Polymethyl methacrylate rheological properties

Onogi,S., Masuda,T., Ibaragi,T. Rheological properties of polymethyl methacrylate and polyvinyl acetate in the molten state. Kolloid-Z. Z. Polymere 222, 110-124... 

On the other hand, in the treatments involving no cell wall modifications, the modification of mechanical properties is due only to the nonzero value of Vp and Ep. For the simulation, rheological properties of polymethyl methacrylate (Ep = 4.5 GPa, tan 8p = l/(0Tp = 0.065 at a)/2 tt = 250 Hz [13]) were used. Line (a) in Fig. 6 shows the effect of increasing values. The closed circle on line (a) corresponds to the average experimental Vp value (= 0.5 for a WPG = 126 % and = 1.2). This theoretical prediction shows good agreement with the experimental shift shown on the same graph. 

This technique has found the following applications in addition to those discussed in Sections 10.1 (resin cure studies on phenol urethane compositions) [65], 12.2 (photopolymer studies [66-68]), and 13.3 (phase transitions in PE) [66], Chapter 15 (viscoelastic and rheological properties), and Section 16.4 (heat deflection temperatures) epoxy resin-amine system [67], cured acrylate-terminated unsaturated copolymers [68], PE and PP foam [69], ethylene-propylene-diene terpolymers [70], natural rubbers [71, 72], polyester-based clear coat resins [73], polyvinyl esters and unsaturated polyester resins [74], polyimide-clay nanocomposites [75], polyether sulfone-styrene-acrylonitrile, PS-polymethyl methacrylate (PMMA) blends and PS-polytetrafluoroethylene PMMA copolymers [76], cyanate ester resin-carbon fibre composites [77], polycyanate epoxy resins [78], and styrenic copolymers [79]. 

Zom, R., McKenna, G. B., WUlner, L., Richter, D. Rheological investigation of polybutadienes having different microstructures over a large temperature range. MacromoL (1995) 28, pp. 8552-8562 Stern, D. M., Berge, J. W., Kurath, S. F. Sakoonkim, C., Ferry, J. D. Dynamic mechanical properties of concentrated solutions of polymethyl methacrylate in diethyl phthalate./ CoU. Sci., (1962) 17, pp. 409 17... 

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