In-situ Observation of the Growth of Fibrous and Dendritic Crystals in Quasi-2-dimensional Poly(ethylene oxide) Ultrathin Films

周圆; 韩霞; 刘洪来; 胡英

doi:10.1016/S1004-9541(14)60046-X

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In-situ Observation of the Growth of Fibrous and Dendritic Crystals in Quasi-2-dimensional Poly(ethylene oxide) Ultrathin Films

化工热力学 | Updated：2026-01-06

- In-situ Observation of the Growth of Fibrous and Dendritic Crystals in Quasi-2-dimensional Poly(ethylene oxide) Ultrathin Films
- Chinese Journal of Chemical Engineering Vol. 22, Issue 3, Pages: 339-3451004-9541(2014)
- Affiliations：
  
  Key Laboratory for Advanced Materials and Department of Chemistry, East China University of Science and Technology,Shanghai,China,200237
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(14)60046-X
  CLC：
- Published：2014
- Accepted：
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DOI：

- DOI： 10.1016/S1004-9541(14)60046-X.

摘要

Abstract

Crystal growth processes of poly(ethylene oxide) were followed from the original nucleation sites by using atomic force microscopy. Two distinct quasi-2-dimensional crystals about 4 nm thick were obtained from as-spun polymer ultrathin films: fibrous crystals

generated by the shearing field via spin-coating

coexist with conventional dendrites. The growth of the two structures is dominated by diffusion limited aggregation

though the growth rate of the fibrous crystals is around one order of magnitude faster than that of the dendrites. The fibrous crystals are more stable than the dendritic ones.

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