화학공학소재연구정보센터
Journal of Polymer Science Part B: Polymer Physics, Vol.38, No.12, 1617-1625, 2000
Polyesters with semifluorinated side chains: A proposal for the solid-state structure
A proposal for the solid-state structure of poly(p-phenylene isophthalate) with oxydecylperfluorodecyl side chains is presented, which was calculated by the new Rietveld refinement program BGMN(R). A triclinic unit cell with alpha = 0.575 am, b = 4.06 nm, c = 2.1 nm, alpha = 91.2 degrees, beta = 85.7 degrees, and gamma = 66.1 degrees was obtained using space group symmetry P (1) over bar (No. 2) with Z = 2. All fractional atom coordinates, reflections and structure factors F were determined. The results show that highly occupied netplanes lie in plane and perpendicularly to the side chains. It may be supposed that these net planes will form the low-energy surface of the polymer.