AU2021106372A4

AU2021106372A4 - A Moringa oleifera GUM BASED BIOPOLYMER COMPOSITION AND A METHOD TO SYNTHESIZE THE BIOPOLYMER

Info

Publication number: AU2021106372A4
Application number: AU2021106372A
Authority: AU
Inventors: R. Chitra; S. Eswaragomathy; Vengadesh Krishna M.; B. Nalini; Meera Naachiyar R.; Aafrin Hazaana S.; Vanathi S.; S. Selvasekarapandian; P. Christopher Selvin; N. Muniraj Vignesh
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-21
Filing date: 2021-08-21
Publication date: 2021-12-02
Anticipated expiration: 2029-08-21

Abstract

The present disclosure relates to a Moringa oleifera gum biopolymer composition and a method to synthesize the biopolymer. The composition comprises: a Moringa oleifera gum of a molecular weight of 190 kDa; and an ammonium nitrate (NH 4NO 3) salt. the method comprises: dissolving the Moringa oleifera gum in a distilled water at a room temperature and stirring until a complete dissolution is achieved; integrating a composition of 0.5wt% N1 4N3 into the Moringa oleifera gum polymeric solution and stirring continuously to obtain a homogeneous solution; decanting the solution into a container and keeping the container at 600 C for drying and removing a solvent; and attaining a brownish free standing flexible film wherein the flexible films is the biopolymer electrolyte Moringa oleifera gum; 9 0 000 ~CL E .20 0 00 E. (uU EE EE 0> r> Cu~ 0 u0 2~ 0 0 0 a-C 00 rU.-

Description

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A Moringa oleifera GUM BASED BIOPOLYMER COMPOSITION AND A METHOD TO SYNTHESIZE THE BIOPOLYMER

FIELD OF THE INVENTION

The present disclosure relates to a Moringa oleifera gum biopolymer composition and a method to synthesize the biopolymer.

BACKGROUND OF THE INVENTION

In today's day and age, significant progress in energy storage devices has prompted researchers to produce more environmentally friendly, adaptable, and effective battery materials for long-term development. Natural polymeric materials have gotten a lot of attention as a potential replacement for synthetic polymer electrolytes in electrochemical devices. Natural polymeric electrolytes provide evident advantages in terms of cost, flexibility, shape, and size geometry. Natural polymeric electrolytes also make a positive contribution to ionic conductivity and electrochemical stability.

Many biopolymer polysaccharide electrolytes, such as chitosan, starch, pectin, cellulose, iota-carrageenan, and kappa carrageenan, have been studied by scientists over the last decade. Ammonium salts are generally good proton donors to the polymer system, therefore ionic conduction is guided by the loosely bound H+ ion of NH 4NO 3 salt. The salt's lattice energy is low, and its solubility in water is excellent. Despite the fact that there has been a lot of research on solid polymer electrolytes with a variety of biopolymers and NH4NO 3, no work has been done on an ionic conductivity study of Moringa gum as an electrolytic material.

In order to make the existing solutions more efficient there is a need to develop a Moringa oleifera gum biopolymer composition and a method to synthesize the biopolymer.

SUMMARY OF THE INVENTION

The present disclosure relates to a Moringa oleifera gum biopolymer composition and a method to synthesize the biopolymer. To improve the ionic conductivity of Moringa Gum

(MG) based biopolymer membranes, a 0.5 wt percent ionic salt of ammonium nitrate (NH 4NO3) was utilized as an addition. The addition of salt increases the amorphous nature of the membranes, as evidenced by X-ray diffractograms, and the composition of MG (1g) with 0.5 wt percent NH 4NO3 exhibits a high degree of amorphous nature. Fourier Transform Infra Red was used to investigate the development of complexes between MG and salt (FTIR). The low glass transition temperature of the produced MG based membrane with NH 4NO 3 is confirmed by a thermal behavioral analysis using Differential Scanning Calorimetry (DSC). At normal temperature, the solid polymer electrolyte MG (lg) containing 0.5 wt percent NH 4NO3 had an ionic conductivity of 2.66 x 10-3 S cm- 1

. In an embodiment, a Moringa oleifera gum biopolymer composition comprises: a Moringa oleifera gum of a molecular weight of 190 kDa; and an ammonium nitrate (NH 4NO 3) salt.

In an embodiment, a method 100 to synthesize the Moringa oleifera gum biopolymer with ammonium nitrate comprises the following steps: at step 102, dissolving the Moringa oleifera gum in a distilled water at a room temperature and stirring until a complete dissolution is achieved; at step 104, integrating a composition of 0.5wt% NH 4NO 3 into the Moringa oleifera gum polymeric solution and stirring continuously to obtain a homogeneous solution; at step 106, decanting the solution into a container and keeping the container at °C for drying and removing a solvent; and at step 108, attaining a brownish free standing flexible film wherein the flexible films is the biopolymer electrolyte Moringa oleifera gum.

To further clarify advantages and features of the present disclosure, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.

BRIEF DESCRIPTION OF FIGURES

These and other features, aspects, and advantages of the present disclosure will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:

Figure 1 illustrates a method to synthesize a biopolymer electrolyte Moringa oleifera gum in accordance with an embodiment of the present disclosure.

Figure 2 illustrates a pictorial representation of preparation of MG biopolymer membranes with NH 4NO3 in accordance with an embodiment of the present disclosure.

Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present disclosure. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.

DETAILED DESCRIPTION:

For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.

It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the invention and are not intended to be restrictive thereof.

Reference throughout this specification to "an aspect", "another aspect" or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrase "in an embodiment", "in another embodiment" and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures or components proceeded by "comprises...a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or other components or additional devices or additional sub-systems or additional elements or additional structures or additional components.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.

Embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings.

Referring to Figure 1 illustrates a method to synthesize a biopolymer electrolyte Moringa oleifera gum in accordance with an embodiment of the present disclosure. The method 100 to synthesize the Moringa oleifera gum biopolymer with ammonium nitrate comprises the following steps: at step 102, dissolving the Moringa oleifera gum in a distilled water at a room temperature and stirring until a complete dissolution is achieved; at step 104, integrating a composition of 0.5wt% NH 4NO3 into the Moringa oleifera gum polymeric solution and stirring continuously to obtain a homogeneous solution; at step 106, decanting the solution into a container and keeping the container at 600 C for drying and removing a solvent; and at step 108, attaining a brownish free standing flexible film wherein the flexible films is the biopolymer electrolyte Moringa oleifera gum.

In an embodiment, the method, wherein, the biopolymer electrolyte Moringa oleifera gum is synthesized by a solution casting method wherein, 1g of the Moringa oleifera gum was dissolved in the distilled water at room temperature and stirred for 24 hours until complete dissolution wherein, an incorporation of NH 4NO3 into a host matrix of the Moringa oleifera gum authenticates an amorphous domain enhancement with its low degree of a crystallinity value and wherein, a shift of an O-H band to a lower wave number side and a new N-0 band of the ammonium nitrate NH 4NO 3 ascertains a complexation between the Moringa oleifera gum and the ammonium nitrate (NH 4NO 3) salt.

In another embodiment, the method, wherein, a low glass transition temperature and a melting temperature of a mixture of the Moringa oleifera gum and the ammonium nitrate (NH 4NO3) salt exemplifies a role of plasticization of the salt and demonstrates the change from a glassy state to a flexible rubbery state wherein, the biopolymer electrolyte Moringa oleifera gum comprises a low relaxation time for an H+ species for a high conducting sample and wherein, a primary proton cell fabrication with a highest conducting membrane confirms an applicability of the Moringa oleifera gum as a battery material.

Figure 2 illustrates a pictorial representation of preparation of the Moringa oleifera biopolymer membranes with NH 4 NO3 in accordance with an embodiment of the present disclosure.

In an implementation, the biopolymer was made using a solution casting technique. At room temperature, 1g of the Moringa oleifera was dissolved in distilled water and agitated for 24 hours until completely dissolved. To obtain a homogenous solution, 0.5 wt% NH 4 NO 3

was added to the MG polymeric solution and agitated constantly. After that, the solution was decanted into petri plates and baked at 60°C to eliminate the solvent. Brownish free-standing flexible films have been achieved after a 48-hour drying period. Figure 2 shows a visual illustration of MG biopolymer membranes with NH 4NO 3 .

With its low degree of crystallinity values, the integration of NH 4NO 3 into the host matrix of MG verifies the amorphous domain enhancement. The complexation between MG and salt is determined by a shift of the O-H band to the lower wave number side and a new N-O band of NH 4NO 3 . Furthermore, the low glass transition temperature and melting temperature of the salted sample illustrate the function of salt plasticization and the transformation from a glassy to a flexible rubbery state. With an ideal salt composition of 0.5 wt% NH 4NO3 with MG, the highest conductivity on the order of 10-3 S cm-i is achieved. For the high conducting sample, the tangent spectra result predicts a short relaxation period for H +species. The development of a primary proton cell with the highest conductivity membrane validates the suitability of MG as a battery material.

The drawings and the forgoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment. For example, orders of processes described herein may be changed and are not limited to the manner described herein. Moreover, the actions of any flow diagram need not be implemented in the order shown; nor do all of the acts necessarily need to be performed. Also, those acts that are not dependent on other acts may be performed in parallel with the other acts. The scope of embodiments is by no means limited by these specific examples. Numerous variations, whether explicitly given in the specification or not, such as differences in structure, dimension, and use of material, are possible. The scope of embodiments is at least as broad as given by the following claims.

Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiments. However, the benefits, advantages, solutions to problems, and any component(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature or component of any or all the claims.

Claims

.. .AIM:

1. A Moringa oleifera gum-based biopolymer composition, the composition comprises:

a Moringa oleifera gum of a molecular weight of 190 kDa; and an ammonium nitrate (NH 4NO 3) salt.

2. The composition as claimed in claim 1, wherein, highest conductivity of an order of 2.660.02 x 10-3 S cm-1 and a high ionic transference number of 0.98 is attained with an optimum salt composition of 0.5wt% of the NH 4NO 3 with the Moringa oleifera gum.

3. A method to synthesize the Moringa oleifera gum based biopolymer with ammonium nitrate, the method comprises:

dissolving the Moringa oleifera gum in a distilled water at a room temperature and stirring until a complete dissolution is achieved;

integrating a composition of 0.5wt% NH 4NO3 into the Moringa oleifera gum polymeric solution and stirring continuously to obtain a homogeneous solution;

decanting the solution into a container and keeping the container at 600 C for drying and removing a solvent; and

attaining a brownish free standing flexible film wherein the flexible films is the biopolymer electrolyte Moringa oleifera gum.

4. The method as claimed in claim 1, wherein, the biopolymer electrolyte Moringa oleifera gum is synthesized by a solution casting method.

5. The method as claimed in claim 1, wherein, 1g of the Moringa oleifera gum was dissolved in the distilled water at room temperature and stirred for 24 hours until complete dissolution.

6. The method as claimed in claim 1, wherein, an incorporation of NH 4NO 3 into a host matrix of the Moringa oleifera gum authenticates an amorphous domain enhancement with its low degree of a crystallinity value.

7. The method as claimed in claim 6, wherein, a shift of an O-H band to a lower wave number side and a new N-O band of the ammonium nitrate NH 4NO 3 ascertains a complexation between the Moringa oleifera gum and the ammonium nitrate (NH 4NO 3) salt.

8. The method as claimed in claim 1, wherein, a low glass transition temperature and a melting temperature of a mixture of the Moringa oleifera gum and the ammonium nitrate (NH 4NO3) salt exemplifies a role of plasticization of the salt and demonstrates the change from a glassy state to a flexible rubbery state.

9. The method as claimed in claim 1, wherein, the biopolymer electrolyte Moringa oleifera gum comprises a low relaxation time for an H+ species for a high conducting sample.

10. The method as claimed in claim 1, wherein, a primary proton cell fabrication with a highest conducting membrane confirms an applicability of the Moringa oleifera gum as a battery material.

dissolving the Moringa oleifera gum in a distilled water at a room temperature and stirring 102 until a complete dissolution is achieved;

integrating a composition of 0.5wt% NH4NO3 into the Moringa oleifera gum polymeric solution and stirring continuously to obtain a homogeneous solution; 104

decanting the solution into a container and keeping the container at 60º C for drying and removing a solvent and removing a solvent; and 106 06

attaining a brownish free standing flexible film wherein the flexible films is the biopolymer 108 electrolyte Moringa oleifera gum;

Figure 1

Figure 2