FUNCTIONALIZED GLYCIDYL METHACRYLATE GRAFTED POLYAMIDE 6 AS POTENTIAL ADSORBENT

Abstract

The present invention relates to functionalized Glycidyl methacrylate grafted Polyamide 6 as an effective adsorbent, particularly for CO2 capture and wastewater treatment. The material comprises Glycidyl Methacrylate, Polyamide 6, a solvent, and a functional group. The grafting process is enhanced through radiation techniques, including gamma rays, ultraviolet rays, and X-rays, making it a safer and more energy-efficient alternative to traditional thermal methods. The composition contains Glycidyl Methacrylate at 5% to 20% by volume in acetone. Characterization techniques, including FTIR for chemical bonding analysis, TGA for thermal stability assessment, and FESEM for surface morphology evaluation, validate the grafting and functionalization. This dual customization of functional groups significantly enhances the adsorbent's selectivity and binding efficiency for various adsorbates while improving regeneration capabilities, positioning it as a promising material for environmental applications.

Specification

Description:FIELD OF THE INVENTION
The present invention relates to an advanced adsorbent material for environmental applications. More specifically, the present invention relates to a functionalized Glycidyl methacrylate grafted Polyamide 6, designed to improve adsorption properties for various pollutants.
BACKGROUND OF THE INVENTION
Adsorbents play a crucial role in various environmental applications, particularly in the removal of pollutants from air and water. Adsorbents have the ability to capture and retain substances on their surface through physical or chemical interactions, making them essential for processes such as gas separation, wastewater treatment, and air purification.
The effectiveness of an adsorbent is influenced by several factors, including surface area, pore structure, and the presence of functional groups that enhance selectivity and binding efficiency. Traditional adsorbents, such as activated carbon and zeolites, have been widely used; however, they often come with limitations related to regeneration, cost, and environmental impact.
JP2024113016A discloses a gas absorbing material containing polymeric compound particles having amino groups and fine particles with a primary particle size of 1000 nm or less is a gas absorbing material with a much faster gas absorption and emission rate. Here, the polymeric compound of the polymeric compound particles having amino groups can be, for example, a (meth)acrylamide-based polymer, and the fine particles can be, for example, inorganic particles or fluororesin particles that have been given water repellency.
JP2521883B2 discloses a porous polymeric membrane is subjected to plasma treatment, hydrophilic vinyl monomer vapor is brought into contact with the plasma treated porous polymeric membrane to be subjected to graft polymerization and, subsequently, a carbon dioxide carrier liquid is impregnated into the porous polymeric membrane having the hydrophilic polymer surface layer thus obtained to be held thereto.
Recent innovations in polymer chemistry have led to the development of synthetic adsorbents that can be tailored for specific applications. Functionalization of these polymers can enhance their adsorption properties, making them more effective for capturing targeted pollutants. As environmental regulations become stricter and the demand for efficient pollution control technologies increases, there is a growing interest in developing advanced adsorbents that combine high performance with sustainability. This drive for innovation highlights the need for new materials that can effectively address contemporary environmental challenges.
OBJECTIVE OF THE INVENTION
The main objective of the present invention is to provide a two-stage functionalization process that significantly enhances the adsorbent's capacity to capture CO2, effectively addressing limitations found in existing adsorbents.
Another objective of the present invention is to provide customizable functional properties, enabling modifications that improve selectivity and binding efficiency for various adsorbates.
Yet another objective of the present invention is to provide energy efficiency and safety through a radiation-induced grafting process, which is less energy-intensive and avoids the use of hazardous chemicals compared to traditional methods.
Yet another objective of the present invention is to provide versatility in application, allowing for effective separation of specific adsorbates from flue gas and the removal of organic contaminants from wastewater.
Yet another objective of the present invention is to provide streamlined preparation methods that facilitate precise control over the functionalization process, resulting in higher reproducibility and performance of the adsorbent.
Yet another objective of the present invention is to provide effective characterization techniques such as FTIR, TGA, and SEM, which validate the functionalization and enhance the understanding of the adsorbent's structural and thermal properties.
Further objectives, advantages, and features of the present invention will become apparent from the detailed description provided herein below, in which various embodiments of the disclosed invention are illustrated by way of example.

SUMMARY OF THE INVENTION
The present invention relates to a functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent includes a Glycidyl Methacrylate, a Polyamide 6, a solvent and a functional group. The functional group includes but is not limited to amine group. The radiations include but is not limited to gamma rays, ultraviolet rays and X-rays. The solvent includes but is not limited to acetone. The glycidyl methacrylate is present in a range from 5% to 20% by volume of the total composition in acetone. The grafting and functionalization are validate using characterization techniques, the characterization techniques include but is not limited to FTIR, TGA, and SEM. The Fourier Transform Infrared Spectroscopy (FTIR) is used to analyse chemical bonding and functionalization of adsorbent. The Thermogravimetric Analysis (TGA) is used to assess thermal stability. The Field Emission Scanning Electron Microscopy (FESEM) is used to evaluate the surface morphology of the adsorbent. The integration of radiation-induced grafting of glycidyl methacrylate with functional group on polyamide 6 fibres enhances the adsorptive properties of the adsorbent material for selective CO2 capture and also improves regeneration capabilities, this two-stage customization of functional groups on polyamide 6 increases both selectivity and binding efficiency for various adsorbates. Employing radiation for grafting is a safe and potentially more energy-efficient method compared to conventional thermal processes.
The main advantage of the present invention is that it provides a two-stage functionalization process that significantly improves the adsorbent's capacity to capture CO2, addressing limitations found in existing adsorbents.
Another advantage of the present invention is that it provides a customizable functional property, that enables modifications to enhance selectivity and binding efficiency for a variety of adsorbates.
Yet another advantage of the present invention is that it provides energy efficiency and safety through a radiation-induced grafting process, that is less energy-intensive and avoids hazardous chemicals compared to traditional methods.
Yet another advantage of the present invention is that it provides versatility in its application, allowing it to effectively separate specific adsorbates from flue gas and remove organic contaminants from wastewater.
Yet another advantage of the present invention is that it provides streamlined preparation methods, allowing for precise control over the functionalization process, resulting in higher reproducibility and performance of the adsorbent.
Yet another advantage of the present invention is that it provides effective characterization techniques such as FTIR, TGA, and SEM, which validate the functionalization and enhance understanding of the adsorbent's structural and thermal properties.
Further objectives, advantages, and features of the present invention will become apparent from the detailed description provided herein below, in which various embodiments of the disclosed invention are illustrated by way of example.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings are incorporated in and constitute a part of this specification to provide a further understanding of the invention. The drawings illustrate one embodiment of the invention and together with the description, serve to explain the principles of the invention.
Fig 1. illustrates steps of adsorbent preparation
Fig 2. illustrates chemical Structure of Functionalized Glycidyl Methacrylate Grafted Polyamide 6.
Fig 3. illustrates Adsorbent Material in Adsorption-Desorption System.
DETAILED DESCRIPTION OF THE INVENTION
Definition
The terms "a" or "an", as used herein, are defined as one or as more than one. The term "plurality", as used herein, is defined as two as or more than two. The term "another", as used herein, is defined as at least a second or more. The terms "including" and/or "having", as used herein, are defined as comprising (i.e., open language). The term "coupled", as used herein, is defined as connected, although not necessarily directly, and not necessarily mechanically.
The term "comprising" is not intended to limit inventions to only claiming the present invention with such comprising language. Any invention using the term comprising could be separated into one or more claims using "consisting" or "consisting of" claim language and is so intended. The term "comprising" is used interchangeably used by the terms "having" or "containing".
Reference throughout this document to "one embodiment", "certain embodiments", "an embodiment", "another embodiment", and "yet another embodiment" or similar terms means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Furthermore, the particular features, structures, or characteristics are combined in any suitable manner in one or more embodiments without limitation.
The term "or" as used herein is to be interpreted as an inclusive or meaning any one or any combination. Therefore, "A, B or C" means any of the following: "A; B; C; A and B; A and C; B and C; A, B and C". An exception to this definition will occur only when a combination of elements, functions, steps, or acts are in some way inherently mutually exclusive.
As used herein, the term "one or more" generally refers to, but not limited to, singular as well as the plural form of the term.
The drawings featured in the figures are to illustrate certain convenient embodiments of the present invention and are not to be considered as a limitation to that. Term "means" preceding a present participle of operation indicates the desired function for which there is one or more embodiments, i.e., one or more methods, devices, or apparatuses for achieving the desired function and that one skilled in the art could select from these or their equivalent in view of the disclosure herein and use of the term "means" is not intended to be limiting disclosure herein and use of the term "means" is not intended to be limiting.
Fig 1. illustrates depicts the process that commences with the grafting stage, where gamma radiation is used for the bonding of GMA to the polymer, forming a graft copolymer. The next stage involves the functionalisation of the grafted fibers with ethanolamine, introducing new functional groups to the material and enhancing its adsorptive properties.
Fig 2. illustrates a schematic of the change in the chemical structure of the functionalized adsorbent and displays a Polyamide 6 backbone, on which the Glycidyl Methacrylate is grafted followed by the Ethanolamine Functionalization, demonstrating the enhanced functionality.
Fig 3. illustrates the schematic of the adsorption- desorption system for the CO2, this includes a Column Setup, where the adsorbent material is placed within a column, the flow path indicates the direction of the adsorbed CO2 as it passes through the adsorbent, and provides a clear view of the operational setup and the flow dynamics.
The present invention relates to a functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent includes a Glycidyl Methacrylate, a Polyamide 6, a solvent and a functional group. The functional group includes but is not limited to amine group. The radiations include but is not limited to gamma rays, ultraviolet rays and X-rays. In an embodiment, the solvent includes but is not limited to acetone. In the preferred embodiment, the glycidyl methacrylate is present in a range from 5% to 20% by volume of the total composition in acetone. In an embodiment, the grafting and functionalization are validate using characterization techniques, the characterization techniques include but is not limited to FTIR, TGA, and SEM. In the preferred embodiment, the Fourier Transform Infrared Spectroscopy (FTIR) is used to analyse chemical bonding and functionalization of adsorbent. In the preferred embodiment, the Thermogravimetric Analysis (TGA) is used to assess thermal stability. In the preferred embodiment, the Field Emission Scanning Electron Microscopy (FESEM) is used to evaluate the surface morphology of the adsorbent. Herein, the integration of radiation-induced grafting of glycidyl methacrylate with functional group on polyamide 6 fibres enhances the adsorptive properties of the adsorbent material for selective CO2 capture and also improves regeneration capabilities, this two-stage customization of functional groups on polyamide 6 increases both selectivity and binding efficiency for various adsorbates. Herein, employing radiation for grafting is a safe and potentially more energy-efficient method compared to conventional thermal processes.
In an embodiment, the method for functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent includes:
take polyamide 6 fibres as the base material for the adsorbent;
mix the polyamide 6 with the glycidyl methacrylate;
expose the mixture to radiation to induce the grafting of the glycidyl methacrylate onto the polyamide 6, wherein the concentration of the glycidyl methacrylate and the radiation dose are adjusted to achieve a high degree of grafting, forming a graft copolymer;
purify the grafted fibres to remove any unreacted glycidyl methacrylate and to obtain the clean grafted polyamide 6 adsorbent for the functionalization;
treat the clean grafted polyamide 6 adsorbent using ethanolamine to introduce amine functional group onto the surface of the adsorbent material, to obtain amine-functionalized adsorbent material with enhanced adsorption properties;
wherein the amine-functionalized adsorbent material exhibits an adsorption capacity about 70% greater than unmodified polyamide 6;
use characterization techniques like FTIR, TGA, and SEM to validate grafting and functionalization of amine-functionalized adsorbent material;
to evaluate CO2 adsorption performance, set up a packed bed adsorption system and place the amine-functionalized adsorbent in a column;
measure the CO2 adsorption and desorption efficiency through cyclic tests to evaluate the performance of the adsorbent over multiple regeneration cycles;
use the produced adsorbent for effective CO2 capture from flue gas emissions and for the removal of organic impurities from wastewater.
In an embodiment, the present invention relates to a functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent includes a one or more Glycidyl Methacrylate, a one or more Polyamide 6, a one or more solvent and a one or more functional group. The one or more functional group includes but are not limited to amine group. The radiations include but are not limited to gamma rays, ultraviolet rays and X-rays. In an embodiment, the one or more solvent includes but are not limited to acetone. In the preferred embodiment, the one or more glycidyl methacrylate is present in a range from 5% to 20% by volume of the total composition in acetone. In an embodiment, the grafting and functionalization are validate using characterization techniques, the characterization techniques include but are not limited to FTIR, TGA, and SEM. In the preferred embodiment, the Fourier Transform Infrared Spectroscopy (FTIR) is used to analyse chemical bonding and functionalization of adsorbent. In the preferred embodiment, the Thermogravimetric Analysis (TGA) is used to assess thermal stability. In the preferred embodiment, the Field Emission Scanning Electron Microscopy (FESEM) is used to evaluate the surface morphology of the adsorbent. Herein, the integration of radiation-induced grafting of one or more glycidyl methacrylate with one or more functional group on one or more polyamide 6 fibres enhances the adsorptive properties of the adsorbent material for selective CO2 capture and also improves regeneration capabilities, this two-stage customization of one or more functional groups on one or more polyamide 6 increases both selectivity and binding efficiency for various adsorbates. Herein, employing radiation for grafting is a safe and potentially more energy-efficient method compared to conventional thermal processes.
In an embodiment, the method for functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent includes:
take one or more polyamide 6 fibres as the base material for the adsorbent;
mix the one or more polyamide 6 with the one or more glycidyl methacrylate;
expose the mixture to radiation to induce the grafting of the one or more glycidyl methacrylate onto the one or more polyamide 6, wherein the concentration of the one or more glycidyl methacrylate and the radiation dose are adjusted to achieve a high degree of grafting, forming a graft copolymer;
purify the grafted fibres to remove any unreacted one or more glycidyl methacrylate and to obtain the clean grafted polyamide 6 adsorbent for the functionalization;
treat the clean grafted polyamide 6 adsorbent using ethanolamine to introduce amine functional group onto the surface of the adsorbent material, to obtain amine-functionalized adsorbent material with enhanced adsorption properties;
wherein the amine-functionalized adsorbent material exhibits an adsorption capacity about 70% greater than unmodified polyamide 6;
use characterization techniques like FTIR, TGA, and SEM to validate grafting and functionalization of amine-functionalized adsorbent material;
to evaluate CO2 adsorption performance, set up a packed bed adsorption system and place the amine-functionalized adsorbent in a column;
measure the CO2 adsorption and desorption efficiency through cyclic tests to evaluate the performance of the adsorbent over multiple regeneration cycles;
use the produced adsorbent for effective CO2 capture from flue gas emissions and for the removal of organic impurities from wastewater. , Claims:1. A functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent, the functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent comprising:
an at least one Glycidyl Methacrylate;
an at least one Polyamide 6
an at least one solvent; and
an at least one functional group;
characterized in that, the integration of radiation-induced grafting of glycidyl methacrylate with functional group on polyamide 6 fibres enhances the adsorptive properties of the adsorbent material for selective CO2 capture and also improves regeneration capabilities, this two-stage customization of functional groups on polyamide 6 increases both selectivity and binding efficiency for various adsorbates;
wherein, employing radiation for grafting is a safe and potentially more energy-efficient method compared to conventional thermal processes.
2. A functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent as claimed in claim 1, wherein the grafting and functionalization are validate using characterization techniques that are selected from FTIR, TGA, and SEM.

3. The characterization techniques as claimed in claim 3, wherein the Fourier Transform Infrared Spectroscopy (FTIR) is used to analyse chemical bonding and functionalization of adsorbent.

4. The characterization techniques as claimed in claim 3, wherein the Thermogravimetric Analysis (TGA) is used to assess thermal stability.

5. The characterization techniques as claimed in claim 3, wherein Field Emission Scanning Electron Microscopy (FESEM) is used to evaluate the surface morphology of the adsorbent.

6. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent as claimed in claim1, wherein the functional group is selected from amine group.

7. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent as claimed in claim 1, wherein the radiations are selected from gamma rays, ultraviolet rays and X-rays.

8. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent as claimed in claim 1, wherein the solvent is selected from acetone.

9. The functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent as claimed in claim 1, wherein the glycidyl methacrylate is present in a range from 5% to 20% by volume of the total composition in acetone.

10. The method for functionalized Glycidyl methacrylate grafted Polyamide 6 as potential adsorbent as claimed in claim 1, the method comprising:
take polyamide 6 fibres as the base material for the adsorbent;
mix the at least one polyamide 6 with the at least one glycidyl methacrylate;
expose the mixture to radiation to induce the grafting of the at least one glycidyl methacrylate onto the at least one polyamide 6, wherein the concentration of the at least one glycidyl methacrylate and the radiation dose are adjusted to achieve a high degree of grafting, forming a graft copolymer;
purify the grafted fibres to remove any unreacted glycidyl methacrylate and to obtain the clean grafted polyamide 6 adsorbent for the functionalization;
treat the clean grafted polyamide 6 adsorbent using ethanolamine to introduce amine functional group onto the surface of the adsorbent material, to obtain amine-functionalized adsorbent material with enhanced adsorption properties;
wherein the amine-functionalized adsorbent material exhibits an adsorption capacity about 70% greater than unmodified polyamide 6;
use characterization techniques like FTIR, TGA, and SEM to validate grafting and functionalization of amine-functionalized adsorbent material;
to evaluate CO2 adsorption performance, set up a packed bed adsorption system and place the amine-functionalized adsorbent in a column;
measure the CO2 adsorption and desorption efficiency through cyclic tests to evaluate the performance of the adsorbent over multiple regeneration cycles;
use the produced adsorbent for effective CO2 capture from flue gas emissions and for the removal of organic impurities from wastewater.

Documents