Selection of Solid-State Plasticizers as Processing Aids
The physical and mechanical properties of plasticizers, in selected binary (polymer:plasticizer) and ternary (active pharmaceutical ingredient:polymer:plasticizer) systems, were evaluated to assess their effectiveness as processing aids for HME process.
Determination of plasticizers efficiency for nylon by
Polyamides are semicrystalline polymers useful in a wide range of applications in the plastics industry. Some applications require higher flexibility and workability of the polyamides, therefore, plasticizers are added to ease compounding and processing procedures and produce the desired product properties. The goal of this study was to estimate plasticizers efficiency in plasticizing Nylon 66
Phthalate-Free High Efficiency Plasticizer Improved
can help to reduce plasticizer use, meet regulatory requirements and improve the environmental profile of a product while maintaining performance. Through Glass Transition Temperature (Tg) depression testing, DOWANOL LoV 485 has shown to be at least 25% more efficient than benzyl butyl phthalate. The graph below represents results
Technical tip Plasticizer formulation - Eastman Chemical Company
Efficiency Table 1 compares several plasticizers and coalescents and denotes their compatibility with solventborne and/or waterborne coatings. It indicates there is little difference in plasticizer efficiency in solvent-based coatings. The efficiencies of these plasticizers were evaluated by adding the plasticizer at five different
Specialty Plasticizers for Rubber/Elastomers | Hallstar
Most of the acrylics require a plasticizer to achieve low temperature performance. Many monomerics are too volatile to be of value because of the post cure requirement. Low temperature performance can be best achieved with polymerics as well as TP-759 and TegMeR 812. APPLICATIONS O-rings Valve stem oil deflectors Lip seals, gaskets
- Are plasticizers effective as processing aids for HME process?
- The physical and mechanical properties of plasticizers, in selected binary (polymer:plasticizer) and ternary (active pharmaceutical ingredient:polymer:plasticizer) systems, were evaluated to assess their effectiveness as processing aids for HME process.
- How do you calculate plasticization efficiency?
- Primarily, plasticization efficiency is a first-order process and can be expressed as A = A 0 e − K [c] plasticizer where A = measured parameter, A 0 = A when plasticizer concentration is 0, K = rate constant, and [c] plasticizer = plasticizer concentration.
- What plasticizers are used in hot-melt extruded systems?
- Although commonly used pharmaceutical plasticizers such as triacetin, 4 citrate esters, 2, 5 and lower molecular weight polyethylene glycols 2, 3, 4 have been investigated in hot-melt extruded systems, almost all of them are liquid.
- What is plasticizer efficiency?
- Plasticizer efficiency is defined as a measure of the concentration of plasticizer required to impart a specified softness to a polymer.
- Can plasticizers be used in extrusion processing?
- The addition of plasticizers as a strategy to facilitate the extrusion processing is well established in the plastics and pharmaceutical industries (62). Plasticizers are typically small molecules that act to increase the free volume between polymer chains, resulting in a depression of the T g and the melt viscosity (63).
- Do plasticizers affect HME process and product performance?
- Although various studies have demonstrated the effect of plasticizers on HME process and product performance, 21, 22, 23, 24, 25 no single study has investigated the systematic approach for selecting a suitable plasticizer.
