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  1. r. f. storey et al., polyurethane chemistry and technology, wiley, 2018
  2. t. h. choe et al., "performance evaluation of polymeric mdi in flexible foams", journal of applied polymer science, 2020
  3. a. k. mohanty et al., "green polyurethanes: from synthesis to applications", acs sustainable chem. eng., 2021

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