ICCAS OpenIR
Surface Depletion of the Fluorine Content of Electrospun Fibers of Fluorinated Polyurethane
Wu, Wanling; Yuan, Guangcui; He, Aihua; Han, Charles C.
2009-03-03
Source PublicationLANGMUIR
ISSN0743-7463
Volume25Issue:5Pages:3178-3183
AbstractFor materials containing fluorine, it has been generally accepted that fluorinated segments or end groups tend to aggregate in the outer surface because of the low surface energy, which endows the fluorinated materials with special surface properties such as self-cleaning, superhydrophobicity, and so forth. However, for the electrospun fibrous membranes of polyurethane elastomers containing perfluoropolyether segments (FPU), abnormal fluorine aggregations in the core of the electrospun fibers were observed. The XPS analysis indicated a rather low fluorine content at the surface of the electrospun FPU fibers. Further study with dynamic light scattering and fluorescence showed that FPU chains can form aggregates in the concentrated solution. Therefore, it can be deduced that the rapid evaporation of solvent and fast formation of fibers during the electrospinning process could result in the freeze-in of the aggregated chain conformation and the depletion of fluorine units on the surface of the electrospun FPU fibers.
DOI10.1021/la803580g
Indexed BySCI
Language英语
WOS IDWOS:000263770800095
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66502
Collection中国科学院化学研究所
Corresponding AuthorHe, Aihua
AffiliationChinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, State Key Lab Polymer Phys & Chem,Joint Lab Polym, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wu, Wanling,Yuan, Guangcui,He, Aihua,et al. Surface Depletion of the Fluorine Content of Electrospun Fibers of Fluorinated Polyurethane[J]. LANGMUIR,2009,25(5):3178-3183.
APA Wu, Wanling,Yuan, Guangcui,He, Aihua,&Han, Charles C..(2009).Surface Depletion of the Fluorine Content of Electrospun Fibers of Fluorinated Polyurethane.LANGMUIR,25(5),3178-3183.
MLA Wu, Wanling,et al."Surface Depletion of the Fluorine Content of Electrospun Fibers of Fluorinated Polyurethane".LANGMUIR 25.5(2009):3178-3183.
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