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Cyclic oligo[oxymethyleneoligo(oxyethylene)]s and linear poly[oxymethyleneoligo(oxyethylene)]s have been prepared by condensation of tri‐, tetra‐, penta‐ and hexaethylene glycols, including a number of samples not reported previously. The linear and cyclic products were characterised using nuclear magnetic resonance and gel‐permeation chromatography, and then studied using differential scanning calorimetry. Even‐odd effects in the values of the melting points and enthalpies of fusion of the samples are demonstrated.
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Nekoomanesh et al. (1990) studied this question.
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