Compatibility of Various Plasticizers with Airflex 400
Compatibility of Various Plasticizers With Airflex 400 Emulsion Summary A number of plasticizers were evaluated at 20 PPHR and 50 PPHR per 100 PPHR Airflex 400 emulsion. Plasticizer compatibility was rated qualitatively by judging the clarity, gloss and surface appearance of a dried sample of emulsion.
Compatibility of Various Plasticizers with Airflex 400 Emulsion
Compatibility of Various Plasticizers With Airflex 400 Emulsion The effects of 21 plasticizers on emulsion viscosity and adhesive peel strength to a limited number of substrates of Airflex 426 emulsions were examined in a previous study. Plasticizers were evaluated at the 10 PPHR level. Results showed few significant
Industrial Coatings - Thermo Fisher Scientific
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Energetics and Compatibility of Plasticizers in Composite
The concept of a 'like dissolving like' could be applied to explain compatibility of various plasticizers. From thermodynamic point of view, the cohesive energy densities must be alike for a plasticizer to be compatible with a system2. The lubrication theory as well as the gel theory of solvation of polymer chain with plasticizer holds
Selecting Plasticizers for Adhesives and Sealants
Different plasticizers affect different physical and chemical properties of materials. Therefore, a formulator selects a particular plasticizer to change properties in a certain direction to meet requirements. There are over 38 general chemical families of plasticizers that are used for polymer modification.
- What is Wacker Airflex® 400?
- Airflex® 400 by Wacker is developed as a high-performance base for adhesives. (polyvinyl alcohol protected emulsion). The dried adhesive film has toughness and flexibility. Shows good resistance to creep at elevated temperatures. Airflex® 400 provides rapid setting speed, strong wet tack, good machinability.
- Which plasticizer is more compatible with PEG400 vs MCC?
- Calculation of solubility parameter δ using molecular simulations showed that PVP and HPMC are more compatible with PEG400 as a plasticizer than MCC. DPD simulations showed that PEG plasticizer mix well with PVP indicating good compatibility between them.
- Why is polymer-plasticizer incompatibility important?
- Compatibility between a polymer and a plasticizer produces stable and homogeneous coating film. It is often characterized by a high miscibility between the plasticizer and the polymer blend. Polymer-plasticizer incompatibility influences not only the mechanical properties but also drug release , .
- How does polymer-plasticizer incompatibility affect drug release?
- Polymer-plasticizer incompatibility influences not only the mechanical properties but also drug release , . Permanence of a plasticizer means its tendency to remain in the plasticized material; i.e. long term compatibility. It depends on the size of the molecule and on its rate of diffusion.
- How to assess polymer-plasticizer compatibility?
- In this study, different methods for the assessment of polymer-plasticizers compatibility were proposed and compared. We have used Dmol3 and COSMO model to generate σ-profiles of the compounds. We have seen that σ-profiles give valuable information regarding polarities, hb-donors and hb-acceptors, wich allow to guess the solubility of compounds.
- Should water-insoluble plasticizer be added to aqueous polymer dispersion before dilution?
- During solid dosage forms coating preparation, for optimal mixing between the plasticizer and the polymeric dispersion, Bodmeier and Paeratakul recommended the introduction of water-insoluble plasticizer to the aqueous polymer dispersion before dilution of the latter.
