Used in the preparation of composite phase change materials? You may not know the role of TRIS!
Tris (hydroxymethyl) aminomethane (TRIS), as a common biological buffer, is not only widely used as a solvent for nucleic acids and proteins, but also one of the main components of protein electrophoresis buffers. It can also produce a variety of chemicals and medicines. The product is also an important intermediate for the preparation of surfactants, vulcanization accelerators and certain drugs. In addition to the above functions, TRIS can also be used to prepare composite phase change materials.
What is a phase change material?
Phase change material (PCM) refers to a material that changes its state with temperature and provides latent heat. When the physical state changes, the temperature of the material itself remains almost unchanged before the phase change is completed, forming a broad temperature platform, but the latent heat absorbed or released is quite large. PCM can be used almost indefinitely, and has the advantages of large latent heat, high energy storage density, and controllable phase transition temperature range. It is the selection of power battery thermal management system.
TRIS is a PCM
TRIS (CAS 77-86-1) is not only an important biological buffer, but also an important organic synthetic material. It is also a heat storage material with excellent heat storage performance, large latent heat value and good application performance. However, it has the following shortcomings: when heated to a solid-solid phase transition temperature or above, it will transform from a crystalline solid to a plastic crystallization, the solid vapor pressure is high, the volatilization loss is large, the stability is poor, the cost is high, and the equipment requirements are high. These problems need to be overcome before being applied to actual production.
How to overcome the shortcomings of TRIS (CAS 77-86-1)?
The researchers used the solution immersion method to fill TRIS into porous silica with a pore diameter of 15-100 nm and porous glass with a pore diameter of 12-100 nm to prepare composite energy storage materials. The morphology and heat storage performance of the obtained composite materials were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and differential scanning calorimetry (DSC). The space limitation of nanometer size affects the heat storage performance of TRIS, which makes the phase change temperature, phase change latent heat, supercooling, and thermal cycle performance of the composite phase change material significantly improved.
Phase change materials show broad application prospects in solar energy utilization, electronic devices, health care products, aerospace equipment, and building energy conservation. The current modified composite material solves the problems of using TRIS alone, and provides composite PCM with a wider temperature control range, more accurate heat storage capacity and more sensitive temperature response. With the development of science and technology, I believe that the future of TRIS There will be more applications in this area.
HEPES, as a zwitterionic buffer, increases the osmotic pressure of the cell culture system by increasing the concentration of solution ions, maintaining normal cell morphology and function, and improving cell survival rate. Widely used in cell culture, especially under specific conditions such as tumor cell culture, it is crucial to maintain cell growth and function.