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Firstly, the construct grade of HPMC refers to the degree of substitution of hydroxypropyl groups on the cellulose backbone. This parameter affects the solubility and viscosity of the polymer. A higher degree of substitution results in increased solubility and reduced viscosity, whereas a lower degree of substitution leads to decreased solubility and increased viscosity. Therefore, understanding the construct grade is essential for selecting the appropriate HPMC for specific applications.

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Shijiazhuang Yongfeng additive powder