Preparation of magnesium carbonate nanoparticles encapsulated by nanocomposite material derived from fluoroalkyl end-capped vinyltrimethoxysilane oligomer – Application to the surface modification of glass and poly(methyl methacrylate)

Oikawa, Yuri; Saito, Tomoya; Idomukai, Satsuki; Tanaka, Tomoko; Nishida, Masakazu; Sawada, Hideo

doi:10.1016/j.jfluchem.2015.02.003

Cited by 6 publications

(2 citation statements)

References 55 publications

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“…The torque was increased as expected due to the particle and polymer chain interactions, which were already mentioned in the former section. Moreover, the addition of MgCO 3 exhibits a plateau relationship after the torque reaches the maximum value [ 17 ]. This behavior indicated that the crosslinking structure was so stable that it was able to withstand the degradation effect at the elevated temperature over curing.…”

Section: Resultsmentioning

confidence: 99%

Natural Rigid and Hard Plastic Fabricated from Elastomeric Degradation of Natural Rubber Composite with Ultra-High Magnesium Carbonate Content

2023

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It is known that natural rubber is an elastomeric polymer; hence, the main uses are usually limited to soft applications. For the process to reverse the elastomeric effect of natural rubber to obtain rigid plastic from a natural material, an ultra-high amount of magnesium carbonate particles was added to the natural rubber to study the effect of magnesium carbonate in the reduction of elastomeric properties. High magnesium carbonate ratios of 80–180 phr were mixed in the natural rubber in the latex form to maximize the mixing capability since it was more difficult to achieve these mixture ratios with only two roll mill or extruder processes. The more magnesium carbonate powders in the composite, the higher torques were measured from the moving die rheometer (MDR) test. The powder was thoroughly mixed inside the composite, which was observed from energy-dispersive X-ray spectrometer (EDX) mapping; however, the matrix of composites was filled with porosity due to the CO2 formation when latex with magnesium carbonate was assimilated with acid during the vulcanization process. The strength of the composite dropped, and the elongations were shortened. On the other hand, the hardness of composites was drastically increased. The composite lost the elastomeric property, and the hard natural rubber composites were obtained.

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Section: Resultsmentioning

confidence: 99%

Natural Rigid and Hard Plastic Fabricated from Elastomeric Degradation of Natural Rubber Composite with Ultra-High Magnesium Carbonate Content

2023

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“…Typically, from the DSC analysis (Figure 2), the decomposition of adsorbed water ensue around 100 o C followed by the degradation of citric acid about the temperature of 140 o C until 170 o C [22]. However, as the temperature increased up to more than 250 o C, another endothermic peak due to the decomposition of MgCO3 [25]. The melting point of the composites are lower than the melting point of MgCO3 which normally occur at 350 o C indicative of local structural change phenomenon through disorder rearrangement when alumina was added into the composites which is supported by the previous studies where the decomposition temperature or the melting point of PEG-Mg(CH3COO)2-CeO2 composites are much lower than pure PEG after the introduction of cerium oxide [26].…”

Section: Dsc and Tga Analysesmentioning

confidence: 99%

Sol-gel Synthesis and Characterization of MgCO3 – Al2O3 Composite Solid Electrolytes

Sulaiman¹,

Kadir²,

Mat³

2021

JNMES

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Composite solid electrolytes in the system (1-x)MgCO3 – xAl2O3 with x = 0.1 - 0.9 were synthesized by a sol-gel method and analyzed by X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis, scanning electron microscopy, energy dispersive X-ray, Fourier transform infrared spectroscopy and alternating current impedance spectroscopy for the determination of the phases and crystallinity, thermal stability, surface morphology, elemental composition, chemical bonding and conductivity, respectively. The composites show that, the crystallinity of the composites decreases as the amount of Al2O3 increase which could lead to higher conductivity. The thermal decomposition studies also indicate that the melting and/or decomposition of the composites occur at lower temperature than the pure MgCO3 which normally take place at 350 oC. The composite with the ratio of x = 0.9 give the highest conductivity value in order of 10-4 S.cm-1 as compared to other ratio due to effective transfer of charge carriers in addition to the formation of MgO-Mg2+ species at the interface.

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Heterocyclic Grafting Functionalization of Silica Nanoparticles: Fabrication, Morphological Investigation and Application for PVA Nanocomposites

Hatami

Ahmadipour

Asghari

2017

J Inorg Organomet Polym

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Preparation of magnesium carbonate nanoparticles encapsulated by nanocomposite material derived from fluoroalkyl end-capped vinyltrimethoxysilane oligomer – Application to the surface modification of glass and poly(methyl methacrylate)

Cited by 6 publications

References 55 publications

Natural Rigid and Hard Plastic Fabricated from Elastomeric Degradation of Natural Rubber Composite with Ultra-High Magnesium Carbonate Content

Natural Rigid and Hard Plastic Fabricated from Elastomeric Degradation of Natural Rubber Composite with Ultra-High Magnesium Carbonate Content

Sol-gel Synthesis and Characterization of MgCO3 – Al2O3 Composite Solid Electrolytes

Heterocyclic Grafting Functionalization of Silica Nanoparticles: Fabrication, Morphological Investigation and Application for PVA Nanocomposites

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