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  4. PROCESSING AND CHARACTERIZATION OF POLYMERS: A COMPREHENSIVE STUDY ON THERMAL AND ELECTRICAL PROPERTIES

PROCESSING AND CHARACTERIZATION OF POLYMERS: A COMPREHENSIVE STUDY ON THERMAL AND ELECTRICAL PROPERTIES

File(s)
Lee_cornell_0058O_12045.pdf (2.7 MB)
No Access Until
2026-06-17
Permanent Link(s)
https://doi.org/10.7298/ss6y-r718
https://hdl.handle.net/1813/115837
Collections
Cornell Theses and Dissertations
Author
Lee, Jaejun
Abstract

A dual investigation merges lunar power transmission and neuromodulation in polymer applications. In the first part, nanocomposites for a high-voltage power transmission on the moon enhance thermal conductivity (k) and electromagnetic shielding effectiveness (EMI SE) by incorporating hexagonal boron nitride (h-BN), MXene (Ti3C2), and multi-walled carbon nanotubes (MWCNT) into polytetrafluoroethylene (PTFE). A unique mixing procedure ensures optimal homogeneity, resulting in exceptional k and thermal/electrical percolation. Advanced techniques, including laser diffraction analysis (LDA), laser flash analysis (LFA), differential scanning calorimetry (DSC), dielectric spectroscopy, and 4-point probe, provide insights into filler size and percolation dynamics impacting thermal/electrical properties. The second part explores the photothermal effect of confined water encapsulated in biodegradable nanoparticles for non-invasive neuromodulation. Electrospraying and double emulsion methods are optimized, confirming the photothermal effect through temperature profiles from IR camera measurement. The study concludes with recommendations, addressing limitations and proposing future directions for comprehensive advancements.

Description
54 pages
Date Issued
2024-05
Keywords
Confined Water
•
Electrical Conductivity
•
Electromagnetic Interference Shielding Effectiveness
•
Percolation
•
Photothermal Effect
•
Thermal Conductivity
Committee Chair
Tian, Zhiting
Committee Member
Ober, Christopher
Degree Discipline
Materials Science and Engineering
Degree Name
M.S., Materials Science and Engineering
Degree Level
Master of Science
Rights
Attribution 4.0 International
Rights URI
https://creativecommons.org/licenses/by/4.0/
Type
dissertation or thesis
Link(s) to Catalog Record
https://newcatalog.library.cornell.edu/catalog/16575556

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