Plasticizers storage modulus curve

Figure 5.35. DMA storage modulus curves for as-spun and drawn poly(ethylene-2,6-naphthalene dicarboxylate) (PEN) monofilaments the as-spun fiber, which is unoriented and amorphous, exhibits a modulus decrease due to the glass transition of the polymer then, the modulus increases again due to cold crystallization. [From Saw et al. (1997) reprinted with permission of Society of Plastics Engineers.]...

Figure 12.6 Schematic representation of the effects of plasticizers and crosslinkers on the storage modulus curve. Hollow and full symbols differentiate initial (polymer blend) and final (influence of plasticizer or crosslinker) situations.

Figure 13.13 Reduced storage modulus G and dynamic viscosity rj = G /w as functions of reduced frequency uto) for a cylinder-forming polystyrene-polybutadiene-polystyrene triblock copolymer with block molecular weights of 7000-43,000-7000. The curves are time-temperature-shifted to a reference temperature of 138°C the open symbols were obtained in the low-temperature ordered state the closed symbols were obtained in the high-temperature disordered state. (From Gouinlock and Porter 1977, reprinted with permission from the Society of Plastics Engineers.)...

Figure 1. Dynamic shear storage modulus and loss tangent as a function of temperature for PS-0.02MAA-Na plasticized to varying degrees by diethylbenzene (DEB) curves 1, "5 2, 80 3, 84 4, 88 5, 92 6, 100 wt % polymer(adapted from ref. 25).

Figure 5.41. Increase in storage modulus (which parallels the rise in viscosity) from the onset of reaction for a supported sample (resin coated onto an inert substrate) of an epoxy resin. Curve (a) is the isothermal storage modulus-cure time plot curve (b) shows loss modulus. The storage modulus rises in two steps, the first due to gelation and the second to vitrification, and then levels off at a high value characteristic of the glassy state. The loss modulus peak indicates the time to vitrify. High performance epoxy, cure at 155 °C (from Lee and Goldfarb, 1981a, b with permission of the Society of Plastics Engineers).

Figure 8.1(b) Effect of strain on the storage modulus vs. frequency curves for NA-250 low density polyethylene with 50vol% of spherical stainless steel particles at 160 C. (Reprinted from Ref, 44 with kind permission from Society of Plastics Engineers Inc., Connecticut, USA.)... 

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