Webco being the Flory point, and p R the fraction of cyclic bonds to all possible bonds and can be equated with D ring [3]. In this report, the author generalizes, within the framework of the above three principles and one assumption, the preceding theory to include mixing systems of multifunctionalities. 2. Theoretical 2-1) R-A f Model Gel Point WebJun 11, 2024 · Flory used the principle of equal reactivity of all functional groups of a given chemical type, irrespective of the size of the molecule to which they are attached; that is, …
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WebIt further shows that the Flory-Stockmayer theory predicts MWD well for systems below the gel point but starts to fail for systems around or above the gel point. However, for all the systems, the MC method can be used to reliably predict MWD no matter if they are below or above the gel point. Even for a macroscopic system, a converging ... WebStatistical network models were first developed by Flory (Flory and Rehner, 1943, Flory, 1953) and Stockmayer (1943, 1944), who developed a gelation theory (sometimes referred to as mean-field theory of network formation) that is used to determine the gel- point conversions in systems with relatively low crosslink densities, by the use of ... greek peak mountain resort cam
Step-Growth Polymerization, the Carothers Equation, and …
WebBelow the gel point, both Flory-Stockmayer theory and MC simulations can be applied to a system containing only a few hundred to a few thousand monomers but having the same molar ratios of monomers as a macroscopic system to accurately predict MWD. As discussed earlier, the Flory-Stockmayer theory starts to fail when a system approaches … WebIf adipic or isophthalic acid is used as the dibasic acid, the gel point equation deduced by Flory's original method, which takes no account of reactivity differences, may be used. In … WebFlory–Stockmayer theory is a theory governing the cross-linking and gelation of step-growth polymers. [1] The Flory-Stockmayer theory represents an advancement from the Carothers equation, allowing for the identification of the gel point for polymer synthesis not at stoichiometric balance. [1] flower colors for grey dress