Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes
This study presents a novel, green approach to tailoring the dielectric properties of starch by mechanical means alone, without chemical modification. The correlation between ball milling-induced structural changes and dielectric performance is reported for the first time using native arrowroot star...
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| Language: | English |
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Elsevier
2025-07-01
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| Series: | Results in Chemistry |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211715625003315 |
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| author | M. Ramya Rajita Ramanarayanan S. Esakki Muthu Karthik Kannan Jhelai Sahadevan A. Dinesh Lalitha Gnanasekaran Manikandan Ayyar S. Santhoshkumar |
| author_facet | M. Ramya Rajita Ramanarayanan S. Esakki Muthu Karthik Kannan Jhelai Sahadevan A. Dinesh Lalitha Gnanasekaran Manikandan Ayyar S. Santhoshkumar |
| author_sort | M. Ramya |
| collection | DOAJ |
| description | This study presents a novel, green approach to tailoring the dielectric properties of starch by mechanical means alone, without chemical modification. The correlation between ball milling-induced structural changes and dielectric performance is reported for the first time using native arrowroot starch, highlighting its potential as a sustainable material for eco-friendly electronic applications. The structure and characteristics of starch granules are drastically changed by ball milling. Ball milling reduces granule size and produces irregular, porous structures by destroying the spherical or oval geometry of raw starch (SR), according to SEM pictures. The XRD study reveals decrease of crystallinity from 28 % (SR) to 13 % (milled starch, SM), and the peaks that were typical of A-type starch vanished, signifying amorphization. The binding energies of the C1s and O1s peaks fluctuate in the XPS measurements, indicating oxidation state alterations and bond rupture. Raman spectroscopy, which shows a weakening of vibrational signals, further validates structural amorphization. Due to structural disturbance and decreased interfacial polarisation, dielectric measurements reveal decreased impedance, dielectric constant, and loss factor for SM. Due to higher resistance, SM has lesser electrical conductivity than SR. With SM showing a wider semicircle, which denotes more resistance and decreased charge carrier mobility, the Cole-Cole plot shows changed relaxation behaviour. |
| format | Article |
| id | doaj-art-a373dcfa74e84bb493623af25cc8f6f5 |
| institution | Kabale University |
| issn | 2211-7156 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Chemistry |
| spelling | doaj-art-a373dcfa74e84bb493623af25cc8f6f52025-08-20T04:00:33ZengElsevierResults in Chemistry2211-71562025-07-011610234810.1016/j.rechem.2025.102348Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomesM. Ramya0Rajita Ramanarayanan1S. Esakki Muthu2Karthik Kannan3Jhelai Sahadevan4A. Dinesh5Lalitha Gnanasekaran6Manikandan Ayyar7S. Santhoshkumar8Department of Physics, Government Victoria College, Palakkad, (Affiliated to Calicut University), Kerala-678001,IndiaDepartment of Physics, Government Victoria College, Palakkad, (Affiliated to Calicut University), Kerala-678001,India; Corresponding author.Centre for Material Science, Karpagam Academy of Higher Education, Coimbatore - 641021, India; Department of Physics, Karpagam Academy of Higher Education, Coimbatore - 641021, IndiaInstitute of Agricultural Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai -602105, IndiaCentre for Energy and Environment, Department of Physics, Karpagam Academy of Higher Education, Coimbatore - 641 021, IndiaDepartment of Chemistry, K. Ramakrishnan College of Engineering (Autonomous), Affiliated to the Anna University, Samayapuram, Trichy 621 112, Tamil Nadu, IndiaInstituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, ChileDepartment of Chemistry, Karpagam Academy of Higher Education, Coimbatore 641021, Tamil Nadu, India; Centre for Materials Chemistry, Karpagam Academy of Higher Education, Coimbatore 641021, Tamil Nadu, IndiaDepartment of Biochemistry, Saveetha Medical College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, Tamil Nadu, IndiaThis study presents a novel, green approach to tailoring the dielectric properties of starch by mechanical means alone, without chemical modification. The correlation between ball milling-induced structural changes and dielectric performance is reported for the first time using native arrowroot starch, highlighting its potential as a sustainable material for eco-friendly electronic applications. The structure and characteristics of starch granules are drastically changed by ball milling. Ball milling reduces granule size and produces irregular, porous structures by destroying the spherical or oval geometry of raw starch (SR), according to SEM pictures. The XRD study reveals decrease of crystallinity from 28 % (SR) to 13 % (milled starch, SM), and the peaks that were typical of A-type starch vanished, signifying amorphization. The binding energies of the C1s and O1s peaks fluctuate in the XPS measurements, indicating oxidation state alterations and bond rupture. Raman spectroscopy, which shows a weakening of vibrational signals, further validates structural amorphization. Due to structural disturbance and decreased interfacial polarisation, dielectric measurements reveal decreased impedance, dielectric constant, and loss factor for SM. Due to higher resistance, SM has lesser electrical conductivity than SR. With SM showing a wider semicircle, which denotes more resistance and decreased charge carrier mobility, the Cole-Cole plot shows changed relaxation behaviour.http://www.sciencedirect.com/science/article/pii/S2211715625003315StarchDielectricImpedanceConductivityArrowrootRaman spectroscopy |
| spellingShingle | M. Ramya Rajita Ramanarayanan S. Esakki Muthu Karthik Kannan Jhelai Sahadevan A. Dinesh Lalitha Gnanasekaran Manikandan Ayyar S. Santhoshkumar Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes Results in Chemistry Starch Dielectric Impedance Conductivity Arrowroot Raman spectroscopy |
| title | Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes |
| title_full | Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes |
| title_fullStr | Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes |
| title_full_unstemmed | Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes |
| title_short | Investigation of dielectric properties of starch nanoparticles derived from arrowroot (Maranta arundinaceae L.) rhizomes |
| title_sort | investigation of dielectric properties of starch nanoparticles derived from arrowroot maranta arundinaceae l rhizomes |
| topic | Starch Dielectric Impedance Conductivity Arrowroot Raman spectroscopy |
| url | http://www.sciencedirect.com/science/article/pii/S2211715625003315 |
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