Crystallographic data for various polymers
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Crystallographic data for various polymers

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Published by Chemstrand Research Center in Durham, N.C .
Written in English

Subjects:

  • Crystallography -- Tables.,
  • Polymers.

Book details:

Edition Notes

Statementby Robert L. Miller ; with and appendix by R.L. McCullough.
The Physical Object
Pagination53 leaves ;
Number of Pages53
ID Numbers
Open LibraryOL14266661M

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The full text of this article hosted at is unavailable due to technical by: Polymer electron crystallography may be defined as the quantitative use of electron micrographs and electron diffraction intensities for the determination of polymer crystal structures. Data from thin single microcrystals are required for successful structure determination. Crystallography is the experimental science of determining the arrangement of atoms in crystalline solids (see crystal structure).The word "crystallography" is derived from the Greek words crystallon "cold drop, frozen drop", with its meaning extending to all solids with some degree of transparency, and graphein "to write". In July , the United Nations recognised the importance of the. X-ray crystallography is a tool used for determining the atomic and molecular structure of a crystal. The underlying principle is that the crystalline atoms cause a beam of X-rays to diffract into many specific directions (Fig. ).By measuring the angles and intensities of these diffracted beams, a crystallographer can produce a 3D picture of the density of electrons within the crystal.

The orthorhombic crystal phase of polyethylene has, like most polymer crystals, pronounced anisotropic elastic moduli along the three orthogonal crystallographic directions of the orthorhombic unit cell are at 23°C: GPa along a and GPa along b according to Sakaruda et al. (14) and GPa along c ( 16). A crystallographic database is a database specifically designed to store information about the structure of molecules and ls are solids having, in all three dimensions of space, a regularly repeating arrangement of atoms, ions, or are characterized by symmetry, morphology, and directionally dependent physical properties.A crystal structure describes the.   Crystallographic Data. Authors of manuscripts containing single-crystal XRD studies are strongly encouraged to provide powder XRD data (see below) on the bulk sample to confirm that the crystal structure is representative of the entire sample. A new approach to radical ring-opening polymerization is presented that employs a new thionolactone monomer to generate polymers with thioester-containing backbones. The use of a thiocarbonyl acceptor overcomes longstanding reactivity problems in the field to give complete ring-opening and quantitative incorporation into a variety of acrylate polymers.

  Thermal analysis, PXRD, and solid-state PLfigures; crystallographic parameters (bond lengths and bond angles); and hydrogen bonding table. Crystallographic data and report. CCDC nos. – and – contain the supplementary crystallographic data.   Crystallographic Database for Minerals and Their Structural Analogues. This searchable database, maintained by the Russian Foundation of Basic Research, includes entries ( unique mineral names). Each mineral can be searched by name, specification, crystal chemical formula, or crystal structure characteristics. We need them for various substances, e.g. rare earth salts, as well as some ceramics and coordination polymers. Therefore it would be very useful to know of a free electronic resource gathering these. Similar shear patterns obtained experimentally, and in simulations, allow consideration of the effect of crystallographic and geometric factors on deformation mechanisms. Deformation of single-crystal samples in the form of tetragonal prisms with {} and {} lateral faces and different height-to-width ratios was studied.