A novel thermoplastic elastomer from double CO2-Route oligomers
| Autor: | Shuxian Ye, Junqiao Jiang, Dongmei Han, Min Xiao, Shuanjin Wang, Jiaxiang Qin, Youji Tao, Jiaxin Liang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polymers and Plastics Materials Science (miscellaneous) Dispersity Industrial and Manufacturing Engineering lcsh:TP1080-1185 Amorphous solid Shape-memory polymer chemistry.chemical_compound Crystallinity lcsh:Polymers and polymer manufacture chemistry Chemical engineering lcsh:TA1-2040 Propylene carbonate Chemical Engineering (miscellaneous) Molecule Thermoplastic elastomer lcsh:Engineering (General). Civil engineering (General) Polyurea |
| Zdroj: | Advanced Industrial and Engineering Polymer Research, Vol 2, Iss 4, Pp 186-195 (2019) |
| ISSN: | 2542-5048 |
| DOI: | 10.1016/j.aiepr.2019.09.007 |
| Popis: | As carbon dioxide (CO2) is an inexpensive, abundant, sustainable and green carbonyl resource, its utilization to produce value-added chemicals and polymeric materials has attracted much more attention. In this work, a novel CO2 route polyurea (PUa) was synthesized. The chemical composition, molecular structure, and aggregation structure of polyurea has been confirmed by 1H-NMR, HMBC-NMR, DSC, TG, MALDI-TOF MS and POM. The result from POM shows that polyurea gives out a spherulitic morphology, exhibited a typical black cross pattern formed by many concentric circles with different light and shade. Moreover, shape memory polymers of polyurea-multiblock-poly(propylene carbonate) (PUa-mb-PPCs) with a Mn nearly 4.72 × 104 Da and a polydispersity index (PDI) of 1.51–1.64 were synthesized by chain extension of the polyurea with CO2 derived poly(propylene carbonate) diols (PPC-OH). The PUa-mb-PPCs possess high strength and elasticity because the crystallinity formed by polyurea and amorphous region from PPC. Notably, excellent shape memory effect (SME) is observed in shape thermomechanical testing. The present work provides a simple and renewable process for the synthesis of CO2-copolymer with multiblock structure, opening a new route for preparation of functional polymeric materials from carbon dioxide conversion. Keywords: Carbon dioxide utilization, Thermoplastic elastomer, PUa-mb-PPC, Polyurea, Shape memory effect |
| Databáze: | OpenAIRE |
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