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Mathematical Modelling and Computer Simulation of Linear Polymer Degradation: Simple Scissions

“…Controlled hydrolysis at susceptible linkages of a number of complex biomolecules, such as proteins, nucleic acids, polysaccharides, are ideal examples, and corresponding SEC results (where available) were shown to deviate from unimodal to bimodal trend. [34,[69][70][71] Inclusion of hydrolysable linkages in polyesters, polyamides, polyurethanes, poly(dialkyl siloxanes) and polycarbonates provides weaker links useful for industrial purposes. Figure 7a-b (case 5a-b) shows the gradual transformation of an original unimodal distribution to a bimodal one, which regains Gaussian form at LMW domain.…”

“…[32,33,39] The kinetic potential of cleavage at a particular bond site along the chain backbone can be elucidated from the determination of the product sizes during or at the end of decay. [57,69,71,83] …”

Synthesis of multifunctional multiferroic materials from metalorganics

“…A large amount of non-volatile residue (40 %) was also observed and was attributed to the formation of hydrolyzed product that was reportedly difficult to avoid in case of the small sample size that was used in the TG analysis. The TG analysis of Fe(Cp) 2 carried out in the temperature range 25-800 • C shows that it undergoes clean single step sublimation process in the range 50-200 • C resulting in almost 0% residue [68]. The thermal decomposition behavior of (C 4 H 9 C 5 H 4 )Fe(Cp) is very similar to that of ferrocene.…”

Synthesis and characterization of ferrocenyl-functionalized polyester dendrimers and catalytic performance for thermal decomposition of ammonium perchlorate

“…To better understand the catalytic performances for thermal degradation of AP, the mechanism of thermal decomposition may be presented in two ways: (i) electron transfer process in AP decomposition, which can be catalyzed by an additive, and (ii) the rupture of the chemical bond in ClO 4 of AP [27]. As PEDr-Fcs can maintain the special redox properties by electron transfer of ferrocene/ferrocenium in ferrocene groups from the results of electrochemical measurement, it is possible that the Fe 2þ in ferrocene is oxidized into Fe 3þ by AP and then reduced into Fe 2þ by NH 3 produced by the degradation of AP at high temperature [31], and the charge balance of AP is destroyed, which promotes the degradation rate of AP.…”

“…The synthesis procedure, the characterization of a series of PEDr-Fcs, the electrochemical behaviors of PEDr-Fcs and the catalytic performances of PEDr-Fcs for thermal decomposition of AP were also reported. Kissinger method [26,27] was employed to determine the kinetic parameters and activation energy. An attempt was also made to introduce a novel burn-rate catalyst to overcome the immigration and evaporation problems in actual applications of composite solid propellants.…”