Abstract：
Non-isocyanate polyurethanes (NIPUs) based on biobased polyamines and polycarbonates are a sustainable alternative to conventional polyurethanes (PU). This article discloses a novel method to control the crosslinking density of fully biobased isocyanate-free polyurethanes, synthesized from triglycerides carbonated previously in scCO2 and different diamines, such as ethylenediamine (EDA), hexamethylenediamine (HMDA) and PriamineTM-1075 (derived from a dimerized fatty acid). As capping substances, water or bioalcohols are used in such a way that the crosslinking density can be adjusted to suit the requirements of the intended application. An optimization of the NIPU synthesis procedure is firstly carried out, establishing the polymerization kinetics and proposing optimal conditions set for the synthesis of the NIPUs. Then, the influence of the partial blocking of the active polymerization sites of the carbonated soybean oil (CSBO), using monofunctional amines, on the physical properties of the NIPUS is explored. Finally, the synthesis of fully biobased NIPUs with a targeted crosslinking density is achieved using hybrid NIPUs, employing partially carbonated oil and H2O or ethanol as blockers to achieve the desired physical properties in a very precise manner.
摘要：
基于生物基多胺和聚碳酸酯的非异氰酸酯聚氨酯(NIPU)是常规聚氨酯(PU)的可持续替代品。本文公开了一种控制完全不含生物基异氰酸酯的聚氨酯的交联密度的新方法，由先前在scCO2和不同二胺中碳酸化的甘油三酯合成，如乙二胺（EDA），六亚甲基二胺(HMDA)和PriamineTM-1075(衍生自二聚脂肪酸)。作为封顶物质，水或生物醇以这样的方式使用,使得可以调节交联密度以适合预期应用的要求。首先对NIPU合成程序进行了优化，建立聚合动力学并提出合成NIPU的最佳条件。然后，碳酸大豆油（CSBO）的活性聚合位点的部分阻断的影响，使用单官能胺，对NIPUS的物理性质进行了探讨。最后,使用混合NIPU实现具有目标交联密度的完全生物基NIPU的合成，使用部分碳酸化油和H2O或乙醇作为阻断剂以非常精确的方式获得所需的物理性质。
