Alfa Chemistry Blog

  What Is Bipolar Membrane Electrodialysis? Bipolar membrane electrodialysis (BMED) is a system that combines electrodialysis (ED) and  bipolar membrane  (BPM), developed for its ability to convert anions and cations into acids and bases, respectively. BMED is composed of BPM,  cation exchange membrane  (CEM) and  anion exchange membrane  (AEM) in a certain arrangement, involving three basic membrane structures: Three-chamber BMED It contains CEM, AEM and BPM in each membrane repeating unit to achieve acid and alkali separation and recovery from salts. Two- chamber base-BMED It contains CEM and BPM in each membrane repeating unit for processing weak acid salts (organic acid salts) to obtain relatively pure bases. Two-chamber acid-BMED It contains AEM and BPM in each membrane repeating unit for converting weak base salts into relatively pure acids. How Bipolar Membrane Electrodialysis Works Under the action of a DC electric field, the bipolar membrane c...

  Liquid crystal (LC) building blocks are building blocks that use liquid crystals as raw materials to achieve specific functions and actually exist in the system. Liquid crystal is an intermediate substance between the crystalline state and the liquid state. It combines some characteristics of liquid and crystal, and shows some unique properties. Most liquid crystals are organic compounds and consist of long rod-shaped molecules. In a natural state, the long axes of these rod-shaped molecules are roughly parallel. Applications: The liquid crystal building module has the advantages of unique properties, abundant types, and relatively simple preparation method. It has a wide range of applications in the fields of optoelectronic materials, biology, medicine and environmental monitoring. Optoelectronic materials:  Liquid crystal building blocks are widely used in the field of optoelectronic materials. At present, liquid crystals are used as display materials in daily necessities...

  What is Ionic Liquids Synthesis? Ionic liquids are organic salts that exist in a liquid state at or below 100 degrees Celsius, often composed of large organic cations and organic or inorganic anions. They are known for their unique properties, including low vapor pressure, high thermal stability, and tunable solvation properties.  Ionic liquids synthesis  involves the preparation of these compounds through various methods such as the combination of appropriate cations and anions or the modification of existing ionic liquids to introduce specific functionalities. One common method for synthesizing ionic liquids is the neutralization reaction between a suitable organic base and an acid to form the desired salt. This can be followed by purification steps to remove any impurities and ensure the quality of the final product. Another approach involves the introduction of specific functional groups through chemical modification of existing ionic liquids, allowing for the custo...