PARTICLEBOARD MADE FROM MODIFIED CROSSLINKED CARBOXYMETHYL STARCH FROM OIL PALM TRUNK AS BIO-ADHESIVES
| dc.contributor.author | SELAMAT, MOHD EZWAN | |
| dc.date.accessioned | 2015-07-29T06:56:55Z | |
| dc.date.available | 2015-07-29T06:56:55Z | |
| dc.date.issued | 2014-08 | |
| dc.description.abstract | The compatibility of modified crosslinked carboxymethyl oil palm trunk starch as the new natural based adhesive for wood-based composite was studied through a numbers tests such as proximate analysis, physical and mechanical test. The starch was extracted from oil palm trunks which are more than 25 years old oil palm trees due to the decreased fruits yield and the difficulty for harvesting process. The extracted starch were crosslinked using sodium choloroacetate (C2H2ClNaO2) followed by the addition of phosphoryl chloride (POCl3) to produced highly branched carboxymethyl starch. The particleboards were produced based on two different target densities (0.60 g/cm3 and 0.80 g/cm3) made up by using 4 different types of adhesive namely urea formaldehyde (control sample), native oil palm trunk starch, modified crosslinked carboxymehtyl oil palm trunk starch and mixed adhesives consisting of modified crosslinked carboxymethyl oil palm trunk starch mixed with 2% urea formaldehyde. Based on the physical and mechanical test, the particleboard bonded using modified starch showed improvement in properties compared to the particleboard bonded with native starch based on oil palm trunk. The addition of 2% urea formaldehyde with 13% modified crosslinked carboxymethyl oil palm trunk starch improved the physical properties especially the reduction of thickness swelling (TS) and water absorption (WA). For mechnical properties, it was shown that the addition of 2% urea formaldehyde is good enough to meet the minimum value specified for modulus of rupture (MOR) and modulus of elasticity (MOE) conforming to the Japanese Industrial Standard (JIS A5908) for Type 8 particleboard. For internal bond (IB) strength, all the particleboard bonded xv using 4 different types of adhesives successfully satisfied the JIS requirements for Type 8, Type 13 and Type 18 particleboard. For formaldehyde release test, as expected the particleboard produced with mixed adhesives exhibited much lower formaldehyde release compared to the control sample that using urea formaldehdye. Based on this study, it showed that the modified starch based on oil palm trunk has a potential to be use as an alternative adhesive and later commercialize in the particleboard making and at the same time reduce the dependant on formaldehdye based adhesives for some application. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/835 | |
| dc.subject | PARTICLEBOARD MADE FROM MODIFIED | en_US |
| dc.title | PARTICLEBOARD MADE FROM MODIFIED CROSSLINKED CARBOXYMETHYL STARCH FROM OIL PALM TRUNK AS BIO-ADHESIVES | en_US |
| dc.type | Thesis | en_US |
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