Crystal forms of anhydrous calcium stearate derivable from calcium stearate monohydrate☆
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Cited by (14)
PVC/rice straw/SDBS-modified graphene oxide sustainable Nanocomposites: Melt mixing process and electrical insulation characteristics
2020, Composites Part A: Applied Science and ManufacturingCitation Excerpt :As listed in Table 1, calcium stearate and calcium carbonate are two ingredients used as the external lubricant and filler in the formulation of the PVC, respectively. Calcium stearate is known to have a characteristic peak at 2θ values around 19-20° [46–48]. This peak was observed at 19.76° in Fig. 5 e. No significant change in the position of this peak was observed through the incorporation of RS fibers, GO nanosheets or GOSDBS nanosheets.
Calcium carbonate nanocomposites
2012, Advances in Polymer Nanocomposites: Types and ApplicationsEffects of anticaking agents and storage conditions on the moisture sorption, caking, and flowability of deliquescent ingredients
2012, Food Research InternationalCitation Excerpt :Both calcium silicate and silicon dioxide absorbed moisture at RHs lower than the deliquescence points for the individual deliquescent ingredients and binary blends. Calcium stearate (Fig. 3C) absorbed less than 2% of its weight as RH increased up to 90% RH, and this is most likely due to the formation of a monohydrate (theoretical amount is 2.88%) (Vold, Hattiangdi, & Vold, 1949). Calcium stearate is known to form a hydrate with water due to the hydrogen bonding between water and the calcium atoms (Dubinsksaya, Polyakov, Suponitskii, Dement'eva, & Bykov, 2010).
Structure and surface coverage of water-based stearate coatings on calcium carbonate nanoparticles
2011, Journal of Colloid and Interface ScienceCitation Excerpt :The interaction of the long aliphatic chains results in their crystallization, and depending on thermal conditions the molecules arrange in different ways and exist in different crystalline forms. The thermal behavior and the polymorphism of crystalline calcium stearate have been well documented in detail by Vold et al. [20,21], Lelann and Bérar [22] and Garnier et al. [23] using experimental techniques such as X-ray diffraction, thermogravimetry and scanning calorimetry. They showed that the structure prevailing at room temperature is extremely sensitive to the presence of impurities, like water or glycerol, and to thermal treatment.
Nucleating effect of calcium stearate coated CaCO3 nanoparticles on polypropylene
2011, Journal of Colloid and Interface ScienceCitation Excerpt :The formation of a monolayer coating of calcium stearate on the CaCO3 nanoparticles was through a reaction between stearic acid and the calcium carbonate. Hydrated calcium stearate is the common form of the product when the reaction is performed in an aqueous medium [36–38]. Since the nanoparticles were coated in a solution of water and ethanol, a hydrated calcium stearate coating is expected.
Antiferromagnetism of quasi two-dimensional manganese stearate
1982, Solid State Communications
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This work is part of a project “Phase Studies of Greases” supported by the Office of Naval Research, Contract No. N6-onr-238-TO-2; NR057057.
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Present address: National Bureau of Standards, Washington, D. C.