Crystal structure of isotactic polystyrene

@article{Natta1960CrystalSO,
  title={Crystal structure of isotactic polystyrene},
  author={Giulio Natta and Paolo Corradini and Ivaro W. Bassi},
  journal={Il Nuovo Cimento (1955-1965)},
  year={1960},
  volume={15},
  pages={68-82}
}
ABSTRACT The crystal structure of isotactic polystyrene is described in this paper. The unit cell as determined from the X-ray diffraction spectra of oriented samples is rhombohedral, and its constants referred to hexagonal axes are: a = 21.9 ± 0.1 A , c = 6.65 ± 0.05 A ( chain axis ) Z = 18 ; Space group R 3 c or R 3 ¯ c . 
View on Springer
126 Citations
Background Citations
3

126 Citations

Citation Type

Citation Type

Crystal structure of isotactic polyvinylethylsilane
Abstract Isotactic polyvinylethylsilane crystalizes in a rhombohedral unit cell whose constants referred to hexagonal axes are: a = b = 21·60 ± 0·20 A , c = 6·50 ± 0·05 A (fibre axis), space group… Expand
Isotactic poly(p-fluorostyrene): X-ray structure determination
Abstract Using as a starting point the atomic positions determined by potential energy calculations, the crystal structure of isotactic poly(p-fluorostyrene) has been determined from X-ray… Expand
Extended-chain structure for isotactic polystyrene: additional X-ray diffraction and calorimetric results
Abstract The recently discovered extended-chain structure in isotatic polystyrene gels opens new horizons on the stereochemistry of the polyolefins and molecular organization in polymeric gels. New… Expand
Direct lattice imageing in single crystals of isotatic polystyrene
Abstract Lattice lines with 1.1 nm and 0.55 nm spacings were resolved in isotactic polystyrene (i-PS) single crystals using a conventional transmission electron microscope, equipped for low dose… Expand
Conformation analysis of isotactic polystyrene
The potential conformational energy of isotactic polystyrene has been calculated as a function of the angles of rotation around the three non-equivalent bonds in the monomeric unit. The calculations… Expand
Crystal structure of isotactic poly (vinyl methyl ether)
The crystal structure of isotactic poly(vinyl methyl ether) has been defined on the basis of x-ray fiber spectra. Isotactic poly(vinyl methyl ether) crystallizes in a rhombohedral unit cell whose… Expand
Morphology and structure of syndiotactic polystyrene
Abstract Syndiotactic polystyrene with a high degree of stereoregularity and crystallinity has been prepared in the form of thin, electron-transmissible films. The morphology has been studied by… Expand
Geometrical and energetical feasibility of a highly extended chain conformation for isotactic polystyrene
Abstract Highly extended, four-atom helices with h = 5.1 A and t = 60° are geometrically feasible for a vinyl polymer. The energetical feasibility for the case of isotactic polystyrene (in… Expand
Up/down ordering phenomena in crystalline isotactic polystyrene as a function of thermal treatment
Abstract The dependence of up/down degree of order in the crystalline structure of isotactic polystyrene on the thermal history of the samples is discussed, on the basis of the variation of the… Expand
The crystal structure of 1, 2 isotactic poly-4-methyl-pentadiene-1, 3
Abstract The crystal structure of 1, 2 isotactic poly-4-methyl pentadiene crystallized in modification II has been studied by X-ray diffraction spectra of stretched fibres. The conformation of the… Expand
...
1
2
3
4
5
...

References

SHOWING 1-8 OF 8 REFERENCES
General considerations on the structure of crystalline polyhydrocarbons
Publisher Summary This chapter discusses some general principles leading to the determination of the shape and mode of packing of macromolecules in the crystals. There are different types of… Expand
The Employment of contoured Graphs of Structure-Factor in Crystal Analysis
§ 1. In a recent note in Nature), attention was drawn to the advantages of using contoured graphs of structure-factor in the X-ray analysis of crystals. Let us suppose that Λ\Ό are examining the… Expand
Über die volumetrische bestimmung des kristallinitätsgrades isotaktischer polystyrole
Die dilatometrische Kurve und volumetrische. Vergleichsdaten eines isotaktischen und eines ataktischen Polystyrols wurden bestimmt. Durch Extrapolierung der experimentellen Werte und durch Anwendung… Expand
Crystal structure of isotactic poly-alpha-butene
Chain confiuguration in crystalline vinyl polymers
Kristallstruktur des isotaktischen polystyrols
A statistical structure for crystalline rubber
Internationale Tabellen zur Bestimmung von Kristallstrukturen. 2 Bände. Gebr. Bornträger, Berlin 1935. 692 S. 547 Abb. Preis geh. RM 33.—, geb. RM 40.—