Morphology modification in freshly Precipitated Calcium Carbonate particles using surfactant-polymer template

Kanoje, Bharatkumar; Patel, Dhvani A; Kuperkar, Ketan

doi:10.1016/j.matlet.2016.10.043

Cited by 28 publications

(9 citation statements)

References 13 publications

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“…Flower‐like bunch/cluster morphology was seen in the PVAc‐CTAB complex as PVAc adsorption does not reach the CTAB so effectively (Figure d) . Such resultant range of morphology is a typical behavior of the individual polymer which influences the dipole moment and exhibits a possible affinity towards the polar head group of the cationic surfactant molecule thereby limiting the growth/nucleation of the crystal ,. The overall rhombohedral aggregates (stack) which is equally distant from one another i. e., approximately periodic lattice is observed in F98 and F127.…”

Section: Figurementioning

confidence: 99%

Electrokinetic Potential, Thermal and Microscopic Investigation of Surfactant‐Polymer Templates on Precipitated Calcium Carbonate Morphology with Dynamic Simulation

Patel

2018

ChemistrySelect

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Morphology modification in the synthesized Precipitated Calcium Carbonate (PCC) is done using template made of surfactant: cetyltrimethylammonium bromide (CTAB) with different linear polymers: polyvinyl alcohol (PVA), polyvinyl acetate (PVAc), polyethylene glycol (PEG), and Pluronics® (tri‐block copolymers: PEO‐PPO‐PEO): F98 and F127. In this work, we report a systematic physico‐chemical characterization of such surfactant‐polymer templates. The idea of electrostatic interaction is conceived from electrokinetic/zeta potential (ζ) variation as a function of different polymers used in the surfactant‐polymer template. ζ value highlighted the plausible adsorbed potential at shear plane of PCC resulting in the varied structural changes which are evidently been supported by microscopic findings. Further, the thermal study provided quantitative and qualitative information of the decomposition due to mass loss. In addition, molecular simulations were performed to correlate the nano‐scale morphology changes occurring in PCC using Density Functional Theory (DFT)/B3LYP with basis set 3–21G method.

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Section: Figurementioning

confidence: 99%

Electrokinetic Potential, Thermal and Microscopic Investigation of Surfactant‐Polymer Templates on Precipitated Calcium Carbonate Morphology with Dynamic Simulation

Patel

2018

ChemistrySelect

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“…Limestone that has been widely used for the synthesis of CaCO 3 is calcite [7,8] and dolomite [6,9,12,13]. No researcher has tried the synthesis of limestone-based PCC with an ankerite phase.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Precipitated CaCO3 from Ankerite Prepared by Bubbling Method

Munawaroh¹,

Muharrami²,

Triwikantoro³

et al. 2019

KEG

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“…Reported studies indicate that the properties of nanoscale CaCO 3 particles are greatly affected and controlled in the presence of functional organic additives/modifiers if present in the crystallization solution. After an early demonstration of crystal growth by directional assembly, the subject was expanded to converge the crystallization process by selective adsorption on the crystal surface, thereby changing the overall crystal morphology and/or crystalline phase . Moreover, CaCO 3 can be obtained from oyster shell waste.…”

Section: Introductionmentioning

confidence: 99%

“…After an early demonstration of crystal growth by directional assembly, the subject was expanded to converge the crystallization process by selective adsorption on the crystal surface, thereby changing the overall crystal morphology and/or crystalline phase. 3 Moreover, CaCO 3 can be obtained from oyster shell waste.…”

Section: Introductionmentioning

confidence: 99%

Synergistic fire safety improvement between oyster shell powder and ammonium polyphosphate in TPU composites

Chen

Zhang

Wang

et al. 2019

Polymers for Advanced Techs

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In this article, oyster shell powder (OSP) was used as fire safety agent with ammonium polyphosphate (APP) in thermoplastic polyurethane (TPU) composites. The synergistic fire safety improvement between OSP and APP was intensively investigated using limiting oxygen index (LOI), UL‐94, smoke density test (SDT), and cone calorimeter test (CCT). There is a good synergistic effect of reducing the fire hazards when OSP was used with APP in TPU. The peak heat release rate (pHRR) of the sample with 2.0‐wt% OSP and 8.0‐wt% APP decreased to 86.8 kW/m2 from 175.7 kW/m2 of the sample with only 10.0‐wt% APP. The SDT results showed that the luminous flux of sample OSP2/APP8 was up to 28.9% at the end of experiment with flame, which was much higher than that of pure TPU (1.5%). The thermal stability and thermal decomposition of TPU composites were characterized by thermogravimetric analysis/Fourier infrared spectrum analysis (TG‐IR). The result revealed the inert gasses (including CO2 and water vapor) produced by the reaction between OSP and APP. A char formed on the surface of composites, hindered the flame spread, reduced the release of combustible gas, and restricted the precursor of smoke into combustion zone.

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Morphology modification in freshly Precipitated Calcium Carbonate particles using surfactant-polymer template

Cited by 28 publications

References 13 publications

Electrokinetic Potential, Thermal and Microscopic Investigation of Surfactant‐Polymer Templates on Precipitated Calcium Carbonate Morphology with Dynamic Simulation

Electrokinetic Potential, Thermal and Microscopic Investigation of Surfactant‐Polymer Templates on Precipitated Calcium Carbonate Morphology with Dynamic Simulation

Synthesis and Characterization of Precipitated CaCO3 from Ankerite Prepared by Bubbling Method

Synergistic fire safety improvement between oyster shell powder and ammonium polyphosphate in TPU composites

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