MARC details
| 000 -LEADER |
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| fixed length control field |
04832ntm a2200373 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 |
20251125105738.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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| fixed length control field |
t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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| fixed length control field |
ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
201016t2 2 M a|||fram|| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0008921(Local) |
| Qualifying information |
hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMP |
| Language of cataloging |
eng |
| Transcribing agency |
UMP |
| 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 .H36 2019 r Thesis |
| 100 0# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Abu Hannifa Abdullah, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Sonication assisted liquid phase exfoliation of graphene using instant coffee : |
| Remainder of title |
the mechanical and thermal properties of PVA/graphene nanocomposite / |
| Statement of responsibility, etc. |
Abu Hannifa Abdullah |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMP, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2019 |
| 264 #4 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
|---|
| Date of production, publication, distribution, manufacture, or copyright notice |
© 2019 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
xv, 200 pages : |
| Other physical details |
illustrations (some color) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
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| Content type term |
text |
| Source |
rdacontent |
| 336 ## - CONTENT TYPE |
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| Content type term |
text |
| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Media type term |
unmediated |
| Source |
rdamedia |
| 337 ## - MEDIA TYPE |
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| Media type term |
computer |
| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Carrier type term |
volume |
| Source |
rdacarrier |
| 338 ## - CARRIER TYPE |
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| Carrier type term |
computer disc |
| Source |
rdacarrier |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| File type |
text file |
| Encoding format |
PDF |
| Source |
rda |
| 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 (Doctor of Philosophy in Chemical Engineering) -- Universiti Malaysia Pahang – 2019 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Graphene is known as a wonder material which can be applied to various valuable application. Sonication assisted liquid phase exfoliation (LPE) is one of the best methods to produce graphene for the polymer filler application. The advantages of this method include defect-free graphene, economically viable and simple processing technique. However, most of the LPE processing method involved the use of highly toxic and costly substance as dispersing solvents such as N-methyl-2-pyrrolidone or Dimethylformamide. This is the biggest drawback for this method and therefore in this thesis, a new water based dispersing agent is introduced to counter the existing problem while utilising green technology. Herein, instant coffee was introduced as a dispersant to replace the mentioned solvents. The reason behind choosing instant coffee as dispersant is due to the Chlorogenic acid (CA) content in the coffee which assist the exfoliation process. Instant coffee-based graphene (GC), was produced by sonication assisted LPE process and the output was confirmed by using Ultraviolet visible spectroscopy, Transmission electron microscopy, Atomic force microscopy and Raman spectroscopy. The features of the GC were evaluated by the thickness and mean length of the graphene which were recorded at the range of ~1.7 nm (4 layers) and ~101-200 nm respectively. Centrifugation was performed to control the lateral size and thickness of graphene and it was found out that higher centrifugation speed lead to lower mean length and layer of graphene as well as the amount of the graphene. As confirmed by Raman spectroscopy, the graphene was found out to have less defect compared to graphene oxide. The GC was also tested for the electronic properties and the result shown the bandgap value of the graphene was 3.1eV as well as the photoluminescence which has shown the broadening and shifts for the florescence peak. The results give potential to the produced graphene to be applied in electronic application such as semiconductor and supercapacitor. The XPS reveal that the GC is a functionalised graphene with about ~30% of functional group attached. To study the scalability of the production method, the effects of the processing parameter for GC were studied and the exponential factor for the concentration of initial graphite, sonication time, sonication power and volume were obtained. The use of Central Composite Design (CCD) to get the highest concentration of graphene solution was also done and was verified. The highest concentration achieved was at about ≈ 0.0412 mg/ml. The produced graphene GC was then used as a filler for PVA nanocomposite and the properties of the nanocomposite were studied. The increase up to ~86% for the tensile strength and 83% for Modulus Young were recorded for the nanocomposite compared to the pristine PVA while 8°C increase in thermal stability and only 1°C increase in melting temperature was recorded. In conclusion, the use of instant coffee to produce graphene (GC) has been verified and extensively studied. Furthermore, the applicability of the GC has also been shown from the improvement of the mechanical and thermal properties of the GC filled PVA nanocomposite. This study will likely contribute to the advancement of the cost-effective graphene production and supporting the development of the PVA/graphene nanocomposite to be widely used for various suitable application. |
| 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 |
|---|
| Topical term or geographic name entry element |
Theses |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Restricted Collection |