Poly high heat crystal polymer

As mentioned earlier, poly(thioformaldehyde) is a highly crystalline polymer, and it has been shown to have a hexagonal crystal structure (14, 24). Thus, poly-(thioformaldehyde) obtained by irradiation of trithiane followed by heating has a hexagonal unit cell with a = 5.07 A and c=36.52 A crossed by one helical chain parallel to the c axis. The chain has an identity period of 36.52 A that comprises 17 —CH2S— units in 9 turns of the helix (14). Poly(thioformaldehyde) made by other methods crystallizes similarly (24). 

In Fig. 16 the heat-treated sampie(l) is obtained by heating poly-DSP crystals (a) up to 330°C at a scanning speed of 15°C/min. Then, the sample is cooled immediately to room temperature. The intrinsic viscosity of the original as-polymerized poly-DSP (2.1-2.9) is reduced (0.55-0.59) in sample (1). An X-ray pattern of sample (1) shows slight but definite differences when compared to that erf the original as-polymerized polymer and, in addition, the pattern agrees exactly with that ot the medium-sized polymer crystals (c), which are obtained by photopolymerization of DSP crystals upon irradiation with a xenon lamp for 50 min. DSC curves of sample (1) and polymer crystals (c) are also very similar to each other. From these results, it is concluded that the high... 

Poly(sulfazene) forms single crystals, that is, bundles of highly oriented fibers. The polymer behaves as a metal with respect to reflection, specific heat capacity, electrical conductivity, and magnetic susceptibility. The specific resistance is about 0.001 H cm at room temperature. The polymer is superconducting at 0.26 K. 

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