Hydroxypropyl Cellulose Particle Size Distribution for Water Solubility
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Solution Overview
Problem
Hydroxypropyl cellulose particles of small particle size often clump when infused into water, leading to unresolved particles.
Innovation Solution
Hydroxypropyl cellulose particles with specific particle size distributions, specifically between 150 μm and 355 μm, and a hydroxypropyl group content of 53.4-77.5 weight %, which enhance solubility in water and inhibit clumping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If hydroxypropyl cellulose particles of small particle size are used, then dissolution speed is improved, but clumping and unresolved particles occur
Solution Approach 1:
The patent applies parameter changes by optimizing the particle size distribution parameters of hydroxypropyl cellulose. Specifically, it controls the proportion of particles in different size ranges (e.g., 80-150 μm, 150-355 μm, 355-500 μm) to achieve a balance between dissolution speed and clumping prevention. This parameter optimization resolves the contradiction by finding the optimal particle size distribution that enables rapid dissolution while maintaining solution uniformity without clumping.
2Reliability
If particle size is reduced to enhance dissolution, then solubility is improved, but particle clumping increases
Solution Approach 1:
The patent applies local quality by creating different particle size regions within the overall particle distribution. Instead of using a single uniform particle size, it maintains a mixed distribution with specific proportions of smaller particles (80-150 μm) for rapid dissolution and larger particles (150-355 μm, 355-500 μm) to prevent clumping. This local differentiation in particle size quality resolves the contradiction between solubility and clumping prevention.
Solution Approach 2:
The patent applies composite material principles by creating a composite particle size distribution system. It combines particles of different sizes (80-150 μm, 150-355 μm, 355-500 μm) in specific proportions to form a composite structure that exhibits both rapid dissolution characteristics and anti-clumping properties. This composite approach allows the system to achieve both high solubility and prevention of particle aggregation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The particles rapidly dissolve in water without clumping, promoting viscosity control, gelation, and stabilization of solutions.
Implementation Method 1
Hydroxypropyl cellulose particles which rapidly dissolve in water without clumping
Data Source
AI summary
Hydroxypropyl cellulose particles which contain 50-100 weight % of particles with a particle size that is larger than 150 μm and not larger than 355 μm.