Related Experiment Video
Updated: Mar 10, 2026
13:21
Graphene Coatings for Biomedical Implants
Published on: March 1, 2013
21.8K
Graphene-Montmorillonite Composite Sponge for Safe and Effective Hemostasis.
Guofeng Li1, Kecheng Quan1, Yuping Liang1
1Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology , Beijing 100029, People's Republic of China.
ACS Applied Materials & Interfaces
|December 10, 2016
Summary
A novel graphene-Montmorillonite (MMT) composite sponge effectively stops bleeding without causing blood clots. This biocompatible hemostat offers a promising new approach for trauma therapy.
Area of Science:
- Biomaterials Science
- Nanotechnology
- Materials Chemistry
Background:
- Montmorillonite (MMT) is a potent natural hemostat but poses risks like thrombosis.
- Managing MMT release and mitigating side effects remain significant challenges for its clinical use.
Purpose of the Study:
- To develop a safe and effective hemostatic material by integrating MMT with graphene.
- To investigate the hemostatic performance and biocompatibility of the novel composite.
Main Methods:
- Synthesized a graphene-MMT composite sponge (GMCS) using a hydrothermal reaction.
- Evaluated hemostatic efficacy in rabbit artery injury models.
- Assessed thrombus formation using computed tomography angiography and biocompatibility via cytotoxicity assays.
Main Results:
- The GMCS demonstrated rapid hemostasis, stopping bleeding in approximately 85 seconds.
- Computed tomography angiography confirmed no thrombus or blood clot formation in vessels.
- Cytotoxicity assays indicated good biocompatibility of the GMCS.
Conclusions:
- The developed GMCS effectively halts bleeding while preventing adverse thrombotic events.
- Graphene's 2D structure enhances hemostatic performance by optimizing blood distribution.
- This composite sponge presents a promising advancement for clay-based hemostats in trauma treatment.
