Preparation and characterization of starch nanocomposite embedded with functionalized <scp>MWCNT</scp>: Investigation of optical, morphological, thermal, and copper ions adsorption properties

Mallakpour, Shadpour; Ezhieh, Ahmadreza Nezamzadeh

doi:10.1002/adv.21878

Cited by 14 publications

(3 citation statements)

References 33 publications

(81 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhang et al [ 10 ] and Tian et al [ 11 ] have reported that ultrasound can improve the ability of starch to include small molecules. Furthermore, the use of ultrasonication for the preparation of inclusions is a well–established method [ 12 , 13 , 14 ]. Moreover, not only does the ultrasonication process promote mass transfer, but suitable ultrasonication conditions do not change the crystalline types of the starch [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

The Fluorescence Response of Four Crystalline Starches According to Ultrasound-Assisted Starch-Salicylic Acid Inclusions

Pei

Wang

et al. 2023

Foods

View full text Add to dashboard Cite

Fluorescence has shown its superior performance in the fields of starch physicochemical properties, starch–based materials, and the interactions of starch with small molecules. However, it has not been well explored in the fluorescence characteristics of starch. Herein, the fluorescence properties of four crystalline starches (A–type tapioca starch, B–type potato starch, C–type pea starch, and V–type starch, prepared with corn starch and stearic acid) were investigated using salicylic acid (SA) as an indicator. The results of inverted fluorescence microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis indicated that SA could be included by starch. X–ray diffraction analysis further demonstrated that the inclusion of SA did not change the crystalline of the four crystal types of starches, which could provide a prerequisite for comparing the different fluorescence properties of the four crystal types of starches. Fluorescence enhancements of the four inclusions were 264.5 (B–type), 206 (C–type), 51.2 (V–type), and 28 (A–type). These results provide new insights for analyzing the fluorescence response of starch.

show abstract

Section: Introductionmentioning

confidence: 99%

The Fluorescence Response of Four Crystalline Starches According to Ultrasound-Assisted Starch-Salicylic Acid Inclusions

Pei

Wang

et al. 2023

Foods

View full text Add to dashboard Cite

show abstract

“…Amylose or poly-α-1, 4-D-glucan molecule is primarily a linear construction of α-1,4 connected glucose parts. On the other hand, amylopectin or poly-α-1,4-D-glucan and α-1,6-D-glucan are a branched construction made by short α-1,4 parts connected by α-1,6 bonds [11]. In this work, starch due to having large number of hydroxyl end-groups and being naturally abundant, was selected as a functionalization agent for magnetite and such structure would be able to improve the biosorption capacity of the Sr(II).…”

Section: Introductionmentioning

confidence: 99%

Strontium (II) Biosorption Studies on Starch-Functionalized Magnetic Nanobiocomposites Using Full Factorial Design Method

et al. 2022

View full text Add to dashboard Cite

The purpose of this research was to fabricate starch based magnetic nanobiocomposites using 2 different starch types (corn and wheat) and to examine the effects of some experimental parameters (such as starch concentration, NaOH concentration and aging time of nanoparticles) that play a role in the synthesis products. The characterization of the starch-based magnetic-nanobiocomposite materials were realized with several techniques. The usability of starch-based magnetic-nanobiocomposite materials, which can provide rapid separation with their magnetic properties and are not toxic, in removing Sr (II) ions from aqueous solutions has been investigated. The parameters affecting the biosorption were investigated using a full factorial experimental design. In the biosorption study, pH, temperature, initial Sr(II) concentration and contact time were determined as four independent variables. The regression coe cients were found using the least squares method and the response surface graphs were created according to the polynomial equation obtained from the full factorial experimental design.ANOVA (analysis of variance) analysis within the 95% con dence interval of the model applied for the full factorial experimental design was examined and the compatibility of the model with the experimental ndings was examine. The composition and chemical state of the magnetic nanobiocomposites were investigated by XPS analysis after Sr(II) biosorption. For the purpose of determine the adsorption model, the relevant parameters were calculated using Langmuir, Freundlich and Dubinin-Radushkevich isotherms. Gibbs free energy change, enthalpy and entropy values, which are the values of adsorption thermodynamics, were calculated.Recently, magnetic sorbents, especially those of vegetable origin have become very popular to remove impurities in water because they have properties such as low cost, easy preparation, fast sorbing ability,

show abstract

“…It is well known that a sudden increase in conductivity occurs for these composites in a relatively narrow concentration range for the so-called percolation threshold of the filler [3]. Recently, polymers prepared from renewable resources as matrices for solid conducting composites, including starch [4][5][6][7][8][9][10][11][12], cellulose [13], pectin [14], and chitosan [15], have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Thermoplastic Starch–Based Composite Reinforced by Conductive Filler Networks: Physical Properties and Electrical Conductivity Changes during Cyclic Deformation

et al. 2021

View full text Add to dashboard Cite

Conductive polymer composites (CPC) from renewable resources exhibit many interesting characteristics due to their biodegradability and conductivity changes under mechanical, thermal, chemical, or electrical stress. This study is focused on investigating the physical properties of electroconductive thermoplastic starch (TPS)–based composites and changes in electroconductive paths during cyclic deformation. TPS–based composites filled with various carbon black (CB) contents were prepared through melt processing. The electrical conductivity and physicochemical properties of TPS–CB composites, including mechanical properties and rheological behavior, were evaluated. With increasing CB content, the tensile strength and Young’s modulus were found to increase substantially. We found a percolation threshold for the CB loading of approximately 5.5 wt% based on the rheology and electrical conductivity. To observe the changing structure of the conductive CB paths during cyclic deformation, both the electrical conductivity and mechanical properties were recorded in parallel using online measurements. Moreover, the instant electrical conductivity measured online during mechanical deformation of the materials was taken as the parameter indirectly describing the structure of the conductive CB network. The electrical conductivity was found to increase during five runs of repeated cyclic mechanical deformations to constant deformation below strain at break, indicating good recovery of conductive paths and their new formation.

show abstract

Preparation and characterization of starch nanocomposite embedded with functionalized MWCNT: Investigation of optical, morphological, thermal, and copper ions adsorption properties

Cited by 14 publications

References 33 publications

The Fluorescence Response of Four Crystalline Starches According to Ultrasound-Assisted Starch-Salicylic Acid Inclusions

The Fluorescence Response of Four Crystalline Starches According to Ultrasound-Assisted Starch-Salicylic Acid Inclusions

Strontium (II) Biosorption Studies on Starch-Functionalized Magnetic Nanobiocomposites Using Full Factorial Design Method

Thermoplastic Starch–Based Composite Reinforced by Conductive Filler Networks: Physical Properties and Electrical Conductivity Changes during Cyclic Deformation

Contact Info

Product

Resources

About