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Neungruthai Tippo. Microwave graphene oxide : a novel sorbent for slow release of aroma compounds. Master's Degree(Engineering Technology). Thammasat University. Thammasat University Library. : Thammasat University, 2016.
Microwave graphene oxide : a novel sorbent for slow release of aroma compounds
Name: Neungruthai Tippo
keyword:
Reduced graphene oxide
LCSH:
Graphene
;
Menthol
;
Thymol
;
Geraniol
Abstract:
Aromatherapy products are in demand all over the world. A wide variety of products is made to meet this demand, such as air spray, candle, diffuser sheet, incense, perfume reed diffuser, potpourri, and scented gel. However, the scented lifetimes of those products are usually quite short. This work studies the use of microwave graphene oxide for use as a novel sorbent material for control release of aroma compounds, microwave graphene oxide (mGO). mGO can be easily synthesized using microwave at 700 watts within 1 minute which is a simple and rapid. Aroma compounds used in this work including menthol, thymol, citronellol, and geraniol were loaded into microwave graphene oxide. The release performance of the mGO was studied by the thermogravimetric analysis, the weights of the composites were monitored at the temperature of 80°C until all of the aroma compounds evaporated. When comparing the results of mGO with traditional essential oil reed diffuser and the pure aroma compounds, it was found that mGO can significantly slow down the menthol release rate compared to that of the pure menthol up to 8 times slower than the pure menthol. In addition, mGO can slow down the release rate of thymol and citronellol by about 3 and 4 times, respectively. Conversely, geraniol on mGO has a fast release rate compared to pure geraniol comparing to the pure substances around 3 times. The interaction of composites were also studied using Fourier transform infrared spectroscopy (FTIR) and 1H-NMR which indicates that mGO changes the chemical structure of menthol and geraniol leading to the slow release of menthol and fast release of geraniol. While mGO has a few effect on the release rate of thymol and citronellol, as it is only physical absorption. The release rate of thymol and citronellol adsorbed on the mGO are not changed significantly
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Paiboon Sreearunothai
Role:
advisor
Created:
2016
Modified:
2021-06-01
Issued:
2021-06-01
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of Engineering
Level: Master's Degree
Descipline: Engineering Technology
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.022366 วินาที
Neungruthai Tippo
| Title | Contributor | Type |
|---|---|---|
| Microwave graphene oxide : a novel sorbent for slow release of aroma compounds
มหาวิทยาลัยธรรมศาสตร์ Neungruthai Tippo | Paiboon Sreearunothai | วิทยานิพนธ์/Thesis |
Paiboon Sreearunothai