基于槐糖脂的低聚物作为聚氨酯体系的多元醇组分

Sophorolipid-Based Oligomers as Polyol Components for Polyurethane Systems.

作者信息

Sonnabend Maresa, Aubin Suzanne G, Schmidt Annette M, Leimenstoll Marc C

机构信息

Macromolecular Chemistry and Polymer Technology, TH Köln, Kaiser-Wilhelm-Allee E39, 51368 Leverkusen, Germany.

Department of Physical Chemistry, University of Cologne, Greinstraße 4, 50939 Cologne, Germany.

出版信息

Polymers (Basel). 2021 Jun 18;13(12):2001. doi: 10.3390/polym13122001.

DOI:10.3390/polym13122001

PMID:34207206

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8234575/

Abstract

Due to reasons of sustainability and conservation of resources, polyurethane (PU)-based systems with preferably neutral carbon footprints are in increased focus of research and development. The proper design and development of bio-based polyols are of particular interest since such polyols may have special property profiles that allow the novel products to enter new applications. Sophorolipids (SL) represent a bio-based toolbox for polyol building blocks to yield diverse chemical products. For a reasonable evaluation of the potential for PU chemistry, however, further investigations in terms of synthesis, derivatization, reproducibility, and reactivity towards isocyanates are required. It was demonstrated that SL can act as crosslinker or as plasticizer in PU systems depending on employed stoichiometry. (-1)-hydroxyl fatty acids can be derived from SL and converted successively to polyester polyols and PU. Additionally, (-1)-hydroxyl fatty acid azides can be prepared indirectly from SL and converted to A/B type PU by Curtius rearrangement.

摘要

出于可持续性和资源保护的原因，具有优选中性碳足迹的聚氨酯（PU）基体系在研发中受到越来越多的关注。生物基多元醇的合理设计与开发尤为重要，因为此类多元醇可能具有特殊的性能特征，使新产品能够进入新的应用领域。槐糖脂（SL）是一种用于多元醇结构单元的生物基工具箱，可生产多种化学产品。然而，为了合理评估聚氨酯化学的潜力，需要在合成、衍生化、重现性以及与异氰酸酯的反应性方面进行进一步研究。结果表明，根据所采用的化学计量比，槐糖脂在聚氨酯体系中可作为交联剂或增塑剂。（-1）-羟基脂肪酸可从槐糖脂衍生而来，并依次转化为聚酯多元醇和聚氨酯。此外，（-1）-羟基脂肪酸叠氮化物可由槐糖脂间接制备，并通过库尔提斯重排转化为A/B型聚氨酯。