Fully biobased triblock copolyesters from l-lactide and sulfur-containing castor oil derivatives: Preparation, oxidation and characterization
作者:Z. Beyazkilic、G. Lligadas、J.C. Ronda、M. Galià、V. Cádiz
DOI:10.1016/j.polymer.2015.05.013
日期:2015.6
fully biobased ABA triblock copolyesters from PLA and castor oil derivatives are described. The synthetic strategy uses a dihydroxy telechelic polyester as a macroinitiator for the ring opening polymerization of l-lactide. This macroinitiator was obtained from a sulfur-containing hydroxyacid derivative of 10-undecenoic acid, which undergoes self-polycondensation with low amounts of biobased 1,4-butanediol
描述了由PLA和蓖麻油衍生物合成的全生物基ABA三嵌段共聚酯的合成和表征。合成策略使用二羟基远螯聚酯作为大分子引发剂,以进行1的开环聚合。-丙交酯。该大分子引发剂是由10-十一碳烯酸的含硫羟基酸衍生物制得的,该衍生物通过少量的生物基1,4-丁二醇进行自缩聚反应,从而能够得到两种不同重量的预聚物。制备了两个系列的具有不同PLA含量百分比的三嵌段共聚酯,并将所得的带有硫醚的共聚酯氧化为聚砜。相对于PLA均聚物,这两个系列的共聚酯均显示出改善的热稳定性,结晶度的降低和相似的亲水性。