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Some Effects of Corona Plasma Treatment of Polylactide/Montmorillonite Nanocomposite Films
Author(s) -
Żenkiewicz Marian,
Richert Józef,
Rytlewski Piotr,
Moraczewski Krzysztof
Publication year - 2009
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200930901
Subject(s) - diiodomethane , nanocomposite , contact angle , materials science , montmorillonite , composite material , aluminosilicate , surface energy , polymer , corona discharge , chemical engineering , chemistry , organic chemistry , electrode , engineering , catalysis
Influence of the unit energy ( E u ) of corona discharge used for modification of pure polylactide (PLA) and polylactide nanocomposite (PLAC) containing 5 wt% of an aluminosilicate nanofiller (Cloisite 30B) on water (Θ W ) and diiodomethane (Θ D ) contact angles as well as on surface free energy ( γ s ) of these polymers was studied. Θ W and Θ D as advancing contact angles were measured with use of a goniometer while γ s was calculated by the Owens–Wendt method. It was found that Θ W increased with the rising E u while Θ D remained approximately constant. Assuming E u = const, it could be stated that the increase in γ s was much more evident for PLA than for PLAC. This increase resulted practically from the change in the polar component of γ s because the dispersive component for the two materials only slightly decreased with increase in E u .