Surface characterization of pentaerythritol rosin ester

摘要

Pentaerythritol rosin ester (PERE), which is used as a tackifier in some adhesives, has been characterized by X-ray photoelectron spectroscopy (X.p.s.), secondary ion mass spectrometry (s.i.m.s.) and contact angle measurements. X.p.s. indicates that the surface layer of PERE consists mainly of tri- and tetraester, and many peaks have been assigned in the s.i.m.s. spectra. The surface energy of PERE is quite low which is probably a factor in making it useful as a tackifier.