Organic solvents processing

For organic solvent processes, the humidity of the air can also play a role in the product quality. One particular problem which can arise is that of condensation of water in the bed. In the vicinity of the nozzle, local cooling may be experienced due to solvent evaporation (Smith and Nienow, 1982), as discussed in Sec. 2.3. Asa consequence of this local cooling, the temperature... 

Lerin, LA Richetti, A Dallago, R Treichel, H Mazutti, MA Oliveira, JV Antunes, OAC Oestreicher, EG Oliveira, D. Enzymatic synthesis of ascorbylpalmitate in organic solvents process optimization and kinetic evaluation. Food and Bioprocess Technology, 2012, v. 5 (3), 1068-1076. 

The basic idea is to prepare first a precursor polymer that can be dissolved in water or in an organic solvent, processed to films by casting or any other physical procedure, and, finally, converted to the fully conjugated polymer via a thermal or chemical elimination step. 

Silk fibroin (SF) polymers consist of repetitive protein sequences and provide structural roles in cocoon formation, nest building, traps, web formation and egg protection. Silks are generally composted of P-sheet structures due to the dominance of hydrophobic domains consisting of short sidechain amino acids in the primary sequence. Silk is biocompatible, degradable and shows superior mechanical properties. Silk materials are amenable to aqueous or organic solvent processing and can be chemically modified to suit a wide range of biomedical applications [249-251]. 

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