extra large ironing board cover elasticated_table cloth manufacturers
Structurally, HEC maintains a flexible chain configuration due to its polymeric nature. This elasticity allows HEC to exhibit unique rheological properties, such as pseudoplasticity (shear-thinning behavior). When subjected to stress, the HEC solutions become less viscous, enabling easier application in topical formulations or coatings. Upon removal of stress, the viscosity returns to its original state, which is particularly advantageous in industries like construction, where HEC is used as a thickener in adhesives and paints.
hydroxyethyl cellulose structure

In pharmaceutical applications, HPMC is frequently utilized as a film-forming agent, thickener, and stabilizer in drug formulations. The glass transition temperature plays a vital role in determining the stability and release profile of the drug. For instance, if HPMC is used in a controlled-release formulation, knowing its Tg can help in predicting how the polymer will behave at different temperatures. A Tg that is significantly lower than the storage temperature may indicate a risk of the polymer transitioning to a rubbery state, which could lead to premature release of the active ingredient.
hpmc glass transition temperature
