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  1. h. ulrich, polyurethane: chemistry, processing and applications, hanser publishers, 1993.
  2. j. friedrich et al., ¡°effect of silicone surfactants on cell structure in flexible polyurethane foams,¡± journal of cellular plastics, 2018.
  3. t. tanaka et al., ¡°fluorinated surfactants for fine cell control in pu foams,¡± polymer engineering & science, 2020.

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