Author(s)

Alejandra Jiménez-Morales, Alejandro Ramos-Ballesteros, Emilio Bucio^*

Departamento de Química de Radiaciones y Radioquímica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, México DF, México.

Silicone rubber films were modified by the consecutive grafting of 2-(diethylamino)ethyl methacrylate (DEAEMA) and N-vinylcaprolactam (NVCL) using direct method on two steps with gamma-rays. The effect of absorbed dose and monomer concentration on grafting degree was determined. The grafted samples were verified by FTIR-ATR spectroscopy and swelling; thermal properties were analyzed by DSC and TGA. The stimuli-responsive behavior was studied by swelling and/or DSC. Thermo- and pH-sensitive films of (PP-g-DEAEMA)-g-NVCL presented a pH critical at 3.2 and LCST around 63.5℃.

Radiation-Grafting, Smart Polymers, 2-(Diethylamino)ethyl Methacrylate, N-Vinylcaprolactam

Jiménez-Morales, A. , Ramos-Ballesteros, A. and Bucio, E. (2016) Synthesis of Temperature- and pH-Sensitive Graft Copolymer Containing 2-(Diethylamino)ethyl Methacrylate and N-Vinylcaprolactam onto Silicone Rubber. Open Journal of Polymer Chemistry, 6, 15-26. doi: 10.4236/ojpchem.2016.63003.