Synthesis and characterization of novel soybean-oil-based elastomers with favorable processability and tunable properties

Wang, Zhao and Zhang, Xing and Wang, Runguo and Kang, Hailan and Qiao, Bo and Ma, Jun and Zhang, Liqun and Wang, Hao (2012) Synthesis and characterization of novel soybean-oil-based elastomers with favorable processability and tunable properties. Macromolecules, 45 (22). pp. 9010-9019. ISSN 0024-9297

Abstract

A new series of soybean-oil-based elastomers poly(epoxidized soybean oil-co-decamethylene diamine)(PESD) was synthesized by ring-opening polymerization from epoxidized soybean oil (ESO) and decamethylene diamine (DDA) in different molar ratios. The effect of the molar ratio on the structure and properties of PESD was identified by various methods. According to the results of Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (1H NMR) and thermogravimetry (TGA), the glycerol center of ESO was broken by ammonolysis as expected in the process of polymerization, which resulted in un-cross-linked elastomers with low glass transition temperatures (Tg) ranging from −30 to −17 °C. PESD-3(molar ratio of DDA to ESO is 2:1) was found to have the highest molecular weight and was most suitable for further processing. Then, PESD-3 was successfully cross-linked through succinic anhydride by a general rubber processing method to obtain a crosslinked bioelastomer. The mechanism of chain growth, ammonolysis of ester group, and cross-linking of PESD-3 was studied. The tensile strength of cross-linked PESD could be flexibly adjusted from 0.8 to 8.5 MPa by using different amounts of succinic anhydride without reinforcing fillers. The final bioelastomer possesses good damping property, low water absorption, and low degradation rate in phosphate buffer solution. These properties indicate potential engineering applications.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 26 Jun 2017 05:25
Last Modified: 27 Jun 2017 06:22
Uncontrolled Keywords: elastomers; soybean oil; polymerization; PESD; DDA;
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8606 Industrial Chemicals and Related Products > 860608 Rubber and Synthetic Resins
Identification Number or DOI: 10.1021/ma301938a
URI: http://eprints.usq.edu.au/id/eprint/31114

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