Details

Autor(en) / Beteiligte

• Cui, Bin
• Wu, Qing-Yun
• Gu, Lin
• Shen, Liang
• Yu, Hai-bin

Titel

High Performance Bio-based Polyurethane Elastomers： Effect of Different Soft and Hard Segments

Ist Teil von

• Chinese journal of polymer science, 2016-07, Vol.34 (7), p.901-909

Ort / Verlag

Beijing: Chinese Chemical Society and Institute of Chemistry, CAS

Erscheinungsjahr

2016

Quelle

SpringerLink

Beschreibungen/Notizen

• In this work, a series of high performance bio-based polyurethanes（bio-PUs） were synthesized from polylactide（PLA）-based diols, different diisocyanates（TDI, MDI, HDI, IPDI） and chain extender 1,4-butanediol, in which different soft and hard segments are used to adjust their transition temperatures and mechanical properties. Poly（lactide-co-caprolactone）copolymer diols（co-PLAols） instead of PLA diols as the soft segment improved the thermal stability and mechanical properties of the synthesized bio-PUs. Among them, MDI-based bio-PUs have the highest T_g（43.8 °C）, tensile strength（23.5 MPa） and modulus（380.8 MPa）, while HDI-based bio-PUs have the lowest T_g（21.4 °C） and highest elongation at break（580%）. Especially, the bio-PUs synthesized from co-PLAols and MDI demonstrate better mechanical properties,closed to petroleum-based commodities. Furthermore, the obtained bio-PUs display good shape memory properties at body temperature and cytocompatibility. Therefore, these bio-PUs are promising for applications in biomedical fields.