Migrability of PVC plasticizers - ScienceDirect
Different PVC plasticizers, with different chemical structure, have also been used and are listed in Table 1. PVC pastes were prepared by mixing the PVC resin, the plasticizer and the stabilizer in the following proportions: 100 phr (parts per hundred of resin) of PVC, 70 phr of plasticizer and 2 phr of the thermal stabilizer.
Migrability of PVC plasticizers from medical devices into a
The plasticizers in the PVC matrix can leach out into the infused solutions and may enter into contact with the patients. In order to assess the risk of patient exposure to these plasticizers we evaluated the migration performance of DEHP, DEHT, DINCH, and TOTM using a model adapted to the clinical use of the MDs.
Migrability of pvc plasticizers | Semantic Scholar
Kinetics Study of the Migration of Bio-Based Plasticizers in Flexible PVC C. Mao, D. Chan Materials Science The migration of bio-based plasticizers from flexible PVC was investigated by a solid-contact method using sandwiched PS sheets under pressure. A first-order migration kinetic equation was used to… Expand PDF View 1 excerpt, cites background
Migrability of PVC plasticizers from medical devices into a
The plasticizers in the PVC matrix can leach out into the infused solutions and may enter into contact with the patients. In order to assess the risk of patient exposure to these plasticizers we evaluated the migration performance of DEHP, DEHT, DINCH, and TOTM using a model adapted to the clinical use of the MDs.
PVC Plasticizers and Stabilizers Following Safer Sustainable
VESTINOL 9 DINP is a very cost-effective, general-purpose plasticizer very useful in soft PVC formulations with a broad processing temperature window. ELATUR DPT (DiPentylTerephthalate) plasticizer has very low Volatile Organic Compound (VOC) residue build-up, has a low viscosity, and is fast fusing upon gelation.
- Can PVC plasticizers migrate to a polymer in contact with flexible PVC?
- The ability of different PVC plasticizers to migrate towards a polymer in contact with flexible PVC has been investigated. A procedure based on the monitoring of the plasticizer concentration by infrared spectroscopy has been employed.
- How can we measure plasticizer migration in coextruded PVC pipes?
- Technologically relevant for plasticizer migration studies in coextruded PVC pipes. This study introduces and validates an effective approach for monitoring the plasticizer amount and its concentration profile in polyvinyl chloride (PVC) formulations. The method combines gravimetric measurements with confocal Raman depth profiling analysis.
- 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 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.
- Why is extraction and migration of PVC plasticizers important?
- The study of the extraction and migration of PVC plasticizers is of great importance for several reasons. Extraction can occur in PVC films in contact with food, in bags or pipes in contact with biological fluids, such as blood, or even when a child could chew a PVC toy.
- 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.
