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.
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.
Phthalate Plasticizers Covalently Bound to PVC
The internal plasticization of PVC by displacement of chlorine with phthalate-based thiol additives, that is, the covalent attachment of the plasticizer to the PVC chain, is described for the first time. Using this methodology, a good plasticization efficiency is achieved although flexibility is reduced compared with that of commercial PVCphthalate systems. However, the migration is
PVC Plasticizer Migration - Chaffee Industrial Roofing
This is a result of one major problem with PVC roof systems, which is plasticizer migration. Plasticizer migration occurs as a result of the PVC membrane formulation. Most PVC products, like PVC pipe, PVC trim, and PVC decking, are solid, rigid products. In order to make PVC a flexible membrane sheet, the formulation needs to be altered.
Study of the migration of PVC plasticizers - ScienceDirect
Plasticizer migrated after this time, was determined by thermogravimetric analysis, in a Perkin-Elmer thermobalance, by heating the sample from 25 to 600 °C at 10 °C/min under a 20 ml (STP)/min flow of nitrogen. 3. Results and discussion Thermogravimetric study of different polystyrene samples reveals marked differences in the degradation process.
- Can plasticizers migrate from flexible PVC parts to other media?
- An accelerated method has been set up in order to study the capacity of migration of different commercial plasticizers from flexible PVC parts towards other media kept in contact with it; in this case, polystyrene (PS) has been used as example.
- Do Plasticizers improve the migration resistance of plasticized PVC material?
- This indicates that a moderate increase in the relative molecular weight of the plasticizer can effectively improve the migration resistance of the plasticized PVC material, a finding consistent with the results from the resistance tests. There has been no clear evidence observed regarding the plasticization process of plasticizers in PVC.
- Do plasticizers migrate from MPVC to poly(dimethylsiloxane) via skin?
- There is a potential risk of exposure to PAEs from household PVC articles via skin. In the present study, the migration of plasticizers from modeled and commercial polyvinyl chloride (mPVC and cPVC, respectively) to poly (dimethylsiloxane) via artificial sebum was assessed to mimic the dermal migration of plasticizers.
- 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.
- Does PBA absorption affect plasticizer migration from flexible PVC?
- Integrating the profiles in terms of weight ratios, it is found that DEHP is adsorbed 300 % more than PBA, which justifies that gravimetry is insensitive towards PBA absorption. 4. Conclusions In this study, the plasticizer migration from flexible PVC in contact with rigid PVC sheets was investigated.
- Do plasticizers migrate from PVC to distilled water?
- Nevertheless, plasticizer migration from PVC blends with only one plasticizer, including extraction in distilled water, exudation and volatility, was investigated, showing the highest volatility of PVC/CA (about three times higher than for PVC/DOTP) and comparable extraction in distilled water.
