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The water retention of hydroxypropyl methylcellulose products themselves can be influenced by the following four factors, as detailed below for reference:
1. Viscosity Impact on Water Retention of Hydroxypropyl Methylcellulose:
The water retention capacity of hydroxypropyl methylcellulose increases with its viscosity. Once the viscosity reaches a certain level, the rate of increase in water retention becomes more gradual.
2. Effect of Dosage on Water Retention of Hydroxypropyl Methylcellulose:
Generally, higher dosage leads to greater water retention, thereby enhancing water retention effectiveness. Within the range of 0.25-0.6% dosage, water retention increases more rapidly with higher dosage. As the dosage continues to increase, the trend of water retention enhancement slows down.
3. Impact of Thermal Gelation Temperature on Water Retention of Hydroxypropyl MethylcelluloseHPMC:
Generally, higher thermal gelation temperatures result in higher water retention. Conversely, lower thermal gelation temperatures lead to lower water retention.
4. Influence of Uniformity on Water Retention of Hydroxypropyl Methylcellulose:
HPMC
Hydroxypropyl methylcellulose with uniform reactions, where methoxy and hydroxypropoxy groups are evenly distributed, exhibits higher water retention capacity.
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