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Methacrylic Acid - Springer Nature

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Last Updated: 23 April 2022

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Kinetics and equilibrium study of the adsorption of silver ions by polymeric composites containing zeolite and methacrylic acid

For this reason, we synthesized two polymeric composites of ethylene glycol dimethacrylate, methacrylic acid, and various amounts of zeolite in the present study, using a BPO-DMA initiator system at room temperature. Adsorption was performed by batch adsorption to determine the effect of polymeric composites on silver ion adsorption at various pH levels, contact time, initial Ag concentrations, and adsorbent dosage. Both isotherm models performed well in this test when we tested the most commonly used, Langmuir and Freundlich isotherm models in the adsorption process. The adsorption of Ag on polymeric composites could be of ion exchange type, according to the adsorption results obtained from this model, which indicated that the adsorption of Ag on polymeric composites could be of ion exchange type. The adsorption data were also used for the Dubinin-Radushkevich isotherm model, and the adsorption energies derived from this model indicated that the adsorption of Ag on polymer adsorption of adsorption of Ag on polymer composite composites could be of ion exchange type. Ag sorption rates onto the polymeric composites was very fast in the first 60 min and then reached adsorption equilibrium after 100 min, according to time dependency experiments.

Source link: https://doi.org/10.1007/s13738-021-02410-w


The role of poly (ethylene-co-methacrylic acid) (EMAA) on cure kinetics and thermomechanical properties of epoxy

Polymers with self-healing capability can be produced by adding thermoplastic to thermosetting matrix systems, which has been a highly effective way to produce polymers with self-healing capabilities. In this research, the wickwicking procedure of diglycidyl ether's bisphenol A/triethylene-tetramine epoxy system modified with a poly thermoplastic healing agent was investigated. No apparent correlation was found between Tg and mass fraction of added EMAA in the case of samples with particle size 425 mm. The mass fraction and particle size of larger particles can also influence the curing reactions, where results indicate deceleration when smaller particles are introduced in larger fractions and acceleration with increasing mass fractions and acceleration. All experimental results could be related to the autocatalytic Sourour and Kamal model with good agreement; the model was able to predict the effects of thermoplastic addition in various particle sizes and mass fractions.

Source link: https://doi.org/10.1007/s00289-021-03650-9


Development of the hydrophilic additive by suspension copolymerisation of methacrylic acid with isodecyl methacrylate for easy-to-clean coatings

The additives were synthed from the suspension copolymerisation of hydrophilic methacrylic acid with hydrophobic isodecyl methacrylate monomer at a different weight ratio. The prepared additive p was described by Fourier transform infrared spectroscopy, water absorption, differential scanning calorimetry, and dynamic light scattering. SEM, contact angle, and stain-test results were used to determine the additive dispersion, hydrophilicity, and easy-cleanability of p incorporated binder. The 0. 5 phr p. Integrated coating sample shows a more hydrophilic and easy-cleaning property than others.

Source link: https://doi.org/10.1007/s00289-022-04193-3

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions