Sen Li, Ming-zu Zhang, Jin-lin He, Pei-hong Ni. Film Properties of Fluorinated Polymethacrylate/Polyisobutylene Based Block Copolymers. [J]. Acta Polymerica Sinica (12):1648-1658(2014)
DOI:
Sen Li, Ming-zu Zhang, Jin-lin He, Pei-hong Ni. Film Properties of Fluorinated Polymethacrylate/Polyisobutylene Based Block Copolymers. [J]. Acta Polymerica Sinica (12):1648-1658(2014) DOI: 10.11777/j.issn1000-3304.2014.14140.
Film Properties of Fluorinated Polymethacrylate/Polyisobutylene Based Block Copolymers
Fluorinated triblock terpolymers PIB-b-PDMAEMA-b-POFPMA was synthesized by oxyanion-initiated polymerization and characterized by 1H-NMR and GPC.The physicochemical and film properties were studied in detail.Firstly
the thermal decomposition behavior and glass transition temperature (Tg) were studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC)
respectively.These results showed that PIB60-b-PDMAEMA63 have one transition temperature at -4 ℃ due to the compatibility of PIB and PDMAEMA segments
and the triblock terpolymer PIB60-b-PDMAEMA63-b-POFPMA11 have an additional Tg at 26 ℃ which corresponded to the glass transition temperature of POFPMA.Subsequently
the polymeric thin films were prepared by casting polymer/THF solutions on glass slides or PTFE panel substrates.It was found that the triblock terpolymers have a certain hydrophobic and oleophobic properties by contact angle test.The surface free energy
dispersion and polar components were calculated according to Owens-Wendt formulas.The results of AFM
SEM and XPS showed the migration of fluoride part to the surface and accumulation after annealing to minimize interfacial free energy.Ordered structure of fluorinated chains on the surface was studied by XRD.The results of XRD showed that the fluorinated chains would be rearranged to transform into a double-layer packing after annealing.