In situ polymerization of mechanically reinforced, thermally healable graphene oxide/polyurethane composites based on Diels-Alder chemistry
文献类型：期刊论文
| 作者 | Li, Jinhui; Zhang, Guoping; Deng, Libo; Zhao, Songfang; Gao, Yongju; Jiang, Kun; Sun, Rong; Wong, Chingping |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2014 |
| 英文摘要 | Covalently bonded graphene oxide/polyurethane (GO/PU) composites with significant reinforcement and thermally healable properties were developed via in situ polymerization based on Diels–Alder (DA) chemistry. The PU prepolymer was prepared with GO, 4,4-diphenylmethane diisocyanate, and poly(tetramethylene glycol) and blocked by using furfuryl alcohol firstly. Then the prepolymer was cross-linked by using bifunctional maleimide via DA chemistry. SEM shows that the GO was dispersed uniformly in the PU matrix. The DA and retro-DA reactions were characterized by Fourier transform infrared spectroscopy and differential scanning calorimetry separately. Tensile tests showed that with the incorporation of 0.1 wt% of GO, the tensile modulus of GO/PU composites increased from 9.80 MPa to 21.95 MPa, and the tensile strength and elongation at break of the GO/PU composites increased by more than 367% and 210%, respectively. Furthermore, the composites had thermally healable ability which was inspected by using an atomic force microscope and the strain–stress test. The healing efficiency of 78% on average was achieved which was determined by the recovery of breaking stress and a healing mechanism was tentatively proposed. Therefore, the covalently bonded self-healing GO/PU composites could be used as smart materials and structural materials. |
| 收录类别 | SCI |
| 原文出处 | http://pubs.rsc.org/en/Content/ArticleLanding/2014/TA/C4TA04941A#!divAbstract |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/5467]  |
| 专题 | 深圳先进技术研究院_集成所 |
| 作者单位 | JOURNAL OF MATERIALS CHEMISTRY A |
| 推荐引用方式 GB/T 7714 | Li, Jinhui,Zhang, Guoping,Deng, Libo,et al. In situ polymerization of mechanically reinforced, thermally healable graphene oxide/polyurethane composites based on Diels-Alder chemistry[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014. |
| APA | Li, Jinhui.,Zhang, Guoping.,Deng, Libo.,Zhao, Songfang.,Gao, Yongju.,...&Wong, Chingping.(2014).In situ polymerization of mechanically reinforced, thermally healable graphene oxide/polyurethane composites based on Diels-Alder chemistry.JOURNAL OF MATERIALS CHEMISTRY A. |
| MLA | Li, Jinhui,et al."In situ polymerization of mechanically reinforced, thermally healable graphene oxide/polyurethane composites based on Diels-Alder chemistry".JOURNAL OF MATERIALS CHEMISTRY A (2014). |
入库方式： OAI收割
来源：深圳先进技术研究院
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