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Here, an attempt was made to establish the working mechanism of MHEC. For this purpose, its water retention effectiveness in cement paste and its dynamic viscosity in cement pore solution were measured. Furthermore, its potential adsorption on cement was probed via a specifically designed static filtration test. Finally, concentration-dependent hydrodynamic diameters of solved MHEC molecules, and their surface tension in cement pore solution were measured to establish the mechanism underlying the effectiveness of MHEC as water retention agent.

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Shijiazhuang Yongfeng wholesale rdp polymer powder cement

Another significant use of HPMC is in controlled-release formulationsmeilose hydroxypropyl methyl cellulose(hpmc). The polymer's ability to form a gel layer when exposed to an aqueous environment enables the creation of coatings that regulate the rate at which the API is released from the dosage form. This is particularly beneficial for drugs that require sustained release over an extended period to maintain therapeutic levels in the bloodstream or to reduce dosing frequency.

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Shijiazhuang Yongfeng wholesale rdp polymer powder cement