Abstract
Abstract In this work, the effects of the morphological variation and the polymer/polymer interface on the tensile modulus of binary polymer blends were evaluated using a combined modeling method. The characteristics of the polymer/polymer interface region were evaluated using a neural network system and the results were used to improve the analytical model. The model accuracy was investigated by comparing its predictions with the tensile test results of some prepared iPP/PA blend samples and also some other data from literature which revealed an acceptable accuracy (error < 5%).
Highlights
The manipulation of the mechanical properties of polymer materials using different processes such as the production of polymer blends/nanocomposites and blend-based nanocomposites has been always considered as a very efficient method for obtaining new structures with required characteristics [1,2,3,4,5,6,7,8,9]
The presence of tow consistency parameters (b and T, Eqs. (20) and (23), respectively) in the modeling procedure of framed model (FM) model can be considered as one its significant advantages which drastically increased its compatibility with the actual blend system
As it is clear the, neglecting the effects of the interface region significantly increases the error to at least 5% on top of the prediction error of the FM model which can be attribute to the assumption of the presence of a very strong and perfect polymer/polymer interface
Summary
The manipulation of the mechanical properties of polymer materials using different processes such as the production of polymer blends/nanocomposites and blend-based nanocomposites has been always considered as a very efficient method for obtaining new structures with required characteristics [1,2,3,4,5,6,7,8,9]. As an effort for solving this problem, we proposed a method by which it was possible to combine the results of COS and Maxwell-Eucken models rather than their geometrical structure in order to predict the tensile modulus of binary polymer blends [25]. This was done using a consistency parameter defined based on the fundamentals of the percolation theory [26, 27]. The performance of FM model was compared with some similar models [COS, 3 perpendicular plates (3PP), DIA and symmetrical approximation system (SAS) models] in order to prove its better performance in predicting the tensile modulus of binary polymer blends [21, 24, 25]
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