Preparation and characterization of diatomite and hydroxyapatite reinforced porous polyurethane foam biocomposites.

Sci Rep · 2020 · PMC7413266 · PMID 32764640

Europe PMC DOI

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quite significantno p-value reported

For the synthesis of polyurethane foam, the FTIR peak at 2271 cm −1 is quite significant because it corresponds to the free, unreacted isocyanate peak in PU structure 49 .

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