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231223s2006 xx ||||| 00| ||eng c |
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|a DE-627
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|e rakwb
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|a eng
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|a Jurak, Malgorzata
|e verfasserin
|4 aut
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|a Topography and surface free energy of DPPC layers deposited on a glass, mica, or PMMA support
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| 264 |
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 17.08.2007
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|a Date Revised 08.08.2006
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a An investigation of energetic properties of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) layers deposited on glass, mica, and PMMA (poly(methyl methacrylate)) surfaces was carried out by means of contact angles measurements (advancing and receding) for three probe liquids (diiodomethane, water, and formamide). DPPC was deposited on the surfaces from water (on glass and mica) or methanol (on PMMA) solutions. The topography of the tested surfaces was determined with a help of scanning electron microscopy (SEM) and atomic force microscopy (AFM). Using the measured contact angles, the total apparent surface free energy and its components of the studied layers were determined from van Oss et al.'s (Lifshitz-van der Waals and acid-base components, LWAB) and contact angle hysteresis (CAH) approaches. It allowed us to learn about changes in the surface free energy of the layers (hydrophobicity/hydrophilicity) depending on their number and kind of support. It was found that the changes in the energy greatly depended on the surface properties of the substrate as well as the statistical number of monolayers of DPPC. However, principal changes took place for first three monolayers
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|a Journal Article
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|a Chibowski, Emil
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 22(2006), 17 vom: 15. Aug., Seite 7226-34
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|x 1520-5827
|7 nnns
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| 773 |
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|g volume:22
|g year:2006
|g number:17
|g day:15
|g month:08
|g pages:7226-34
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|a AR
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|d 22
|j 2006
|e 17
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|c 08
|h 7226-34
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