Preparation And Properties Of Kenaf Bast Fiber Filled (Plasticized) Poly(Lactic Acid) Composites
Komposit poli(Iaktik asid) diplastik (p-PLA) terisi gentian kayu kenaf (KBF) telah disediakan dan dikaji secara berperingkat. Pertamanya, poli(Iaktik asid) (PLA) telah diperlembutkan dengan 5 hingga 20% berat poli(etilena glikol) (PEG) menggunakan pencampur dalaman. Adunan dengan 10% berat PEG di...
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| Format: | Thesis |
| Language: | en |
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2008
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| Online Access: | http://eprints.usm.my/31364/1/SUGARTI_RAMARAD.pdf http://eprints.usm.my/31364/ |
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| author | Ramarad, Suganti |
| author_facet | Ramarad, Suganti |
| author_sort | Ramarad, Suganti |
| building | Hamzah Sendut Library |
| collection | Institutional Repository |
| content_provider | Universiti Sains Malaysia |
| content_source | USM Institutional Repository |
| continent | Asia |
| country | Malaysia |
| description | Komposit poli(Iaktik asid) diplastik (p-PLA) terisi gentian kayu kenaf (KBF)
telah disediakan dan dikaji secara berperingkat. Pertamanya, poli(Iaktik asid) (PLA)
telah diperlembutkan dengan 5 hingga 20% berat poli(etilena glikol) (PEG)
menggunakan pencampur dalaman. Adunan dengan 10% berat PEG dipilih sebagai
matriks komposit kerana ia mempunyai kekuatan hentaman dan pemanjangan takat
putus yang terbaik. Kedua, PLA dicangkuk maleik anhidrat (MAPLA) berjaya
dihasilkan dengan 0.22% pencangkukan melalui kaedah pencangkukan reaktif
Komposit p-PLA/KBF telah disebatikan di dalam pencampur dalaman dan diacuan
mampat ke bentuk sampel ujian. Kandungan KBF diubah dari 10 hingga 40% berat.
Pencirian telah dilakukan melalui ujian tensil dan hentaman, analisis mekanikal
dinamik, penyerapan air, penanaman dalam tanah dan pencuacaan semulajadi. Pad a
pembebanan 40% berat KBF, kekuatan tensil dan modulus masing-masing
meningkat sebanyak 120% dan 213%, manakala pemanjangan takat putus dan
kekuatan hentaman masing-masing menurun sebanyak 99% dan 52%, berbanding pPLA
tidak terisi KBF.
Kenaf bast fiber (KBF) filled plasticized poly(lactic acid) (p-PLA)
composites was prepared and examined stage by stage in this study. Firstly,
poly(lactic acid) (PLA) was plasticized with 5 up to 20 wt% poly(ethylene glycol)
(PEG) via internal mixer. Blend with 10 wt% PEG was chosen as matrix for
composite as it showed the best impact strength and elongation at break. Secondly,
maleic anhydride grafted PLA (MAPLA) was successfully produced with 0.22%
grafting using reactive grafting method, and used as a compatibilizer for the
composite system. p-PLAlKBF composite was compounded via internal mixer and
compression molded into test specimens. KBF loading was varied from 10 to 40
wt%. Characterization was done by means of tensile and impact testing, dynamic
mechanical analysis, water absorption, soil burial and natural weathering. At 40 wt%
KBF loading, tensile strength and modulus improved by 120% and 213%
respectively, while strain at break and impact strength dropped by 99% and 52%
respectively compared to neat p-PLA. |
| format | Thesis |
| id | my.usm.eprints.31364 |
| institution | Universiti Sains Malaysia |
| language | en |
| publishDate | 2008 |
| record_format | eprints |
| spelling | my.usm.eprints.31364 http://eprints.usm.my/31364/ Preparation And Properties Of Kenaf Bast Fiber Filled (Plasticized) Poly(Lactic Acid) Composites Ramarad, Suganti TN1-997 Mining engineering. Metallurgy Komposit poli(Iaktik asid) diplastik (p-PLA) terisi gentian kayu kenaf (KBF) telah disediakan dan dikaji secara berperingkat. Pertamanya, poli(Iaktik asid) (PLA) telah diperlembutkan dengan 5 hingga 20% berat poli(etilena glikol) (PEG) menggunakan pencampur dalaman. Adunan dengan 10% berat PEG dipilih sebagai matriks komposit kerana ia mempunyai kekuatan hentaman dan pemanjangan takat putus yang terbaik. Kedua, PLA dicangkuk maleik anhidrat (MAPLA) berjaya dihasilkan dengan 0.22% pencangkukan melalui kaedah pencangkukan reaktif Komposit p-PLA/KBF telah disebatikan di dalam pencampur dalaman dan diacuan mampat ke bentuk sampel ujian. Kandungan KBF diubah dari 10 hingga 40% berat. Pencirian telah dilakukan melalui ujian tensil dan hentaman, analisis mekanikal dinamik, penyerapan air, penanaman dalam tanah dan pencuacaan semulajadi. Pad a pembebanan 40% berat KBF, kekuatan tensil dan modulus masing-masing meningkat sebanyak 120% dan 213%, manakala pemanjangan takat putus dan kekuatan hentaman masing-masing menurun sebanyak 99% dan 52%, berbanding pPLA tidak terisi KBF. Kenaf bast fiber (KBF) filled plasticized poly(lactic acid) (p-PLA) composites was prepared and examined stage by stage in this study. Firstly, poly(lactic acid) (PLA) was plasticized with 5 up to 20 wt% poly(ethylene glycol) (PEG) via internal mixer. Blend with 10 wt% PEG was chosen as matrix for composite as it showed the best impact strength and elongation at break. Secondly, maleic anhydride grafted PLA (MAPLA) was successfully produced with 0.22% grafting using reactive grafting method, and used as a compatibilizer for the composite system. p-PLAlKBF composite was compounded via internal mixer and compression molded into test specimens. KBF loading was varied from 10 to 40 wt%. Characterization was done by means of tensile and impact testing, dynamic mechanical analysis, water absorption, soil burial and natural weathering. At 40 wt% KBF loading, tensile strength and modulus improved by 120% and 213% respectively, while strain at break and impact strength dropped by 99% and 52% respectively compared to neat p-PLA. 2008-06 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/31364/1/SUGARTI_RAMARAD.pdf Ramarad, Suganti (2008) Preparation And Properties Of Kenaf Bast Fiber Filled (Plasticized) Poly(Lactic Acid) Composites. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | TN1-997 Mining engineering. Metallurgy Ramarad, Suganti Preparation And Properties Of Kenaf Bast Fiber Filled (Plasticized) Poly(Lactic Acid) Composites |
| title | Preparation And Properties Of Kenaf Bast Fiber
Filled (Plasticized) Poly(Lactic Acid) Composites
|
| title_full | Preparation And Properties Of Kenaf Bast Fiber
Filled (Plasticized) Poly(Lactic Acid) Composites
|
| title_fullStr | Preparation And Properties Of Kenaf Bast Fiber
Filled (Plasticized) Poly(Lactic Acid) Composites
|
| title_full_unstemmed | Preparation And Properties Of Kenaf Bast Fiber
Filled (Plasticized) Poly(Lactic Acid) Composites
|
| title_short | Preparation And Properties Of Kenaf Bast Fiber
Filled (Plasticized) Poly(Lactic Acid) Composites
|
| title_sort | preparation and properties of kenaf bast fiber
filled (plasticized) poly(lactic acid) composites |
| topic | TN1-997 Mining engineering. Metallurgy |
| url | http://eprints.usm.my/31364/1/SUGARTI_RAMARAD.pdf http://eprints.usm.my/31364/ |
| url_provider | http://eprints.usm.my/ |