Thermoset polyurethanes from biobased and recycled components

被引：12

作者：

Mendiburu-Valor, Eider ^{[1
]}

Larraza, Izaskun ^{[1
]}

Echeverria-Altuna, Oihane ^{[2
]}

Harismendy, Isabel ^{[2
]}

Pena-Rodriguez, Cristina ^{[1
]}

Eceiza, Arantxa ^{[1
]}

机构：

[1] Univ Basque Country UPV EHU, Fac Engn Gipuzkoa, Chem & Environm Engn Dept, MaterialsTechnologiesResearch Grp, Plaza Europa 1, Donostia, SanSebastian 20018, Spain

[2] Ind & Mobil Unit, Mat & Mfg Proc, Donostia, SanSebastian 20009, Tecnalia, Spain

来源：

JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2023年 / 31卷 / 11期

关键词：

Thermoset polyurethane; Recycled BHET; Biobased polyol; Circularity; Glycolysis; POSTCONSUMER POLY(ETHYLENE-TEREPHTHALATE) BOTTLES; THERMOPLASTIC POLYURETHANES; WATERBORNE POLYURETHANES; RIGID POLYURETHANE; THERMAL-PROPERTIES; POLYOLS; GLYCOLYSIS; MORPHOLOGY; DENSITY; FOAMS;

D O I：

10.1007/s10924-023-02891-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, a recycled bis(2-hydroxyethyl) terephthalate (BHET) monomer, obtained by glycolysis of marine polyethylene terephthalate (PET) litter, and a biobased polyol derived from castor oil were used for the synthesis of thermoset polyurethanes (PUs). BHET was obtained in a closed reactor at 220 degrees C and a short reaction time of 30 min. Different PUs were synthesized, varying the BHET content, ranging from 0 to 21 wt% and varying the polyol content, obtaining a renewable carbon content between 23 and 43%. The PUs synthesized in this work, in which at least 40% of their components are renewable and recycled, showed an interesting combination of thermal, thermo-mechanical and mechanical properties. In addition, a preliminary chemical recycling study of the synthesized PUs was performed to evaluate their recyclability, wrapping the whole process within the circular economy. The obtained glycolyzed product was a single-phase viscous liquid consisting on polyol-rich and BHET-rich fractions, with contents in the range of those employed in the synthesis of PUs.

引用

页码：4946 / 4959

页数：14

共 65 条

[1] COMPARISON OF THERMAL TECHNIQUES FOR GLASS-TRANSITION MEASUREMENTS OF POLYSTYRENE AND CROSS-LINKED ACRYLIC POLYURETHANE FILMS [J].