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Surface functionalization of PHBV by HEMA grafting via UV treatment: Comparison with thermal free radical polymerization
Author(s) -
Lao HoiKuan,
Renard Estelle,
Langlois Valérie,
ValléeRehel Karine,
Linossier Isabelle
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.31507
Subject(s) - grafting , benzophenone , benzoyl peroxide , surface modification , polymer chemistry , materials science , fourier transform infrared spectroscopy , monomer , polymerization , scanning electron microscope , chemical engineering , polymer , composite material , engineering
The photochemical grafting HEMA onto poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) PHBHV films using benzophenone (BP) or H 2 O 2 as initiator was investigated to develop a route of grafting restricted to the surface. The effect of various parameters, such as monomer concentration, initiator, and reaction time, on grafting yield was studied and compared with results obtained when using benzoyl peroxide (BPO) as initiator. The morphology and structure of grafted films were characterized by Fourier Transform Infrared spectroscopy with attenuated reflexion, scanning electron microscope and Energy Dispersive X‐ray Analysis. The results show that BP and H 2 O 2 are very efficient for the grafting on the surface PHBV. The process is very fast and easy and the results are reproducible in a wide range. Photoinitiation grafted only on the surface in comparison with BPO, where the grafting is located in all the bulk of film. The films grafted by UV in presence of H 2 O 2 are totally biodegradable when the graft level was low (less than 10%). © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010