نتایج جستجو برای: polytrimethylene terephthalate
تعداد نتایج: 7290 فیلتر نتایج به سال:
By employing a “modulated-temperature” heating programme composed of a series of heat-isotherm stages, it is possible to separate the change in dimensions of an oriented material during heating into two contributions: a thermally “reversing” component which is due to linear thermal expansion and a “nonreversing” part arising from relaxation to the disordered state on heating above Tg . Some pre...
High-performance poly(1,4-butylene terephthalate (PBT) nanocomposites have been developed via the consideration of phosphorus-containing agents and amino-carbon nanotube (A-CNT). One-pot functionalization method has been adopted to Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 17 January 2018 doi:10.20944/preprints201801.0161.v1 © 2018 by the author(s). Distributed under a Creativ...
Bulk samples and thin sections of polyethylene terephthalate (PET) and polyimide (PI) were irradiated with Se and Pb ions of 11.4 MeV/u at the UNILAC. The creation of latent tracks and related structural changes were studied by means of transmission electron microscopy (TEM) using a 200 kV Philips CM200-UTW microscope (point resolution 0.17 nm). Due to relatively similar electron densities with...
In the title coordination polymer, [Zn(C(8)H(4)O(4))(C(5)H(5)N)(2)](n), the Zn(II) atom, located on a twofold rotation axis, is tetra-coordinated by two monodentate O atoms from two different carboxyl-ate groups and two pyridyl N atoms, forming a distorted tetra-hedral geometry. The Zn(II) atoms are bridged by terephthalate ligands, generating an infinite zigzag chain along [101].
Reorientation in the magnetic anisotropy as a function of film thickness has been observed in Co-Ni and Co thin films, obliquely sputtered on a polyethylene terephthalate substrate at a large incidence angle ~70°!. This effect is a consequence of the low magnetocrystalline anisotropy of the films ~fcc structure of Co! and changes in microstructure from nuclei to columns according to the thickne...
Voltage-clamp experiments of eight oligoester bolaamphiphiles in two subclasses are described. Syntheses of three new terephthalate-based compounds were achieved in three linear steps. Together with five previously described, related compounds, the ion transport activity was assessed by means of the voltage-clamp technique. All of the compounds show multiple types of conductance behavior in pla...
The asymmetric unit of the title compound, C28H26O6, contains one half-mol-ecule, with the complete molecule generated by a crystallographic inversion center. The central terephthalate and meth-oxy-benzene rings are approximately perpendicular, making a dihedral angle of 80.31 (5)°. No specific directional contacts are noted in the crystal packing. The terminal vinyl group is disordered over tw...
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