Micromechanically based formulation of the cooperative model for the yield behavior of semi-crystalline polymers

Yield behaviour of renewable biocomposites of dimer fatty acid-based polyamides with cellulose fibres

“…Following some recent works [19,20], an averaging approach (known as the Takayanagi model) is used to estimate the effective activation volume and effective activation energy.…”

“…6 and Table 2, respectively. Additional details are given in previous publications [19,20]. The model parameters for DAPA and DAPAC are reported in Table 3.…”

Elastic and yield behaviors of recycled polypropylene-based composites: Experimental and modeling study

“…For modeling the yield behavior with the stain rate and temperature effects, Richeton et al [19] have also proposed a new formulation of the cooperative model for amorphous polymers. Gueguen et al [20] extended this cooperative model to predict the yield stress of semi-crystalline polymers by considering the composition of semi-crystalline polymer as two phases (amorphous and crystalline phases). Recently, Matadi et al [21] incorporated a three-phase approach into Gueguen model to estimate the effective yield stress of PP-based nanocomposites under a wide range of strain rates and temperatures.…”

Dynamic mechanical characterization and modelling of polypropylene based organoclay nanocomposite

“…The yield behaviour of neat PP is then described by Gueguen model [2]. For identification the parameters, the experimental data have to be superposed horizontally and vertically in an Eyring plot at a chosen reference temperature to build a mater curve.…”

“…Gueguen et al [2] developed an extended formulation based on Richeton model [3] to describe the yield behaviour of semi crystalline polymers. In this formulation, the semi crystalline polymer is composed by amorphous phase and crystalline phase:…”