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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.
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页码:5629 / 5638
页数:10
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