Well-defined polycaprolactone precursors for low surface-energy polyurethane films

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

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)
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Abstract

For the purpose of developing model coating systems, it is important to use well-defined coating precursors. In this work, polyester oligomers were synthesized by controlled ring-opening polymerization of -caprolactone and 4-tert-butyl--caprolactone via an activated monomer mechanism. These well-defined oligomers, including 3-armed hydroxyl-functionalized polyesters and perfluoroalkyl-end-capped linear polyesters, have been obtained with controlled functionality and low-molecular weight polydispersity and without the formation of cyclic structures, as demonstrated by MALDI-ToF MS analyses. The polymer architecture and functionality can be tuned by using different initiating alcohols. These oligomers have been used as precursors to prepare model low surface-energy polyurethane coatings. Upon the addition of about 1 wt % of fluorine in the polyurethane films, the advancing contact angles for water and hexadecane have been increased to 105° and 78°, respectively; the surface enrichment of fluorinated species has been confirmed by X-ray photoelectron spectroscopy.
Original languageEnglish
Pages (from-to)218-227
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume46
Issue number1
DOIs
Publication statusPublished - 2008

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