Santiagoo, Ragunathan (2013) Characterization And Properties Of Polypropylene Recycled Acrylonitrile Butadiene Rubber Rice Husk Powder Composites. [Teaching Resource] (Submitted)
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Abstract
Komposit elastomer termoplastik bagi adunan polipropilena (PP)/ getah kitar semula akrilonitril butadiene (NBRr)/ serbuk sekam padi (RHP) telah dikaji. Kesemua sampel ujian disediakan dengan menggunakan pencampur dalaman Haake Rheomix Polydrive R600/ 610 pada suhu 180°C dan kelajuan rotor 50 rpm. Sampel tersebut kemudian dibentuk menggunakan pengacuanan mampatan pada suhu 180°C. Saiz partikel bagi RHP dan NBRr yang digunakan di dalam kajian ini adalah 150 - 300 μm. Perekatan di antara pengisi dan matriks telah ditingkatkan dengan menggunakan asetik anhidrida (Ac) sebagai agen penserasian dan ɤ-APS sebagai agen pengkupel. Sifat-sifat mekanikal dan terma bagi kesemua komposit yang dirawat telah meningkat. Rawatan Ac telah menambahkan ciri-ciri hidrofobik RHP dan meningkatkan lekatannya dengan matrik tak berpolar PP/NBRr. Peningkatan sifat-sifat seperti tensil, kestabilan terma dan penghabluran komposit yang lebih baik ditunjukkan oleh komposit yang dirawat dengan Ac berbanding pengkupelan ɤ-APS. Teknik penserasian matrik dengan menggunakan Eter Diglycidal Bisphenol A (DGEBA) dan maleik anhidrida tercantum polipropilena (PPMAH) juga telah dikaji. Perekatan di antara pengisi dan matrik telah ditingkatkan oleh DGEBA dan PPMAH. DGEBA didapati lebih berkesan dalam meningkatkan perekatan antara pengisi dan matrix. Radiasi alur elektron turut dikaji bagi menghasilkan sambung silang di dalam komposit. Radiasi alur elektron pada dos 40 kGray dengan kehadiran TMPTA (promoter sambung silang) telah digunakan. Keputusan menunjukkan komposit mempunyai sifat-sifat tensil, kandungan gel, kestabilan terma dan kehabluran komposit yang paling tinggi tetapi penyerapan air yang paling rendah. ____________________________________________________________________________________________________________________ Themoplastic elastomer composite of polypropylene (PP)/ recycled acrylonitrile butadiene rubber (NBRr)/ rice husk powder (RHP) was investigated. All test samples were prepared using Haake Rheomix Polydrive R600/ 610 internal mixer at temperature of 180°C and rotor speed of 50 rpm. The samples were later moulded using compression moulding at temperature of 180°C. The particle sizes of the RHP and NBRr used in this research were 150 - 300 μm. The composites properties were enhanced by treating the RHP using Acetic Anhydride (Ac) and ɤ-APS as a coupling agent. Mechanical and thermal properties of all treated composites were improved. The treatment with Ac increased the hydrophobic characteristic of RHP and improves its adhesion with non-polar PP/NBRr matrixes. Better properties such as tensile, thermal stability and crystallinity of composites showed by Ac treatment compared with ɤ-APS coupling agent. Matrix compatibilization techniques were also investigated by using Diglycidal ether of bisphenol A (DGEBA) and Polypropylene grafted maleic anhydride (PPMAH). The adhesion between filler and matrix was improved for both DGEBA and PPMAH. DGEBA was found to be more effective in improving the adhesion between filer and matrix. Electron beam irradiation was also evaluated to introduce cross-linking in the composites. Electron beam irradiation at 40 kGray in the presence of TMPTA (irradiation crosslink promoter) was used. Results showed that composites have highest tensile properties, gel content, thermal stability and crystallinity but lowest percentage of water absorption.
| Item Type: | Teaching Resource |
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| Uncontrolled Keywords: | full text available at http://irplus.eng.usm.my:8080/ir_plus/institutionalPublicationPublicView.action?institutionalItemId=1963 |
| Subjects: | T Technology T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials |
| Divisions: | Kampus Kejuruteraan (Engineering Campus) > Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral (School of Material & Mineral Resource Engineering) > Thesis |
| Depositing User: | Mrs Norhayati Ismail |
| Date Deposited: | 06 Jun 2018 07:44 |
| Last Modified: | 06 Jun 2018 07:44 |
| URI: | http://eprints.usm.my/id/eprint/40707 |
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