A New cis-Caffeoyl Coumarin Glycoside from the Stem Barks of Fraxinus depauperata

Luo, Yanyan; Hu, Liqiu; Wang, Junhui; Liu, Tingwu; Sun, Lin; Han, Shujun; Shen, Jian; Si, Chuanling; Hu, Weicheng

doi:10.1007/s10600-018-2436-6

Cited by 3 publications

(1 citation statement)

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“…In recent years, graphene has received a tremendous amount of attention as a kind of special filler to produce polymer nanocomposites with high performance and novel functionalities for applications such as reinforced nanocomposites, electrically conductive composites, ultrasensitive sensors, and super‐capacitor electrodes . This is a result of the excellent physical, electrical, thermal, and optical properties of graphene . There are several methods of mass‐producing graphene, including liquid‐phase exfoliation of graphite , chemical vapor deposition on copper foils and films , and synthesis on silicon carbide .…”

Section: Introductionmentioning

confidence: 99%

Reinforced natural rubber nanocomposites using graphene oxide as a reinforcing agent and their in situ reduction into highly conductive materials

Zhang

Zhai²,

Dan

et al. 2016

Polymer Composites

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In this study, a new method of fabricating conductive NR nanocomposites was proposed. Graphene oxide (GO) was obtained through oxidization and exfoliation of graphite and was employed as a reinforcing nanofiller for natural rubber (NR). GO/NR nanocomposites with different concentrations of GO were prepared by a latex mixing and casting method. The nanocomposites were characterized by Raman spectroscopy and TEM, and the thermal and mechanical properties were evaluated by TGA, DSC, tensile testing, and DMA. The results showed that the nanocomposite showed a segregated "weblike" morphology. The addition of GO slightly decreased the glass transition temperature of NR and improved the thermal stability of the material. The tensile strength and storage modulus of the nanocomposites significantly increased with the GO contents, indicating GO had a strong reinforcing tendency on NR. The electrically conductive reduced graphene oxide (r-GO)/NR nanocomposites were obtained by immersing GO/NR nanocomposites in a hydroiodic (HI) acid aqueous solution for reduction. HI acid can efficiently reduce the GO into graphene in 2 h at 608C. The volumetric electrical conductivity of the nanocomposites increased with the r-GO contents, and the conductivity of the 5% r-GO/NR nanocomposite was as high as 1 S/m, which showed its promising application as stretchable electrical conductors and elastomers.

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