Macosko

C. W. Macosko, RIM, Fundamentals ofEeaction Injection Molding, Hanser, New York, 1989. 

Els and McGill [48] reported the action of maleic anhydride on polypropylene-polyisoprene blends. A graft copolymer was found in situ through the modifier, which later enhanced the overall performance of the blend. Scott and Macosko [49] studied the reactive and nonreactive compatibilization of nylon-ethylene-propylene rubber blends. The nonreactive polyamide-ethylene propylene blends showed poor interfacial adhesion between the phases. The reactive polyamide-ethylene propylene-maleic anhydride modified blends showed excellent adhesion and much smaller dispersed phase domain size. 

C. W. Macosko, Reaction Injection Molding Fundamentals of RIM, Hanser, Munich (1989). 

Mikkelsen KJ, Macosko CW, Fuller GG (1988) Xth Internat Congr Rheol Sidney, vol 2, p 125... 

The heat transfer problem which must be solved in order to calculate the temperature profiles has been posed by Lee and Macosko(lO) as a coupled unsteady state heat conduction problem in the adjoining domains of the reaction mixture and of the nonadiabatic, nonisothermal mold wall. Figure 5 shows the geometry of interest. The following assumptions were made 1) no flow in the reaction mixture (typical molds fill in <2 sec.) ... 

FIGURE 11.17 Microstmcture of polypropylene/styrene-butadiene rubber (PP-SBR) blends, PP shown light. (From Cook, R.F., Koester, K.J., Macosko, C.W., and Ajbani, M., Polym. Eng. Set, 45, 1487, 2005.)... 

Calculating Network Structure Using Miller—Macosko Theory... 

The theories of Miller and Macosko are used to derive expressions for pre-gel and post-gel properties of a crosslinking mixture when two crosslinking reactions occur. The mixture consists of a polymer and a crosslinker, each with reactive functional groups. Both the polymer and crosslinker can be either collections of oligomeric species or random copolymers with arbitrary ratios of M /Mj. The two independent crosslinking reactions are the condensation of a functional group on the polymer with one on the crosslinker, and the self-condensation of functional groups on the crosslinker. 

BAUER Calculating Network Structure with the Miller—Macosko Theory 191... 

Another critical concept is the understanding of how quantities are selected "at random". Three ways are used by Miller and Macosko (4) chains can be selected at random yielding number averages (also... 

The Miller and Macosko derivation begins by calculating the expectation value of the weight looking out from a given A functional group,. This is just the expectation value of... 

Equations 5-8 are identical to those derived by Miller and Macosko (4) except for the addition of the self-condensation terra in equation 7. Equations 5-8 can be solved for E(Wy ° ) and E(Wg° ). The weight average molecular weight is given by ... 

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