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The hydrophilic nature of HEC plays a vital role in its thickening mechanism. The hydroxyethyl groups present in the HEC molecule interact favorably with water, enhancing solubility and promoting the formation of HEC's gel-like structure. This hydrophilicity allows HEC to swell in water, which is a key characteristic of its functionality as a thickener. As the HEC chains swell, they create a higher resistance to flow, leading to increased viscosity.
hydroxyethyl cellulose thickening mechanism
