example, in polystyrene-b-poly(ethylene oxide) (PS-b-PEO), the degree of crystallinity and arrangement of the crystallites within the PEO phase plays a crucial role in determining the physical properties of the electrolyte. Here, we used four-dimensional scanning transmission electron microscopy to directly visualize the crystal domains within the PEO-rich region of the PS-b-PEO block copolymer and show the relative angle of the domain with respect to the PEO-PS interface. As demonstrated here, our analysis method is applicable to other electron-beam sensitive materials, especially semicrystalline polymers, to unveil their local phase condition and distribution.
引用
收藏
页码:5629 / 5638
页数:10
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