TY - JOUR
T1 - Influence of α-methyl group on molecular aggregation structure and surface physicochemical properties of fluoroalkyl side chain polymers
AU - Honda, K.
AU - Yamaguchi, H.
AU - Sakata, O.
AU - Sasaki, S.
AU - Takata, M.
AU - Morita, M.
AU - Takahara, A.
PY - 2009
Y1 - 2009
N2 - Influence of α-methyl group on molecular aggregation states and surface physicochemical properties of poly(fluoroalkyl acrylate)s [PFA-C y, where y is fluoromethylene number in Rf group] and poly(fluoroalkykl methacrylate)s [PFMA-Cy] thin films were systematically investigated. Spin-coated PFA-Cy and PFMA-C y thin films were characterized by dynamic contact angle measurements and grazing-incidence wide-angle X-ray diffraction (GIWAXD) measurements. GIWAXD data revealed that fluoroalkyl side chains of PFA-Cy and PFMA-Cy with y≥8 formed regular structures in the surface region as well as bulk one. However, the degree of orientation and ordering of the Rf groups of PFMA-C8 thin films was low. Also, the receding contact angle (θr) of PFMA-C8 thin films was lower than that of PFA-C8 ones. By annealing treatment, the θr of PFMA-C8 was increased. These results suggest that the Rf groups of PFMA-C8 were disordered due to presence of the α-methyl group. The Rf groups became ordered to pack closely each other by annealing treatment, so that the water repellency was increased.
AB - Influence of α-methyl group on molecular aggregation states and surface physicochemical properties of poly(fluoroalkyl acrylate)s [PFA-C y, where y is fluoromethylene number in Rf group] and poly(fluoroalkykl methacrylate)s [PFMA-Cy] thin films were systematically investigated. Spin-coated PFA-Cy and PFMA-C y thin films were characterized by dynamic contact angle measurements and grazing-incidence wide-angle X-ray diffraction (GIWAXD) measurements. GIWAXD data revealed that fluoroalkyl side chains of PFA-Cy and PFMA-Cy with y≥8 formed regular structures in the surface region as well as bulk one. However, the degree of orientation and ordering of the Rf groups of PFMA-C8 thin films was low. Also, the receding contact angle (θr) of PFMA-C8 thin films was lower than that of PFA-C8 ones. By annealing treatment, the θr of PFMA-C8 was increased. These results suggest that the Rf groups of PFMA-C8 were disordered due to presence of the α-methyl group. The Rf groups became ordered to pack closely each other by annealing treatment, so that the water repellency was increased.
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U2 - 10.1088/1742-6596/184/1/012007
DO - 10.1088/1742-6596/184/1/012007
M3 - Article
AN - SCOPUS:69649088667
SN - 1742-6588
VL - 184
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012007
ER -