Polyketone crystal structure

Chatani, Y., T. Tazikawa, S. Mcrahashi, Y. Sakata, and Y. Nishimura Crystal structure of polyketone (1 1 ethylene/carbon monoxide) copolymer. J. Polymer Sci. 55, 811 (1961). 

The polyketones may be structurally characterized by IR and NMR spectroscopy, as well as by X-ray crystal structure determinations. Saturated ketones have a characteristic strong IR absorption band at 1715 cm-1, and this band was observed for the... 

The s mthesis of aromatic polyketone particles has been carried out [336] by means of precipitation polycondensation and is carried out at very the low concentration of monomer [0, 05 mol/liter]. The polyketones are produced from bisphenoxybenzophenone (0,005 mole) or isophlha-loylchloride (0.005 mole) in 100 milliliters of 1,2-dichloroethane. Some of obtained particles have highly organized the needle-shaped structure (the whisker crystals). The use of isophthaloyl instead of terephthaloyl at the same low concentration of monomer results in formation of additionally globular particles, the binders of strip structures gives rise. The average size of needle-shaped particles is 1-5 mm in width and 150-250 mm in length. 

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