Effect of crosslinker type on water absorbency of superabsorbent polymer based on waste polystyrene foam-g-acrylic acid
2010
Nur Raihan Mohamed | Nadras Othman | Zulkifli Ahmad
A superabsorbent polymer (SAP) based on neutralized acrylic acid (AA) and waste polystyrene foam (WPSF) was synthesized through emulsion polymerization technique by using 3 different type of crosslinkers such as N,N'-Metbylenebisacylamide (NMBA), N,N'-Ethylenebisacrylamide (NEBA) and N,N'-(1,2-dihydroxyl) Ethylenebisacrylamide (DEBA) while potassium persulfate act as an initiator and Span 80 used as dispersant. The effect of crosslinker type on the water absorbency were studied in order to find the most suitable crosslinker that can enhanced the absorbency. The chosen crosslinker is different in chain length and the hydroxyl side group. The result shows that NMBA absorbed the highest water as compared to NEBA and DEBA,hence NMBA is the most hydrophilic than the other two crosslinker. NMBA comprise 9 center hydrocarbon chain while NEBA and DEBA got 10 center hydrocarbon chain respectively. The hydroxyl group attach in DEBA structure can form a hydrogen bonding, hence can absorb more water than NEBA. Because of that, NEBA can be said as less hydrophilicity among the other two crosslinker. So, the hierarchy of the effect of crosslinker type on synthesized of superabsorbent polymer (SAP) based on neutralized acrylic acid (AA) and waste polystyrene foam (WPSF) on waterabsorbency is concluded as follows; NMBA>DEBA>NEBA.
显示更多 [+] 显示较少 [-]