MARC details
| 000 -LEADER |
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| fixed length control field |
04197ntm a2200337 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251125111042.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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| fixed length control field |
a||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250519t20252025my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0010085 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMPSA |
| Language of cataloging |
eng |
| Transcribing agency |
UMPSA |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKKP .A44 2025 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Alfeorina Alfred, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Functionalization of segregated MWCNTS/AGNPS to reduce the percolation threshold of uhmwpe composite / |
| Statement of responsibility, etc. |
Alfeorina Alfred |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMPSA, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2025 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Date of production, publication, distribution, manufacture, or copyright notice |
© 2025 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xvii, 157 pages : |
| Other physical details |
illustrations (some color) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Chemical and Process Engineering Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Science) -- Universiti Malaysia Pahang – 2025 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Conductive polymer composites (CPCs) combine the flexibility and lightweight properties of polymers with the high electrical conductivity of fillers. However, achieving low percolation threshold—the transition from an insulator to a conductor—often requires high filler content, which increases costs and diminishes mechanical and thermal properties. This study explores the functionalization of multi-walled carbon nanotubes (MWCNTs) and silver nanoparticles (AgNPs) with ester and amide groups to enhance dispersion and interaction within an ultra-high molecular weight polyethylene (UHMWPE) matrix. The goal was to reduce the percolation threshold while improving thermal and mechanical properties at lower filler concentrations. Composites were fabricated using compression molding with unmodified (UMCNT) and modified (MOCNT) MWCNT filler loadings from 0.25 wt.% to 2.0 wt.% and hybrid filler ratios of MWCNT:AgNPs at 100:0, 75:25, 50:50, 25:75, and 0:100. Fourier Transform Infrared Spectroscopy (FTIR) confirmed successful surface modification of the fillers. Mechanical testing showed significant improvements: tensile strength, yield strength, and elongation at break increased by 8.90%, 3.69%, and 7.45%, respectively, for modified MWCNT (MOCNT/UHMWPE) composites compared to unmodified MWCNTs (UMCNTs/UHMWPE) at 0.50 wt.%. Hybrid composites demonstrated even better performance, with tensile strength, yield strength, and elongation at break increasing by 14.79%, 12.58%, and 4.45% compared to pure MOCNT composites, due to synergistic effects of MWCNTs and AgNPs. Morphological analysis using Scanning Electron Microscopy (SEM) revealed reduced agglomeration in MOCNT/UHMWPE composites compared to UMCNT/UHMWPE. Field Emission SEM and Energy Dispersive X-ray spectroscopy (FESEM-EDX) confirmed excellent filler dispersion, contributing to enhanced properties. The modified MWCNTs achieved a percolation threshold at 1.0 wt.% with a maximum electrical conductivity of 1.80 × 10⁻³ S/cm, compared to 2.40 × 10⁻⁴ S/cm for unmodified MWCNT composites. Hybrid composites further enhanced electrical performance, achieving 6.05 × 10⁻⁴ S/cm at a 25:75 MWCNT:AgNP ratio. Thermal analysis via Differential Scanning Calorimetry (DSC) revealed a 25.95% increase in crystallinity for MOCNT/UHMWPE composites compared to UMCNT/UHMWPE, with hybrid composites achieving up to 63.58% crystallinity at a 50:50 ratio. Thermogravimetric Analysis (TGA) indicated increased degradation temperatures, up to 484 °C for modified composites and 464 °C for hybrid composites at 50:50, signifying enhanced thermal stability. These findings demonstrate that functionalized MWCNTs and AgNPs as hybrid fillers effectively reduce material costs and improve the conductivity, mechanical strength, and thermal stability of CPCs, making them viable for advanced applications in electronics, sensors, and energy storage devices. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Chemical and Process Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Thesis |
| General subdivision |
Dissertations |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Thesis |