Grafting of poly(acrylic acid) (PAA) onto all aluminum surface was successfully achieved by free radical polymerization of acrylic acid using typical radical initiators, benzoyl peroxide and 2,2'-azobisisobutyronitrile. Both spotlike and brush morphologies were achieved. A complete coverage of PAA oil in aluminum surface was then achieved by using a thermal chemical vapor deposition process. The PAA thickness was determined by ellipsometry and the superficial chemical composition by X-ray photoelectron spectroscopy (XPS). Grazing angle Fourier transform infrared (FTIR) spectroscopy confirmed the presence of carboxylic acid groups on the surface, and the contact angle Measurements revealed a decreasing free surface energy of aluminum due to the polymer surface covering.
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Indian Inst Technol, Dept Text Technol, New Delhi 110016, IndiaIndian Inst Technol, Dept Text Technol, New Delhi 110016, India
Gupta, Bhuvanesh
Grover, Navdeep
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Indian Inst Technol, Dept Text Technol, New Delhi 110016, India
Indian Inst Technol, Ctr Biomed Engn, New Delhi 110016, IndiaIndian Inst Technol, Dept Text Technol, New Delhi 110016, India
Grover, Navdeep
Singh, Harpal
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Indian Inst Technol, Ctr Biomed Engn, New Delhi 110016, IndiaIndian Inst Technol, Dept Text Technol, New Delhi 110016, India