Polymer versus Monomer Action on the Growth and Habit Modification of Sodium Chloride Crystals

Abstract

We have investigated the use of polymers and monomers as habit modifiers and anticaking agents for sodium chloride. We show that amide functional groups cause the {111} faces to propagate on sodium chloride crystals and that polymer amides give a 1−2 orders of magnitude greater effect than the corresponding monomers on the habit modification of sodium chloride. We have also shown that the alcohol functional group does not have an effect on the surface or habit modification but that, when in a polymer form, leads to macrostep formation and acts as a nucleation inhibitor. The latter also holds true for other polymers that we have also tested. We have also found that there is no evidence of these polymers having anticaking abilities. Finally, we found that no amino acids, apart from glycine, have an effect on the morphology of NaCl crystals.

Creeping: an efficient way to determine the anticaking ability of additives for sodium chloride

“…A related compound is iron(III) citrate (Fecitrate), which has been previously mentioned in the literature as an anticaking agent regarding sodium chloride [13] . Both of these additives have habit modification effects on NaCl [9] but no proven anticaking ability. NTAA has been previously shown in the literature [11,12,14] , to have an effect on the crystallisation of sodium chloride.…”

“…For this, we examined the "creepability" of sodium chloride treated with a range of additives, both known and unknown anticaking agents, habit modifiers and even a pro-caking agent [9] . For this, we examined the "creepability" of sodium chloride treated with a range of additives, both known and unknown anticaking agents, habit modifiers and even a pro-caking agent [9] .…”

Triple Product Overall Water Splitting – An Environment Friendly and New Direction Water Splitting in Sea‐Water Mimicking Electrolyte

“…NaCl is an environmentally friendly useful byproduct; while it is an essential industrial material, and its application includes food preservative, de‐icing for winter road maintenance. Additionally, it includes one of the most important foods for human beings [62–64] …”

Continuous Production of Water‐Soluble Nanocrystals through Anti‐Solvent Precipitation in a Fluidic Device

“…A variety of additives, including glycine, formamide, cysteine, creatinine, and cadmium chloride, can be added to control the morphology of the resultant NaCl crystals. Shapes such as cubic, octahedral, and dodecahedral have all been achieved, but the crystals obtained using this method inevitably have a large particle size, typically on the microscale . To reduce the particle size down to the nanoscale, techniques such as spray drying, vapor shock cooling, and rapid water evaporation from aerosols have been utilized.…”

“…Shapes such as cubic, octahedral, and dodecahedral have all been achieved, but the crystals obtained using this method inevitably have a large particle size, typically on the microscale. [10][11][12] To reduce the particle size down to the nanoscale, techniques such as spray drying, vapor shock cooling, and rapid water evaporation from aerosols have been utilized. However, the products are typically characterized by a broad distribution in size.…”