Comb-Like Fluorinated Polystyrenes Having Different Side Chain Interconnecting Groups

Abstract

Comb-like fluorinated polystyrenes with different side chain interconnecting groups between backbone and side chain, such as ether (PST-O), thioether (PST-S) and sulfone (PST-SO 2 ), were synthesized in order to examine the effect of the interconnecting groups on the surface order and properties. Near edge X-ray absorption fine structure spectroscopy and grazing incidence wide-angle X-ray diffraction showed that PST-SO 2 with very polar sulfone groups exhibited a lower tilt angle of the fluorinated helix to the surface normal as well as higher packing density of fluorinated alkyl side chains than PST-O and PST-S, which have less polar groups. As a result of the ordered structure at the polymer-air interface, PST-SO 2 has a smaller surface energy and better stability in water than PST-O and PST-S. These results suggest that the introduction of polar groups to the side chains of comb-like fluorinated polymers can improve the surface properties including the hydrophobicity and stability of fluorinated surfaces.

Comb-like polymer blends of poly(oxyethylene)s with CH3-terminated and CF3-terminated alkylsulfonylmethyl side chains: Effect of terminal CF3 moiety on the surface properties of the blends

“…In particular, they enable polymer surfaces with the desired properties to be prepared using various combinations of polymer backbones and functional side chains [18][19][20][21]. However, to the best of our knowledge, the use of comb-like polymers having side chain crystalline structures as the blend component has not yet been studied for the purpose of controlling the surface properties, although these polymers have special surface features such as a low surface energy, antifouling effects, and excellent stability under water [22][23][24].…”

Liquid Crystal Alignment Properties of Poly‐(3‐thiopheneacetate)/Dialkyldimethylammonium Complexes

“…In particular, significant polarization dependence is clearly demonstrated by the CÀH/Rydberg peaks around 288 eV and the CÀC s à orbital peak at 293 eV. [21,22] The intensities of the CÀH/Rydberg peaks at 908 (normal incidence) are larger than those at 208 (grazing incidence), whereas the intensities of CÀC s à orbital peaks at grazing incidence are larger than those at normal incidence. Therefore alkyl chains of the PTA-Cn are expected to orient more or less perpendicularly to the surface [23] Y.-S. Yoon although the degree of order was found to vary according to the number of carbons.…”

Effect of alkyl side chain substitution on molecular structure of comb-like poly(2-hydroxyethyl methacrylate) derivatives

“…[1][2][3][4][5] In many comb-like polymers, the long side chains tend to crystallize in an interdigitated structure and lie normal to the main chain backbone. The lengths of the side chains of comblike polymers can also be modified in order to obtain different molecular structures and physical properties within the same polymer system.…”