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Plasticizers are used in floor coverings to impart flexibility. These plasticizers migrate out of the floor coverings into the surrounding materials. When absorbed by an adhesive, this can cause it to weaken and reduce bond strength, potentially leading to bond failure.
Plasticiser loss from plastic or rubber products through
The migration of plasticiser from polymers to a gas phase is a two-step process that includes diffusion from the polymer bulk to the surface followed by evaporation from the surface to the...
Methods for determination of plasticizer migration
2 Test methods for plasticizer migration In general, plasticizer migration from PVC synthetic materials can proceed via three different mechanisms, namely volatilization, exudation or extraction, depending on the environment where the PVC coatings are located.
Plasticizer Migration: What is it and why is it a problem
Plasticizer migration is the unwanted net movement of a plasticizer component out of a compound (like an adhesive or plastic). It can occur through gas volatilisation, liquid extraction, or solid migration. Collectively these are known as plasticizer migration. Plasticizers are often put into materials to make them more flexible or malleable.
Title: A Review on Plasticizers and Eco-Friendly
Plasticizer migration is a major concern for plasticized polymers because it leads to unwanted changes in mechanical properties and, in many cases, contamination of the environment.
- Can plasticizer migration cause flooring failures?
- Photo: Gary Sheidker. Plasticizer migration is a common cause of flooring failures. Plasticizers can come from the flooring, sound control underlayment, maintenance products and even some concrete substrates. These plasticizers can attack the polymers in some adhesives, causing them to degrade over time.
- What causes plasticizer migration?
- Plasticizer migration is a common cause of flooring failures. Plasticizers can come from the flooring, sound control underlayment, maintenance products and even some concrete substrates. These plasticizers can attack the polymers in some adhesives, causing them to degrade over time. Most resilient flooring products contain plasticizers.
- What happens if a plasticizer migrates?
- Serious migration may result in substantial loss of plasticizer with resultant stiffening of the PVC. An example of plasticizer migration is softening of nitrocellulose or acrylic lacquer following prolonged contact with plasticized PVC.
- Do plasticizers migrate from plasticized PVC to other polymers?
- Plasticizers may migrate from plasticized PVC by contact to other polymeric substances if the resistance at the interface is low and if the plasticizer is compatible with the second polymer. Mobility, ease of diffusion, efficiency of the plasticizer, and temperature help determine the magnitude of the effects.
- Does a high Tc content affect the migration of plasticizer?
- The activation energy is obviously reduced with the increasing TC content as demonstrated by Zhang and Sun , which further confirms that a high plasticizer content makes migration much easier than low content. Migration of plasticizer is also affected by the molecular size of the plasticizer.
- How does polyethylene crystallinity affect the migration rate of plasticizer?
- Migration rate of plasticizer increases when interaction between polymer and plasticizer decreases. Also increase in the polyethylene crystallinity degree decreases the migration of plasticizer from external source because sorption and diffusion processes in polymers mainly occur in the amorphous phase.
