Maiuolo Loredana, Olivito Fabrizio, Algieri Vincenzo, Costanzo Paola, Jiritano Antonio, Tallarida Matteo Antonio, Tursi Antonio, Sposato Corradino, Feo Andrea, De Nino Antonio
Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende, CS, Italy.
ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Trisaia Research Centre, S.S. 106 Ionica, km 419 + 500, 75026 Rotondella, MT, Italy.
Polymers (Basel). 2021 Aug 20;13(16):2802. doi: 10.3390/polym13162802.
A novel series of bio-based polyurethane composite foams was prepared, employing a cellulose-derived polyol for chain extension and cellulose-citrate as a thickener additive. The utilized polyol was obtained from the reduction reaction of cellulose-derived bio-oil through the use of sodium borohydride and iodine. Primarily, we produced both rigid and flexible polyurethane foams through chain extension of the prepolymers. Secondly, we investigated the role of cellulose citrate as a polyurethane additive to improve the mechanical properties of the realized composite materials. The products were characterized by FT-IR spectroscopy and their morphologies were analysed by SEM. Mechanical tests were evaluated to open new perspectives towards different applications.
制备了一系列新型生物基聚氨酯复合泡沫材料，采用纤维素衍生多元醇进行扩链，并使用纤维素柠檬酸盐作为增稠添加剂。所使用的多元醇是通过硼氢化钠和碘对纤维素衍生生物油进行还原反应得到的。首先，通过预聚物的扩链制备了硬质和软质聚氨酯泡沫。其次，研究了纤维素柠檬酸盐作为聚氨酯添加剂对所制备复合材料力学性能的改善作用。通过傅里叶变换红外光谱对产物进行表征，并用扫描电子显微镜分析其形态。通过力学测试为不同应用开辟新的前景。
