Prediction of compatibility in polymer-plasticizer systems
The solubility of the plasticizer has been calculated from the curves and compared with experimental results. Although the absolute values of the solubilities were underestimated, the relative solubilities amongst groups of compounds were predicted well, so that the method may be useful in the prediction of compatibility in these systems.
Prediction of compatibility in polymer-plasticizer systems
A method for the reliable prediction of the phase equilibria of polymer-plasticizer systems would be very useful, but those based on existing models such as the Flory-Huggins or solubility parameter treatments are of limited use in many cases3.
Investigation of the Compatibility of a Novel Copolymer Based
The compatibility between polymer and plasticizer is an important criterion for obtaining the best thermomechanical properties. In this research, the compatibility of the novel PPG/PGN based copolymer with three energetic plasticizers was studied.
Migration of the plasticizer in the compatibilized PP/PVB
However, plasticizers can migrate from polymer due to weak interactions between polymeric chains and plasticizer molecules. It causes changes in performance and properties of the system plasticizer migration relies on several factors including chemical structure and concentration of the plasticizer, processing conditions, etc. [25,26,27,28,29,30].
6. THEORIES OF COMPATIBILITY - ResearchGate
But it is important to predict the compatibility with respect to other external factors such as pressure, using any thermodynamic criterion. Mixing of polymer and plasticizer (as a solvent)...
- Can molecular simulations predict plasticization of polymers?
- A molecular simulations methodology was developed to be able to predict plasticization of polymers (tested here on a complex system; thermoplastic starch). The methodology, and the simulated systems, were evaluated against experimental density, glass-transition data and mechanical properties.
- Can MD simulation predict the solubility parameters of polymers and plasticizers?
- The amorphous models of SEBS with TA, DEP, DOS, and WO were constructed, and the solubility parameters of each substance were calculated by MD method. The relative error between the simulated value and the literature value was less than 3%, indicating that MD simulation can be used to predict the solubility parameters of polymers and plasticizers.
- What is the Order of compatibility between plasticizer and SEBS?
- Therefore, the order of compatibility between plasticizer and SEBS obtained by the intermolecular radial distribution function is SEBS/WO > SEBS/DOS > SEBS/DEP > SEBS/TA, which is consistent with the prediction results of solubility parameters.
- Do biopolymers need a plasticizer?
- There is a wealth of studies in literature showing that a content above 20 wt% plasticizer is needed for effective plasticization of biopolymers, and we refer here, as an example, to a study on similar starch-glycerol systems as ours, where a similar transition was observed experimentally [ 76 ].
- Does adding a plasticizer increase the free volume of a polymer?
- In the free volume theory [ , , ], it is considered that the addition of a plasticizer contributes with more free volume to the polymer. It results in higher free volume of the polymer/plasticizer system and increases the chain mobility.
- Does plasticization occur experimentally?
- The methodology, and the simulated systems, were evaluated against experimental density, glass-transition data and mechanical properties. In the simulations, it was possible to observe the transition region where plasticization occurs experimentally (20–30 wt.% plasticizer).
