Preparation and characterization of magnesium stearate, cobalt stearate, and copper stearate and their effects on poly(vinyl chloride) dehydrochlorination

Abstract

Preparation and characterization of pure metal soaps and investigation of their effects on poly(vinyl chloride) (PVC) dehydrochlorination were the objectives of the present study. Magnesium stearate (MgSt 2 ), cobalt stearate (CoSt 2 ), and copper stearate (CuSt 2 ) were prepared by a precipitation method. An aqueous sodium stearate (NaSt) solution was mixed at 500 rpm with respective metal salt solutions at 75

DBU-Catalyzed One-Pot Synthesis of Nearly Any Metal Salt of Fatty Acid (M-FA): A Library of Metal Precursors to Semiconductor Nanocrystal Synthesis

“…In each case, the successful formation M-FAs was confirmed by the presence of characteristic −COO – asymmetric (∼1510–1650 cm –1 ) in FTIR (Figures S5–S23). For some M-FAs, we observe two asymmetric vibrations which are attributed to differences in the nature of the M–O bonds in the compound. − These results show that the effect of coordination of the carboxylic ion with metal and the nature of the M–O bonding is reflected in COO – asymmetric frequencies. The characteristic CO stretching vibration at slightly above 1700 cm –1 because of free fatty acids (Figure S24) is absent in our samples (Figures S5–S23), confirming their high purity.…”

Enhanced thermal, safety and anti-hygroscopicity performance of core–shell ammonium perchlorate with a double coating layer

“…6b, for the B3 composite, in addition to the characteristic absorption peak of AP, the infrared absorption peaks at 2916 cm −1 , 2850 cm −1 , 1585 cm −1 , 1441 cm −1 and 720 cm −1 are attributed to the characteristic vibrations of -CH 2 asymmetric stretching, -CH 2 symmetric stretching, -COO − asymmetric stretching, -COO − symmetric stretching, and -CH 2 deformation, respectively. 28 The above results show that Cu(Pa) 2 is successfully coated on the surface of AP particles. It is not difficult to see from Fig.…”

Ultraviolet-Durable Superhydrophobic Nanocomposite Thin Films Based on Cobalt Stearate-Coated TiO2 Nanoparticles Combined with Polymethylhydrosiloxane

“…Interestingly, and on the contrary, Figure 1b-II shows two distinct peaks observed at 1410 and 1550 cm –1 corresponding to the carboxylate (−COOCo) symmetric and asymmetric stretching vibrations, respectively. 31 Another peak in between these two peaks appearing at 1446 cm –1 is ascribed to −CH 2 bending. 31,32 In the low-frequency range, a sharp absorption peak at 720 cm –1 is attributed to the in-plane rocking vibrations of −(CH 2 ) n long carbon chains in the CoSA molecules.…”

“…31 Another peak in between these two peaks appearing at 1446 cm –1 is ascribed to −CH 2 bending. 31,32 In the low-frequency range, a sharp absorption peak at 720 cm –1 is attributed to the in-plane rocking vibrations of −(CH 2 ) n long carbon chains in the CoSA molecules. 31 In brief, XRD, ATR–FTIR, and UV–vis results confirm that CoSA has been successfully synthesized.…”