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...
Plasticizer migration from PVC cable insulation – The
Migration of the plasticizer from PVC-P to a surrounding medium leads to an increase in the Young's modulus and a decrease in the strain at break [11]. Migration includes two separate processes; diffusion of the plasticizer within the polymeric material and plasticizer transport from the polymeric material boundary to the surrounding medium.
Plasticizer Migration - an overview | ScienceDirect Topics
The plasticizer migration rate from PVC to polyethylene decreased when plasticizer polarity increased. For example, DOS is better absorbed by polyethylene than DOP or TCP. Migration rate of plasticizer increases when interaction between polymer and plasticizer decreases.
Methods for determination of plasticizer migration
Plasticizer migration is responsible for premature coating failure in polyvinyl chloride (PVC) synthetic materials that continue to benefit our daily life as a reliable and cost-efficient simulant of genuine leather. In this context, the establishment of standard assays that measure the migration rate of plasticizers under varying scenarios plays a pivotal role in comparing durability of those
Migration of plasticizers from poly(vinyl chloride) and
The migration of DEHP in PVC grain exceeded the maximum regulated level of 5000 μg/kg, whereas the levels were much lower in films. In new PVC bags, DEHP was the only compound detected at 4.31 ± 0.5 μg/L in NaCl 0.9% and 4.29 ± 0.25 μg/L in glucose 5% serums, whereas the levels increased 10 times in three-year shelf-life bags.
- 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.
- Why is plasticizer migration a problem?
- The plasticizer migration from the plastic item to its surroundings may involve the appearance of problems, namely the modification of flexibility of the PVC and the contamination of the media in contact with PVC.
- 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].
- Do flexible PVC films migrate to RPVC films?
- As described in the experimental section, migration tests were conducted following the UNI EN ISO 177 standard. Flexible PVC formulations were kept in contact with rPVC films, and the plasticizer migration was evaluated by monitoring the weight increase of the rPVC sheet over time.
- How can PVC plasticizers be released from flexible PVC?
- Nevertheless, PVC plasticizers can be released from flexible PVC in different ways : (1) Volatilization from the PVC surface to the air. (2) Extraction from PVC to a liquid in contact with it. (3) Migration from PVC to a solid or semi-solid in contact with it. (4) Exudation under pressure.
- 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.
