Self-replenishing low surface-energy polyurethane films

T. Dikic, W. Ming, P.C. Thüne, M. Tian, R.A.T.M. Benthem, van, G. With, de

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic


Surface segregation is a concept frequently used for obtaining films with desired surface functionality, such as surfaces enriched in low surface-energy species. Low surface-energy films with fluorine-rich surfaces have many desirable properties such as water/oil repellency and low friction coeff., and have been developed via surface segregation of fluorinated species during film formation. However, it has been shown that the fluorine-enriched layer is generally very thin (<20 nm), and the coating may not sustain the low surface-energy character upon mech. abrasion. We have developed a self-replenishing strategy to sustain the low surface-energy character of partially fluorinated polyurethane films: in case of surface damage that leads to the loss of the top layers of the coating, fluorinated tails from sub-layers can reorient themselves to minimize the air/film interfacial energy of the newly created surface. The network mobility and a proper spacer between the fluorinated tail and the cross-linked network have proven to be the key elements in realizing the self-replenishing behavior. [on SciFinder (R)]
Originele taal-2Engels
TitelAbstracts of Papers, 235th ACS National Meeting, New Orleans, LA, United States
Plaats van productieWashington, D. C
UitgeverijAmerican Chemical Society
StatusGepubliceerd - 2008
Evenement235th ACS National Meeting - New Orleans, Verenigde Staten van Amerika
Duur: 6 apr. 200810 apr. 2008


Congres235th ACS National Meeting
Land/RegioVerenigde Staten van Amerika
StadNew Orleans
AnderThe 235th ACS Spring National Meeting, New Orleans, LA, April 6-10, 2008


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