Self-bonding in an amorphous polymer below the glass transition: A T-peel test investigation

Publication: Research - peer-reviewJournal article – Annual report year: 2004

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Films of amorphous polystyrene (PS) with a weight-average molecular weight (Mw) of 225 × 103 g/mol were bonded in a T-peel test geometry, and the fracture energy (G) of a PS/PS interface was measured at the ambient temperature as a function of the healing time (th) and healing temperature (Th). G was found to develop with (th)1/2 at Th = Tg-bulk - 33 °C (where Tg-bulk is the glass-transition temperature of the bulk sample), and log G was found to develop with 1/Th at Tg-bulk - 43 °C Th Tg-bulk - 23 °C. The smallest measured value of G = 1.4 J/m2 was at least one order of magnitude larger than the work of adhesion required to reversibly separate the PS surfaces. These three observations indicated that the development of G at the PS/PS interface in the temperature range investigated (
Original languageEnglish
JournalJournal of Polymer Science. Part B, Polymer Physics
Publication date2004
Volume42
Journal number10
Pages1861-1867
ISSN0887-6266
StatePublished
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