Porous Cellulose Particles Surface Area Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing porous cellulose particles lack sufficient mechanical strength and exhibit degraded rolling and oil absorbing properties when subjected to mechanical load, particularly when their BET specific surface area is outside the range of 1.7 to 24.0 m^2/g.
Innovation Solution
The development of porous cellulose particles with a BET specific surface area of 1.7 to 24.0 m^2/g, featuring open cells extending from the particle surface to the interior, which enhances mechanical strength, rolling property, and oil absorbing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If porous cellulose particles have high BET specific surface area, then oil absorbing property is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the BET specific surface area to fall within the range of 1.7 to 24.0 m²/g. This specific parameter range resolves the contradiction by finding the optimal balance point where sufficient oil absorbing capacity is achieved while maintaining adequate mechanical strength. The controlled porosity and surface area parameters prevent both excessive weakness and insufficient oil absorption.
2Ease of operation
If porous cellulose particles have high BET specific surface area, then rolling property is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent resolves this contradiction through parameter changes by controlling the BET specific surface area within 1.7 to 24.0 m²/g and volume-average particle size within 3 to 45 μm. These parameter optimizations ensure that particles maintain sufficient mechanical strength to withstand processing and application while achieving excellent rolling properties for smooth cosmetic application.
3Strength
If porous cellulose particles have low BET specific surface area, then mechanical strength is improved, but oil absorbing property deteriorates
Solution Approach 1:
The patent applies parameter changes by setting the lower limit of BET specific surface area at 1.7 m²/g, ensuring that mechanical strength is maintained while preventing oil absorbing property from deteriorating. This parameter boundary establishes the minimum porosity required to preserve the essential oil absorption function of porous cellulose particles.
4Strength
If porous cellulose particles have low BET specific surface area, then mechanical strength is improved, but rolling property deteriorates
Solution Approach 1:
The patent resolves this contradiction through parameter changes by optimizing both BET specific surface area (1.7 to 24.0 m²/g) and volume-average particle size (3 to 45 μm). This dual parameter optimization ensures particles maintain mechanical strength while achieving the smooth rolling and spreading properties required for cosmetic applications.
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
These optimized porous cellulose particles demonstrate improved mechanical strength and enhanced rolling and oil absorbing properties after application of mechanical load, compared to particles with BET specific surface areas outside the specified range.
Implementation Method 1
the porous cellulose particles have open cells extending from a particle surface to a particle interior
Data Source
AI summary
Porous cellulose particles contain a cellulose, a cellulose derivative, or a mixture thereof as a main component, in which the porous cellulose particles have open cells extending from a particle surface to a particle interior, and have a BET specific surface area of 1.7 m2/g or more and 24.0 m2/g or less.