Plasticizer Migration - an overview | ScienceDirect Topics
Disadvantages. plasticizer migration to optical fiber coating may result in decreased coating adhesion and possible delamination5. leaching of plasticizer may cause degradation of properties of encapsulated fiber in telecommunication cable 14. when diisooctyl phthalate was used in telecommunication cable strip force was reduced by 90% after 6
Methods for determination of plasticizer migration from polyvinyl
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.
Long- and short-term stability of plasticized poly(lactic acid
The glass transition temperature, Tg, is a good measure of material plasticization, and it may serve as an indicator of plasticization efficiency [ 39 ]. From this respect, plasticizing efficiency of PEG-400 was found higher than that of PEG-POSS especially at higher concentrations.
Know your Plasticizers: A New Study on Plasticizer Migration
However, in addition to toxicity issues, plasticizers can migrate from PVC into adjacent non-PVC thermoplastics, causing stability problems. To address this phenomenon, Teknor Apex (Pawtucket, RI) has published a study focusing on plasticizer migration, which can affect a range of medical device components, including connectors.
Bio-Based Plasticizers for Polyvinylchloride (PVC) | SpringerLink
The degree of plasticizer migration depends on the compatibility of the plasticizers with PVC, the polarity and structure of the plasticizer, temperature, and the surrounding media, and other conditions. A good miscibility was found in the case of isosorbide esters with different alkyl chain length derived from glucose [ 38 ].
- Why do plasticizers have a high migration resistance?
- A great number of ether and ester groups in a plasticizer molecule provide donor-acceptor interactions with PVC, resulting in an excellent migration resistance. As expected, the migration resistance was significantly higher than in films plasticized by DEHP because of the higher molecular weight of alkyl-HPGs .
- How is plasticizer migration determined?
- A new spectrophotometric method for the determination of plasticizer migration. Chemical structure is the prominent determinant for the migration of plasticizers. Plasticized polyvinyl chloride (PVC) is one of the most commonly used material in the manufacture of artificial leather because of its flexibility, high durability and low cost.
- How do we detect plasticizer migration from PVC synthetic materials?
- To this end, this review is compiled as a general review of the methods now available for detecting plasticizer migration from PVC synthetic materials via three different mechanisms (i.e., volatilization, exudation, and extraction), with an emphasis on the instrumentation, methodology, advantages, and limitations of each method.
- Do polymeric plasticizers migrate?
- The related researches on polymeric plasticizer and macromolecule plasticizers mainly focus on molecular structure design and migration in different solvents [, , ]. It is effective to prevent plasticizers migration via introducing branched chains and polar groups in their chemical structure [78, 79].
- What are the optimal conditions for a monomeric plasticizer?
- Therefore, the optimal conditions for a monomeric plasticizer with superior plasticizing performance and excellent migration resistance include: (i) straight-chain molecular structure, (ii) molecular weight between 400 and 1200, (iii) balanced distribution of polar groups throughout the molecular chain.
- Do plasticizers migrate from PVC products?
- Due to the tendency of plasticizers like di-2-ethylhexyl phthalate (DOP) and bis (2-ethylhexyl)adipate (DOA) to migrate from PVC products, which pose serious health risks, and have therefore been increasingly restricted in many countries. Enhancing the migration resistance of plasticizers in PVC remains a critical challenge.
