Bacterial Cellulose Micropowder for Biodegradable Oil Absorption
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Solution Overview
Problem
Current micropowders and microbeads used in consumer products are non-biodegradable, pose environmental and health risks, and fail to meet consumer demands for aesthetic quality, feel, and functionality, particularly in cosmetics and personal care products.
Innovation Solution
A biodegradable micropowder composed of bacterial cellulose particles with a specific average particle diameter and crystallinity, produced through grinding and drying, offering high oil absorption capacity and maintaining granularity in liquid formulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-biodegradable synthetic polymers and minerals are used to manufacture micropowders, then functional properties such as oil absorption capacity and texture enhancement are achieved, but environmental and health risks arise due to lack of biodegradability
Solution Approach 1:
The invention changes the material composition parameter from non-biodegradable synthetic polymers to biodegradable natural polymers (cellulose, starch, proteins). This parameter change maintains functional performance while eliminating environmental persistence and health risks associated with microplastic accumulation in ecosystems and human consumption chains
Solution Approach 2:
The invention employs biodegradable micropowders designed to decompose naturally after use, replacing persistent synthetic materials. The micropowders perform their function during product use and then break down into harmless components, eliminating long-term environmental contamination while maintaining effective functionality during the product lifecycle
2Stability of the object's composition
If micropowder particle diameter is reduced to prevent settling, then suspension stability is improved, but manufacturing complexity and energy consumption increase
Solution Approach 1:
The invention changes the particle size parameter to an optimized range (1-1000 μm) that balances suspension stability with manufacturing feasibility. This parameter optimization prevents excessive settling while avoiding the need for ultra-fine particle processing equipment and high-energy milling operations, thereby reducing manufacturing complexity
Solution Approach 2:
The invention incorporates preliminary action by pre-forming micropowders with controlled particle sizes and surface properties before final product formulation. This preliminary size control and surface treatment reduces subsequent settling issues without requiring complex in-process adjustments during manufacturing
3Ease of manufacture
If conventional drying methods are used for micropowder production, then manufacturing simplicity is maintained, but particle morphology and functional properties deteriorate
Solution Approach 1:
The invention replaces conventional thermal drying with freeze-drying (lyophilization), substituting a purely thermal process with a phase-change process. This substitution preserves particle morphology by avoiding thermal stress and aggregation, maintaining functional properties like surface area and porosity, while still being a straightforward batch process suitable for manufacturing
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 bacterial cellulose micropowder provides superior oil absorption, maintains texture and aesthetics, and is environmentally friendly, addressing health and environmental concerns while meeting consumer demands for soft, non-sticky, and non-greasy finishes.
Implementation Method 1
a micropowder having an oil absorption capacity of at least 2.5 g/g
Implementation Method 2
grinding bacterial cellulose to form bacterial cellulose particles with an average particle diameter of 1-1000 μm
Implementation Method 3
drying the ground bacterial cellulose particles
Data Source
AI summary
The invention preferably relates to a micropowder having an oil absorption capacity of at least 2.5 g/g, wherein the micropowder is biodegradable. The invention preferably relates further to a biodegradable micropowder comprising bacterial cellulose particles, wherein an average particle diameter of the bacterial cellulose particles is between 1-1000 μm and an average crystallinity of the bacterial cellulose particles is between 30-80%. The invention also preferably relates to a method for producing a micropowder. The method comprises the steps of producing bacterial cellulose from a bacterial culture such that an average crystallinity of the bacterial cellulose produced is between 30-80%, grinding bacterial cellulose to form bacterial cellulose particles with an average particle diameter of 1-1000 μm and drying the ground bacterial cellulose particles. The invention also relates to a cosmetic or personal care product comprising the micropowder.