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The working mechanism of methyl hydroxyethyl cellulose, MHEC (Mw = 2.5 · 105 g/mol, DSmethyl = 1.81, MShydroxyethyl = 0.15) as water retention agent in cement was investigated. First, the hydrocolloid was characterized and its performance as non-ionic water retention agent was determined employing the filter paper test. Also, water sorption and swelling of individual MHEC fibers under conditions of different humidities were monitored by ESEM imaging. Second, its working mechanism was established. It was found that at low dosages, MHEC achieves water retention by intramolecular sorption of water and concomitant swelling while at higher dosages, MHEC molecules agglomerate into large hydrocolloidal microgel particles (d > 1 μm) which effectively plug the pores in the mortar matrix. MHEC association was evidenced by an exponential increase in solution viscosity as concentration rises, a strong increase in the hydrodynamic diameter of solved MHEC molecules, and a noticeable reduction of surface tension.

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construct grade hpmc


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  • HPMC is a non-toxic, water-soluble polymer that imparts several advantageous characteristics to adhesive formulations. Its ability to form strong hydrogen bonds with other materials makes it an ideal thickener, providing the necessary viscosity to ensure proper spreadability and adhesion. In addition, HPMC contributes to the adhesive's stability, preventing premature drying and ensuring a consistent bond strength over time.
  • Application of hydroxypropyl methyl cellulose (HPMC) in building mortar and plastering mortar
    High water retention can make the cement fully hydrated, significantly increase the bond strength, and appropriately improve the tensile elongation and shear strength, greatly improving the construction effect and working efficiency.
    Application of hydroxypropyl methyl cellulose (HPMC) in water-resistant putty powder
    The cellulose ether in the putty powder is mainly used for water retention, bonding and lubrication to avoid cracks and dehydration caused by rapid water loss. At the same time, it enhances the adhesion of the putty, reduces the sagging phenomenon in the construction, and makes the construction more smooth.
    Application and function of hydroxypropyl methyl cellulose (HPMC) in plaster series
    In gypsum series products, cellulose ether mainly plays the role of water retention, increasing lubrication, and has a certain retarding effect, which solves the problems of bulging and failure to reach the initial strength in the construction process, and can prolong the working time.
    Application of hydroxypropyl methyl cellulose (HPMC) in interfacial agent
    It is mainly used as a thickener, which can improve the tensile strength and shear strength, improve the surface coating, and enhance the adhesion and bonding strength.
    Application and function of hydroxypropyl methyl cellulose (HPMC) in exterior wall thermal insulation mortar
    Cellulose ether plays a key role in bonding and increasing strength in this material, which is that sand will be easier to be coated, improve work efficiency, and have anti vertical flow effect at the same time. Higher water retention performance can prolong the working time of mortar, improve shrinkage and cracking resistance, improve surface quality, and improve bonding strength.
    Application of hydroxypropyl methyl cellulose (HPMC) in tile binder
    The high water retention can significantly improve the bonding strength of ceramic tiles and bases without soaking or wetting them in advance. The slurry can have long construction cycle, fine, uniform, convenient construction, and good moisture resistance at the same time.
    Application and function of hydroxypropyl methyl cellulose (HPMC) in joint sealant and gutter sealant
    The addition of cellulose ether makes it have good edge adhesion, low shrinkage and high wear resistance, which protects the base material from mechanical damage and avoids the impact of penetration on the whole building.
    Application of hydroxypropyl methyl cellulose (HPMC) in self leveling materials
    The stable adhesion of cellulose ether ensures good fluidity and self leveling ability. The water retention rate is controlled so that it can solidify rapidly and reduce cracking and shrinkage.

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  • In recent years, the government of Pakistan has recognized the potential of HPMC in driving economic growth. Efforts have been made to improve local production capacity through investments in research and development, and by fostering partnerships with international players Efforts have been made to improve local production capacity through investments in research and development, and by fostering partnerships with international players Efforts have been made to improve local production capacity through investments in research and development, and by fostering partnerships with international players Efforts have been made to improve local production capacity through investments in research and development, and by fostering partnerships with international playershpmc pakistan. This has led to the establishment of specialized plants, which not only create employment opportunities but also contribute to reducing imports, thereby strengthening the national economy.
  • Chemical dissolver for cement.
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