Phase Transition of Lipid Multilamellar Aqueous Suspension under High Pressure. : IV. Chain Packing Conformation of Dipalmiloyl Phopholipid in Temperature Range between Pre- and Sub-Transition
スポンサーリンク
概要
- 論文の詳細を見る
Wide-angle X-ray scattering (WAXS) measurements for a lipid multilamellar aqueous suspension have been studied using computer profile analyses; these suggest that in the temperature range between the pre- and sub-transition, hydrocarbon chain packing conformation does not have a single structure with quasi-hexagonal or orthorhombic symmetry. Under atmospheric pressure there exists a sharp X-ray reflection at about 4.2 Å, followed by a more diffuse peak at a higher angle within this intermediate zone. With increasing pressure these two reflection peak heights indicate changes that are independent of each other; one has a decreasing and the other an increasing tendency. Thus, a comparison of the WAXS profile under atmospheric pressure with that under 300 MPa obviously shows a reversal in these two peak heights. As a result, the iea that the pre- and sub-transition intermediate is composed of a two-component system with the same hexagonal symmetry is introduced.
- 社団法人応用物理学会の論文
- 1987-06-20
著者
関連論文
- Development of High-Pressure Dilatometer for Polymer Studies
- Pressure Effects on the Carrier Mobility in Polycarbonate Doped with Pyrazolines
- Application of Ultrasonic Spectroscopy to Ferroelectric Phase Transition of VDF/TrEE Copolymer : Physical Acoustics
- Pressure Effect on Ferroelectric Phase Transition of Vinylidene Fluoride-Trifluoroethylene Copolymer (54/46 mol%)
- SAXS and AE Studies on the Origin of Softening in Poly (methyl Methacrylate) under Uniaxial Tensile Stress
- Fine Structure of the III-I Transition and Molecular Motion in Polytetrafluoroethylene
- Effect of Radiation and Impurities on Microscopic Deformation Process in PMMA
- Light Scattering Measurement in PMMA Optical Fibers
- Hypersonic Velocities and Submicrocrack Formation in Ductile Polymers under Uniaxial Tensile Stress
- Time Dependent Small Angle X-Ray Scattering Study in Poly (methyl Methacrylate) under Uniaxial Tensile Stress
- Brillouin Scattering from PMMA under Uniaxial Tensile Stress
- Phase Transition of Lipid Multilamellar Aqueous Suspension under High Pressure. : IV. Chain Packing Conformation of Dipalmiloyl Phopholipid in Temperature Range between Pre- and Sub-Transition
- Phase Transition of Lipid Multilamellar Aqueous Suspension under High Pressure V. Ultrasonic Measurements in Temperature Range from 4th Transition to Main One under High Pressure