Nanocellulose Masterbatch Drying to Prevent Agglomeration
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Solution Overview
Problem
The widespread use of nanocellulose is hindered by the difficulty in maintaining nanoscale dimensions during drying due to irreversible agglomeration, which affects mechanical strength and processing efficiency in polymer composites.
Innovation Solution
A nanocellulose-dispersion concentrate comprising nanocellulose and a dispersion/drying agent, such as waxes or polyolefins, is used to prevent agglomeration, allowing for economical and scalable drying processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If nanocellulose is dried to remove water, then transportation costs are reduced and dry form is obtained, but nanocellulose particles agglomerate irreversibly and lose nanoscale dimensions
Solution Approach 1:
A dispersion agent is introduced as an intermediary substance between nanocellulose particles during the drying process. This dispersion agent prevents direct contact and irreversible bonding between nanocellulose particles while allowing water removal, thereby maintaining nanoscale dimensions in the final dry product.
Solution Approach 2:
The patent changes the physical-chemical parameters of the drying process by controlling temperature, humidity, and drying rate to prevent agglomeration. By optimizing these parameters and using dispersion agents, the nanocellulose maintains its nanoscale structure while being dried to a stable dry form for transportation and storage.
2Adaptability or versatility
If nanocellulose is dried to prevent water-related issues in polymer processing, then processing compatibility is improved, but mechanical strength enhancement is reduced due to agglomeration
Solution Approach 1:
The dispersion agent acts as a mediator that allows the nanocellulose to be dried for polymer processing compatibility while preventing the agglomeration that would otherwise occur. This ensures that the nanocellulose maintains its individual particle structure, enabling it to effectively enhance mechanical strength when incorporated into polymer composites.
Solution Approach 2:
The dispersion agent is introduced into the nanocellulose suspension before the drying process begins. This preliminary action ensures that the nanocellulose particles are coated or separated by the dispersion agent, preventing agglomeration during subsequent drying and ensuring mechanical strength enhancement in the final composite product.
3Ease of manufacture
If conventional drying methods are used to produce dry nanocellulose, then production scalability is limited, but economical and scalable drying processes are needed
Solution Approach 1:
The dispersion agent enables the use of conventional, scalable drying methods by preventing agglomeration during the drying process. This allows industrial-scale drying to be performed using standard equipment and procedures, making the process both economical and scalable for commercial production of dry nanocellulose.
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 solution maintains nanoscale dimensions and enhances mechanical strength in polymer composites, reducing transportation costs and expanding application possibilities.
Implementation Method 1
A nanocellulose-dispersion concentrate comprising nanocellulose and a dispersion/drying agent is used to prevent agglomeration
Implementation Method 2
removing water from nanocellulose suspensions to maintain nanoscale dimensions is very difficult
Data Source
AI summary
The disclosed technology provides improved compositions and methods for dispersion and drying of nanocellulose, for polymer composites and other systems. Some variations provide a nanocellulose-dispersion concentrate comprising nanocellulose and a dispersion/drying agent selected for compatibility with the nanocellulose and with the nanocellulose-containing composite product, wherein the dispersion/drying agent is selected from the group consisting of waxes, polyolefins, olefin-maleic anhydride copolymers, olefin-acrylic acid copolymers, polyols, fatty acids, fatty alcohols, polyol-glyceride esters, polydimethylsiloxanes, polydimethylsiloxane-alkyl esters, polyacrylamides, starches, cellulose derivatives, particulates, and combinations or reaction products thereof, and wherein the nanocellulose-dispersion concentrate is in solid form (e.g., a powder) or liquid form. Other variations provide a nanocellulose-dispersion masterbatch (e.g., pellets) comprising the nanocellulose-dispersion concentrate and a carrier material. Other variations provide a nanocellulose-containing composite including the nanocellulose-dispersion masterbatch or concentrate and a matrix material. Processes of making and using the disclosed compositions are described.