Biopolysaccharide Dispersant Polymer for Phosphorus-Free Scale Control
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Solution Overview
Problem
Existing petroleum-based polymeric dispersants used in cleaning agents are non-degradable, contributing to environmental pollution and posing challenges in polymerization control, while phosphorus-containing alternatives like sodium tripolyphosphate exacerbate water eutrophication.
Innovation Solution
A bio-polysaccharide-based polymer is synthesized using a dual-initiation mode in an alcohol-water solvent environment, employing polysaccharides as substrates with hydrophilic and hydrophobic monomers, resulting in a phosphorus-free, biodegradable polymer with excellent dispersing properties for inorganic scales.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phosphorus-containing salts are used for chelating calcium and magnesium ions, then the chelating effect is improved, but water eutrophication is exacerbated
Solution Approach 1:
The patent replaces phosphorus-containing salts with polysaccharide-based polymers, fundamentally changing the chemical composition parameter. This substitution maintains chelating functionality while eliminating phosphorus discharge that causes eutrophication, directly resolving the contradiction between effective water treatment and environmental protection
Solution Approach 2:
The invention creates composite polymer structures by grafting acrylic acid and other monomers onto polysaccharide backbones. This composite approach combines the biodegradability and eco-friendliness of natural polysaccharides with the effective chelating properties of synthetic polymer segments, achieving both reliable ion binding and environmental safety
2Reliability
If petroleum-based polymeric dispersants are used for dispersing inorganic scales, then the dispersing ability is improved, but environmental degradation and accumulation occur
Solution Approach 1:
The patent fundamentally changes the material origin parameter from petroleum-based synthetic polymers to polysaccharide-based biopolymers. This parameter change enables the dispersant to be biodegradable and environmentally friendly while maintaining effective dispersing ability for inorganic scales through optimized polymer structure and functional groups
Solution Approach 2:
The invention designs the dispersant based on natural polysaccharides that can be readily biodegraded by microorganisms in the environment. After performing their dispersing function, these polymer dispersants are broken down by natural biological processes, eliminating the accumulation and long-term pollution problems associated with traditional petroleum-based dispersants
3Productivity
If traditional polymerization methods are used for dispersant production, then the production efficiency is improved, but polymerization control difficulties arise
Solution Approach 1:
The patent employs ammonium persulfate as a water-soluble initiator intermediary to trigger polymerization. This intermediary approach enables controlled polymerization of the polysaccharide-grafted monomers under mild aqueous conditions, achieving both high production efficiency and good polymerization control without requiring complex equipment or harsh conditions
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 bio-polysaccharide-based polymer effectively disperses inorganic scales and is environmentally friendly, with a biodegradability exceeding 60% within 28 days, addressing the issues of non-degradability and environmental impact of traditional dispersants.
Implementation Method 1
reacting the polysaccharide material, the first monomer and the first oxidant at a reaction temperature of 55-80°C for 1-4h to obtain a first mixed system
Implementation Method 2
employing polysaccharides as substrates with hydrophilic and hydrophobic monomers, resulting in a phosphorus-free, biodegradable polymer
Data Source
Figure 1~2
Figure 3
AI summary
Provided is a bio-polysaccharide-based polymer as well as a preparation method therefor and a use thereof, which relates to the technical field of polymers. According to the preparation method, a polysaccharide material, a first monomer and a first oxidant in proportion are added for reaction, so as to obtain a first mixed system; an alcohol solvent is added into the first mixed system for reaction, so as to obtain a second mixed system; a second monomer and a second oxidant are added into the second mixed system for reaction, so as to obtain a third mixed system; a temperature-raising reaction is performed on the obtained third mixed system, so as to obtain the bio-polysaccharide-based polymer. The bio-polysaccharide-based polymer is prepared from phosphorus-free and safe raw materials, possesses biodegradability as well as other functional properties, demonstrating resistance to hard water, good dispersing ability for various types of inorganic scales, iron oxides as well as kaolinite, thus making it suitable for making cleaning agents. The whole preparation process is safe and environmentally friendly, and easier to control, thus easily realizing industrial production.