Several bio-based polyhydroxyls are successfully synthesized by using succinic acid, obtained via Arundo donax fermentation and characterized by ¹H NMR, GPC, and FT-IR analyses. Furthermore, the bio-based polyhydroxyls, consisting of a wide spectrum of compounds in terms of chemical structure and molecular weight, are used as substitute of conventional polyol in the formulations of Polyurethane and random Urethane-Amide Copolymer bio-based foams. The influence of both amount and typology of bio-based polyhydroxyls on bio-based foam properties is investigated through kinetic analysis, thermo-mechanical characterization, and morphological analysis. The results highlight that the replacement of conventional polyol with the bio-based polyester polyhydroxyls affects the foaming process and consequently the final properties of the free-foamed materials. In particular, the compressive modulus increases by about 140% for a bio-based polyhydroxyl content of 50 wt% together with an increase in foam density. A further increase of these adducts results in a decrease of the glass transition temperature and the mechanical performances. However, the experimental results demonstrate the potentiality of these bio-based foams as commodity in several applications.

通过使用琥珀酸成功地合成了几种生物基多羟基化合物，琥珀酸是通过Arundo donax发酵获得的，并通过¹ H NMR，GPC和FT-IR分析进行了表征。此外，就化学结构和分子量而言，由多种化合物组成的生物基多羟基化合物在聚氨酯和无规氨基甲酸酯-酰胺共聚物生物基泡沫的配方中用作常规多元醇的替代品。两者数量和类型学的影响，生物基础的polyhydroxyls上生物通过动力学分析，热机械表征和形态分析来研究基于泡沫的泡沫材料的性能。结果表明，用生物基聚酯多羟基化合物代替常规多元醇会影响发泡过程，从而影响自由发泡材料的最终性能。特别地，对于50wt％的生物基多羟基含量，压缩模量增加约140％，同时泡沫密度增加。这些加合物的进一步增加导致玻璃化转变温度和机械性能的降低。但是，实验结果证明了这些生物基泡沫在多种应用中作为商品的潜力。