Plasticizer migration from cross-linked flexible PVC: Effects on
Chemical modification of PVC structure is one of the most effective tools for reduction of plasticizer diffusion. In this work, a flexible dry blend based on cross-linked PVC was obtained...
Plasticizer migration from cross‐linked flexible PVC: Effects on
Chemical modification of PVC structure is one of the most effective tools for reduction of plasticizer diffusion. In this work, a flexible dry blend based on cross-linked PVC was obtained using a difunctional amine, namely isophoron diamine (IPDA) as the cross-linking agent.
Plasticizer migration from crosslinked flexible PVC: Effects on
Chemical modi- cation of PVC structure is one of the most effective tools for reduction of plasticizer diffusion. In this work, a exible dry blend based on cross-linked PVC was obtained...
Plasticizer migration from cross‐linked flexible PVC. 1. Effects on
Tribological properties of soft uncross‐linked, cross‐linked and rigid PVC were determined. Soft formulations were held in contact for 32 days with rigid PVC sheets. Plasticizer migration towards the interface causes an increase of dynamic friction compared to that of the reference rigid PVC.
Prevention of phataltes migration from flexible PVC products
Cross-linked flexible PVC samples were obtained using a difunctional amine, namely isophoron diamine (IPDA), as cross-linking agent while two different CPE resins were employed for the...
- What is the migration of plasticizer?
- Migration of the plasticizer ues by a whole order of magnitude. The migration of at the interface . values. Since only DOP after a long-term aging. cross-linking agent for PVC dry blends. The increase of rable cross-linking densities. ing the mechanical properties of flexible PVC.
- How to reduce plasticizer diffusion?
- Chemical modification of PVC structure is one of the most effective tools for reduction of plasticizer diffusion. In this work, a flexible dry blend based on cross-linked PVC was obtained using a difunctional amine, namely isophoron diamine (IPDA) as the cross-linking agent.
- Does plasticizer migration affect cross-linker loading?
- caused by the plasticizer migration. Nevertheless, the turned out to be independent of the cross-linker loading. B2, and B3. This behavior was attributed to the compara- samples. TABLE 2. Weight percentage of gel and cross-linking density values for flexible PVC samples. FIG. 2. Migration tests. Weight change of rigid PVC sheets after being
- 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 does crosslinked PVC affect plasticizer uptake?
- Crosslinked PVC exhibits a more complex behaviour: an induction period is observed in this case. followed by a sudden increase of the plasticizer uptake, likely related to the gradual relaxation of the gelled regions. When the plasticizer is of polymeric nature, the migration process slows-down considerably and the total uptake lowers.
- Does plasticizer migration affect dynamic friction compared to rigid PVC?
- Plasticizer migration towards the interface caused an increase of dynamic friction compared to that of the reference rigid PVC.Vickers microhardness hVickers values of rigid PVC sheets decreased due to plasticizer surface absorption. POLYM. ENG.
