Some of the most commonly used processes for HPA production include
alkoxide process, thermal decomposition process, choline hydrolysis process, and modified Bayer process.
The primary OH groups on chitosan react with (CH3)3CO-K+, which is a basic compound, to form chitosan
alkoxide. In another reaction, the chitosan
alkoxide reacts with methacryloyl chloride to form chitosan methacrylate (Cts.met).
Dyeing characterisations of
alkoxide pre-treated polyester/acrylic fibres blend by the use of a cationic dye in one bath by two steps is also studied by El-Gabry and Bendak (2006).
This suggests the complete decomposition of organic residues derived from
alkoxide formation, as shown at Scheme 2.
These variables are the mechanism to disperse Ti
alkoxide species in an appropriate medium allowing the hydrolysis-condensation processes, dipping time, and number of coating cycles (dip + drying + calcination).
After heating the mixture of two ionic liquids and metal
alkoxide for 12 h under Ar atmosphere, selected P-IL gels with dispersed functionalized metal oxide nanoparticles were obtained.
The process involves hydrolysis and condensation reactions of metal
alkoxide precursors in a water-alcohol solution (sol), which lead to the formation of a 3D network (gel) [11].
Alkoxide material mostly soluble in alcohol, easily purified, and the synthesis of materials with high purity, and is in the state of low viscosity liquid mixing raw materials, chemical reactions in solution to the ceramic obtained uniform, fine and dense, can get highly uniform group divided into oxide coating, is conducive to the preparation of composite oxide.
Al., it is clear that on adding aqueous sodium hydroxide to the natural fibre, the ionisation of hydroxyl group found in fibre to
alkoxide group is achieved.
Ring opening relieves the small amount of ring strain that is present and creates a new
alkoxide nucleophile which can attack another lactide monomer, allowing the polymerization to proceed.