A novel covalently/ionically co-crosslinked poly(biphenylene piperidinium) amphoteric membrane was designed for improved stability and efficiencies in vanadium redox flow batteries (VRFB). The amphoteric-side-chain structure provides an ultrahigh functionalization degree (4.93 mmolg) and unobstructed ion ...
Covalent/ionic co-crosslinking constructionA novel covalently/ionically co-crosslinked poly(biphenylene piperidinium) amphoteric membrane was designed for improved stability and efficiencies in vanadium redox flow batteries (VRFB). The amphoteric-side-chain structure provides an ultrahigh functionalization ...
今日知识点：Co-ordinate bond (or Dative covalent bond)例题 Q:When solid aluminium chloride is heated, Al2Cl6 is formed. Which bonding is present in Al2Cl6?A Covalent and co-ordinate (dative covalent)B Covalent only C Ionic and co-ordinate (dative covalent)D Ionic only 解析 ...
今日知识点:Co-ordinate bond (or Dative covalent bond) 例题 Q:When solid aluminium chloride is heated,Al2Cl6is formed. Which bonding is present inAl2Cl6? A Covalent and co-ordinate (dative covalent) B Covalent only C Ionic and co-ordinate (dative covalent) D Ionic only 解析 Co-ordinate ...
The surface-active agents can be anionic, cationic, non-ionic or polymeric in character and can be employed as emulsifying agents, wetting agents, suspending agents or for other purposes. Typical surface active agents include salts of alkyl sulphates, such as diethanolammonium lauryl sulphate; ...
For dipole–dipole interactions, E is proportional to 1/d3 (two fixed dipoles) or to 1/d6 (two freely rotating dipoles). For nonpolar–charge interactions, Eα 1/d4. For nondipolar–dipole or nonpolar–nonpolar interactions, Eα 1/d6. The covalent interaction is complicated and short ...
This is because the addition of hydrotalcite makes the metallic covalent bond in hydrotalcite stably bind with P in HS-BCF, contributing to the enhanced durability of P in HS-BCF. Notably, the fractional extraction results of P are consistent with the slow-release results in Fig. 5, which ...
Block polymers comprise in polymeric form, at least one block selected from hydrolyzable C2-C5 alkyl methacrylates, methacrylic acid and ionomers thereof and at least one other block of an an ionically copolymerizable monomer other than ... MCGRATH JAMES E,TUNG LU HO,LONG TIMOTHY E,... - ...
The Cohn process provides an excellent example, as it allows the inexpensive extraction of albumin from blood plasma by progressively changing the pH, ethanol concentration, temperature, ionic strength, and protein concentration. Albumin has the highest solubility and lowest isoelectric point of all the...
is the covalent connectivity of chain atoms and repeating units. This connectivity of hundreds to thousands of chain atoms sets the crystallization of polymers apart from other types of molecular systems. It is the underlying reason for the differences that are observed. For example, for the flexib...