Contents - Akademi Sains Malaysia

2.0100.00 20 40 60 80 100 120 140 160 180 200Temperature (ºC)2.0100.00 20 40 60 80 100 120 140 160 180 200Temperature (ºC)0.00 20 40TStorage modulus (Pa)1.610 101.410 101.210 101.010 108.010 96.010 94.010 92.010 9CB10TSSAlbipoxTimbersetTan delta8.010 –16.010 –14.010 –12.010 –10.0CB10TSSAlbipoxTimberset60 80 100 120 140 0.0160 180 2000 20 40 60 80 100 0 120 140 1600 20 40 60 80 100 120 140 160 180 2000 50 100Temperature (ºC)150Temperature (ºC)Temperature (ºC)Temperature (ºC)Loss modulus (Pa)510 9410 9310 9210 9110 9CB10TSSAlbipoxTimbersetCB10TSSAlbipoxTimbersetTan delta1.41.21.00.80.60.40.20.0–20 0 20 40(a)(b)CB10TSSAlbipoxTimberset1.41.21.0CB10TSSAlbipoxTimbersetTan delta0.80.60.40.250 100 150Temperature (ºC)0.0–20 0 20 40 60 80 100 120140160 180 200Temperature (ºC)(c)Figure 14. Graph of: (a) Storage modulus versus temperature; (b) Loss modulus versus temperature and(c) Tan d versus temperature for all adhesives after soaked in water.which causes an increase in glass transition temperature(Ward & Hardley 1993).Morphology Characterization There are distinct micro-structural differences beforeand after aging. The rougher cleavage pattern for as-crack propagation and less crack branching as a result ofwith no yielding of the adhesive and the development of plasticization had taken place.The fracture surfaces of Albipox before and after agingare shown in Figure18. In the as-received Albipox inFigure 18a, cleaves in a petal-like form and the presenceof micro-voids indicates the cavitation of rubbery particlesthat enhanced resistance to shear yielding and thereforeincrease the tensile strength of the Albipox (Ahmad et al. more packed and denser due to cross-linking. The petal52