Radiation-induced grafting of sensitive polymers

• DOI: 10.1007/s10967-009-0505-9
• Publication Date: 2009-05-04T18:06:11Z
• Authors: E. Bucio; G. Burillo
• Keywords: 01 natural sciences; 0104 chemical sciences

Films of PP and PTFE were modified by gamma-radiation grafting of pH and thermo sensitive monomers (two step method) by using both the preirradiation and the direct methods. The effects of the absorbed dose, monomer concentration and reaction time were investigated. The surface chemistry of grafted samples was analyzed by FTIR-ATR spectroscopy, while their thermal properties were analyzed by TGA and DSC. The stimuli-responsive behavior was studied by swelling and contact angle in water, as well as by DSC. Sensitive films presented a critical pH and LCST.