Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer
A large amount of waste cooking oil has become an environmental issue around the world. This oil is renewable and biodegradable than the corresponding products made from petroleum sources. The major concern in this study focuses on the resistance of the biopolymer to ultraviolet (UV) light exp...
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| Format: | Thesis |
| Language: | English English |
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2015
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| Online Access: | http://eprints.uthm.edu.my/1687/1/24p%20SITI%20RAHMAH%20MOHID.pdf http://eprints.uthm.edu.my/1687/2/SITI%20RAHMAH%20MOHID%20WATERMARK.pdf |
| _version_ | 1796868508439543808 |
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| author | Mohid, Siti Rahmah |
| author_facet | Mohid, Siti Rahmah |
| author_sort | Mohid, Siti Rahmah |
| collection | UTHM |
| description | A large amount of waste cooking oil has become an environmental issue around the
world. This oil is renewable and biodegradable than the corresponding products
made from petroleum sources. The major concern in this study focuses on the
resistance of the biopolymer to ultraviolet (UV) light exposure. The virgin oil (VO)
and waste oil (WO) was converted into biomonomer. By adding biomonomer with
an appropriate amount of 4, 4’-methylene diphenyl diisocyanate (MDI) and solvent,
the virgin oil polymer (VOP) and waste oil polymer (WOP) were produced. The
biopolymer (BP) were added with low loading metal oxide filler which is 2.5, 5, 7.5
and 10 % of titanium dioxide (TiO2) to form biopolymer composite (BPC). The
resistance to UV light and mechanical properties of BP and BPC were determined
after exposure the thin films in UV weatherometer for an extended period of time at
250, 500, 750,1000, 2000 and 3000 hours. The results based on the spectroscopic
analysis of UV-Vis and FTIR confirmed the photodegradation processes of BP and
BPC of VOP and WOP. The increasing absorbance in UV-Vis spectra indicated the
formation of quinone after UV-irradiation of BP and BPC of VOP and WOP.
Furthermore, BP thin films shows rapid loss of tensile strength but the increased
loading of TiO2 can improve mechanical performance. Visual inspection based on
the colour changes of the thin films showed quinone (yellow) formation of the
irradiated films of BP and BPC of VOP and WOP. As a conclusion, the effect of
prolonged exposure to UV light, in general promotes photo degradation for BP but
BPC gives slower chemical modification. The innovative biopolymer composite
were successfully designed and developed by adding the TiO2 as UV stabilizer to
reduce the photo-degradation of the biopolymer. |
| first_indexed | 2024-03-05T21:40:49Z |
| format | Thesis |
| id | uthm.eprints-1687 |
| institution | Universiti Tun Hussein Onn Malaysia |
| language | English English |
| last_indexed | 2024-03-05T21:40:49Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | uthm.eprints-16872021-10-04T08:38:48Z http://eprints.uthm.edu.my/1687/ Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer Mohid, Siti Rahmah TP Chemical technology TP248.13-248.65 Biotechnology A large amount of waste cooking oil has become an environmental issue around the world. This oil is renewable and biodegradable than the corresponding products made from petroleum sources. The major concern in this study focuses on the resistance of the biopolymer to ultraviolet (UV) light exposure. The virgin oil (VO) and waste oil (WO) was converted into biomonomer. By adding biomonomer with an appropriate amount of 4, 4’-methylene diphenyl diisocyanate (MDI) and solvent, the virgin oil polymer (VOP) and waste oil polymer (WOP) were produced. The biopolymer (BP) were added with low loading metal oxide filler which is 2.5, 5, 7.5 and 10 % of titanium dioxide (TiO2) to form biopolymer composite (BPC). The resistance to UV light and mechanical properties of BP and BPC were determined after exposure the thin films in UV weatherometer for an extended period of time at 250, 500, 750,1000, 2000 and 3000 hours. The results based on the spectroscopic analysis of UV-Vis and FTIR confirmed the photodegradation processes of BP and BPC of VOP and WOP. The increasing absorbance in UV-Vis spectra indicated the formation of quinone after UV-irradiation of BP and BPC of VOP and WOP. Furthermore, BP thin films shows rapid loss of tensile strength but the increased loading of TiO2 can improve mechanical performance. Visual inspection based on the colour changes of the thin films showed quinone (yellow) formation of the irradiated films of BP and BPC of VOP and WOP. As a conclusion, the effect of prolonged exposure to UV light, in general promotes photo degradation for BP but BPC gives slower chemical modification. The innovative biopolymer composite were successfully designed and developed by adding the TiO2 as UV stabilizer to reduce the photo-degradation of the biopolymer. 2015-05 Thesis NonPeerReviewed text en http://eprints.uthm.edu.my/1687/1/24p%20SITI%20RAHMAH%20MOHID.pdf text en http://eprints.uthm.edu.my/1687/2/SITI%20RAHMAH%20MOHID%20WATERMARK.pdf Mohid, Siti Rahmah (2015) Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer. Masters thesis, Universiti Tun Hussein Onn Malaysia. |
| spellingShingle | TP Chemical technology TP248.13-248.65 Biotechnology Mohid, Siti Rahmah Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer |
| title | Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer |
| title_full | Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer |
| title_fullStr | Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer |
| title_full_unstemmed | Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer |
| title_short | Photodegradation of biopolymer doped with titanium dioxide (TiO2) as ultraviolet (UV) stabilizer |
| title_sort | photodegradation of biopolymer doped with titanium dioxide tio2 as ultraviolet uv stabilizer |
| topic | TP Chemical technology TP248.13-248.65 Biotechnology |
| url | http://eprints.uthm.edu.my/1687/1/24p%20SITI%20RAHMAH%20MOHID.pdf http://eprints.uthm.edu.my/1687/2/SITI%20RAHMAH%20MOHID%20WATERMARK.pdf |
| work_keys_str_mv | AT mohidsitirahmah photodegradationofbiopolymerdopedwithtitaniumdioxidetio2asultravioletuvstabilizer |