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Temperature Sensitive Behavior of Poly( N ‐isopropylacrylamide) Grafted Onto Electron Beam‐Irradiated Poly(propylene)
Author(s) -
Bucio Emilio,
Burillo Guillermina,
Adem Esbaide,
Coqueret Xavier
Publication year - 2005
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200500074
Subject(s) - materials science , swelling , monomer , irradiation , grafting , copolymer , polymer chemistry , polymerization , electron beam processing , poly(n isopropylacrylamide) , yield (engineering) , acetone , analytical chemistry (journal) , chemical engineering , polymer , composite material , chemistry , organic chemistry , physics , nuclear physics , engineering
Summary: N ‐Isopropylacrylamide (NIPAAm) was graft‐polymerized from its acetone solution onto poly(propylene) (PP) films, after electron‐beam irradiation in the presence of air oxygen. The effects of pre‐irradiation dose as well as monomer concentration, reaction temperature and reaction time on the grafting efficiency were investigated. Typical conditions for achieving maximum grafting yield were observed for 1 M monomer concentration, after PP pre‐irradiation with a 300 kGy dose and a reaction temperature of 50 °C. The location of the graft polymerization was examined by different methods including measurements of dimensional variations, calorimetry, SEM and AFM. The temperature‐responsive behavior of grafted copolymer was studied by swelling and contact angle measurements at different temperatures.Temperature dependence of the swelling ratio in water as a function of temperature.