Polymethylsiloxane Polyhydrate Supramolecular Sorbent
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Solution Overview
Problem
Existing methods for producing polymethylsiloxane polyhydrate (PMSPH) do not effectively address the issue of low molecular weight fractions formation, which reduces the purity and yield of the product, and fail to impart supramolecular properties to the resulting PMSPH.
Innovation Solution
The method involves applying acid to a metasil solution to induce polycondensation, mixing the solution at temperatures above 90°C in a specific ratio of alkali to polymethylsiloxane, and adding an electrolyte to enhance supramolecular properties and improve the q range of the resulting PMSPH.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing methods are used to produce PMSPH, then the production process is simple, but the product purity is low due to formation of low molecular weight fractions
Solution Approach 1:
The patent applies preliminary action by adding electrolyte to the metasil solution before acidification and polycondensation. This preliminary step modifies the solution properties in advance to prevent low molecular weight fraction formation during subsequent processing, thereby improving product purity without complicating the overall production process
Solution Approach 2:
The patent changes physical and chemical parameters of the production process, specifically introducing electrolyte concentration as a new parameter and optimizing the ratio of alkali to polymethylsiloxane. These parameter changes control the polycondensation process to favor formation of high molecular weight fractions, improving product purity
2Adaptability or versatility
If existing methods are used to produce PMSPH, then the production method is conventional, but the product lacks supramolecular properties
Solution Approach 1:
The patent changes the chemical environment parameters by introducing electrolyte and optimizing alkali ratio, which transforms the conventional production method into one that yields PMSPH with supramolecular properties. This parameter modification enables the product to exhibit molecular capsule qualities while maintaining ease of manufacture
Solution Approach 2:
The patent creates a composite system by combining metasil solution, alkali, acid, and electrolyte in specific proportions. This composite approach produces PMSPH with enhanced supramolecular properties, including sorption capacity akin to molecular capsules, while keeping the manufacturing process accessible
3Productivity
If acid is added to metasil solution for polycondensation, then the product is formed, but low molecular weight fractions reduce yield
Solution Approach 1:
The patent applies preliminary action by adding electrolyte to the metasil solution before acidification. This preliminary modification of the solution prevents the formation of low molecular weight fractions during the subsequent acid-induced polycondensation, thereby improving both yield and purity of the final product
Solution Approach 2:
The patent implements feedback control by optimizing the ratio of alkali to polymethylsiloxane and controlling electrolyte concentration. These controlled parameters provide feedback mechanisms that guide the polycondensation process to favor high molecular weight fraction formation, improving both yield and purity
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
This approach results in a PMSPH with enhanced sorption capacity, exhibiting supramolecular properties akin to a molecular capsule, thereby improving the product's purity, yield, and functional properties.
Implementation Method 1
applying acid to a metasil solution to induce polycondensation
Implementation Method 2
adding an electrolyte to enhance supramolecular properties and improve the q range of the resulting PMSPH
Implementation Method 3
PMSPH with enhanced sorption capacity, exhibiting supramolecular properties akin to a molecular capsule
Data Source
AI summary
The invention relates to a method for producing a sorbent having selective properties, and in particular to a method for producing polymethylsiloxane polyhydrate (methylsilicic acid hydrogel) used in chemistry, medicine, and veterinary medicine. According to the method, polycondensation of a metasil solution is carried out with acid, the said solution being obtained by mixing at temperatures above 90° C. in a ratio of 0.84-1.00 mol, and in the best embodiment of the invention—in the range of 0.84-0.90 mol of alkali per 1 mol of polymethylsiloxane contained in methylsilanetriol, adding an electrolyte in an amount of 0.025-0.1 mol per 1 mol of alkali. The resulting polymethylsiloxane polyhydrate has the supramolecular properties of a molecular capsule.