Citation
Wan Aizan W. A. R., . and Nurnadia A., . and Roshafima R. A., . (2010) Effect of crosslink chemicals on the mechanical properties of injection molded rice straw/HDPE biocomposite. [Proceedings Paper]
Abstract
A formulation was designed to produce silane crosslinkable rice straw/HDPE RSPE compound suitable for injection molding process. The formulations consist of HDPE as the base polymer rice straw as the filler processing aids and a mixture of crosslink chemicals. Crosslink chemicals consist of vinyltrimethoxysilane VTMO as crosslinking agent dicumyl peroxide DCP as the initiator dibutyltin dilaurate DBTL as the condensation catalyst. Lignocellulosic material rice straw was oven dried at 70C for 24 hours grinded and sieved. A counter rotating twin shaft high speed mixer was utilized to mix the rice straw HDPE and the processing aids. Blends were then compounded on co-rotating and intermeshing twin screw extruder. Prior to injection compounded biocomposite were injection molded into test specimens followed by curing in an oven at 90C. FTIR was used to determine the chemical groups involved in the crosslinking reaction that occur in samples. Degree of crosslinking of the silane crosslinked sample was measured by determining their gel content after crosslinking reactions. The degree of crosslinking in RSPE increases with an increased in VTMO and DCP concentration. The results from FTIR showed the presence of Si-O-Si bond indicative of crosslinking occurring during curing process.
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Abstract
A formulation was designed to produce silane crosslinkable rice straw/HDPE RSPE compound suitable for injection molding process. The formulations consist of HDPE as the base polymer rice straw as the filler processing aids and a mixture of crosslink chemicals. Crosslink chemicals consist of vinyltrimethoxysilane VTMO as crosslinking agent dicumyl peroxide DCP as the initiator dibutyltin dilaurate DBTL as the condensation catalyst. Lignocellulosic material rice straw was oven dried at 70C for 24 hours grinded and sieved. A counter rotating twin shaft high speed mixer was utilized to mix the rice straw HDPE and the processing aids. Blends were then compounded on co-rotating and intermeshing twin screw extruder. Prior to injection compounded biocomposite were injection molded into test specimens followed by curing in an oven at 90C. FTIR was used to determine the chemical groups involved in the crosslinking reaction that occur in samples. Degree of crosslinking of the silane crosslinked sample was measured by determining their gel content after crosslinking reactions. The degree of crosslinking in RSPE increases with an increased in VTMO and DCP concentration. The results from FTIR showed the presence of Si-O-Si bond indicative of crosslinking occurring during curing process.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. TP248.14 I61 2008 Call Number. |
| AGROVOC Term: | Composite board |
| AGROVOC Term: | Moulding |
| AGROVOC Term: | Injection |
| AGROVOC Term: | Formulations |
| AGROVOC Term: | Performance testing |
| AGROVOC Term: | Rice straw |
| AGROVOC Term: | Plant fibres |
| AGROVOC Term: | Tensile strength |
| AGROVOC Term: | Strength |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:15 |
| URI: | http://webagris.upm.edu.my/id/eprint/13187 |
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