Selecting Plasticizers for Adhesives and Sealants
Plasticizers are organic liquids or solids that are incorporated by melt processing or diffusion into a compatible polymer to reduce interaction between molecules and improve molecular mobility. There are several theories to explain plasticization ; however, the main point in all of these is that plasticizers reduce polymer-to-polymer chain
Plasticizers: Types, Uses, Classification, Selection & Regulation
A primary plasticizer enhances elongation, softness and flexibility of polymer. They are highly compatible with polymers and can be added in large quantities. For example: up to 50% of vinyl gloves are made up of plasticizers, which make the PVC flexible and soft enough to wear.
Selection of Solid-State Plasticizers as Processing Aids
The objective of the study was to select solid-state plasticizers for hot-melt extrusion (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
Release Enhancement by Plasticizer Inclusion for Amorphous
Abstract Purpose: Plasticizers are commonly used in the preparation of amorphous solid dispersions (ASDs) with the main goal of aiding processability; however, to the best of our knowledge, the impact of plasticizers on drug release has not been explored.
Determination of plasticizer residues in tea by solid phase
Human exposure to plasticizers is widespread because these compounds are commonly found in the environment. Nevertheless, studies on human dietary exposure to plasticizers are limited. This research deals with the evaluation of 27 plasticizer residues in tea infusion samples brewed with and without bag. Levels were determined by solid phase extraction–gas chromatography–mass spectrometry
- What is a solid state plasticizer?
- Based on comparable solubility parameters, stearic acid, glyceryl behenate, and polyethylene glycol 8000 were selected as solid-state plasticizers. Binary and ternary physical mixtures were evaluated as a function of plasticizer concentration for thermal and rheological behavior.
- Which solid-state plasticizers are used in a chemistry study?
- Solubility parameters, thermal analysis, and rheological evaluation were used as assessment tools. Based on comparable solubility parameters, stearic acid, glyceryl behenate, and polyethylene glycol 8000 were selected as solid-state plasticizers.
- How to select solid-state plasticizer?
- The selection of solid-state plasticizer should include miscibility of plasticizer in polymer as well as API and its effect on T g and η 0 of the final system. It can be summarized that when components are miscible, different techniques will lead to the consistent plasticization effect prediction.
- Which reagents are used in solid-state plasticizers?
- Stearic acid (SA) (Mallinckrodt) glyceryl behenate (GB) (Gattefossé, Saint-Priest, France), and polyethylene glycol (PEG) 8000 (Dow-Union Carbide) were selected as solid-state plasticizers to be investigated. All other reagents were of analytical grade.
- What makes a good plasticizer?
- In the context of HME, plasticizers are selected for their ability to lower processing temperatures and reduce melt viscosity [ 38 ]. Some additional requirements for a good plasticizer include low volatility, temperature stability, and compatibility [ 39 ].
- What are natural product type plasticizers?
- Vegetable oil derivatives are the most widely used natural product type plasticizers. Products consisting of triglyceride esters of unsaturated fatty acids (e.g., soybean oil, linseed oil) in which the double bonds in the fatty acid residues have typically been epoxidized have been commercial products for decades.
