Solution crystallization of polyoxymethylene(POM)/poly(ethylene oxide)(PEO) (50/50) blend with different molecular weight(

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of PEO

using hexafluoroisopropanol (HFIP) as common solvent

was studied by differential scanning calorimeter(DSC)

scanning electron spectroscopy(SEM) and infrared spectra (IR).It indicated that the lower

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of PEO

the stronger interruption between POM and PEO in the crystallization. When

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of PEO was 4×10

3

POM formed partial imperfect crystals

thus showing obvious double melting peaks in the blend. SEM results showed that no obvious phase separation occurred in the POM/PEO blend with different

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of PEO and it was easier for the blend with lower

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of PEO to form regular spherulites. It was expected that the interpenetrated structure was formed in the POM/PEO 50/50 blend through solution crystallization.