A Strategy for Nonmigrating Highly Plasticized PVC - Nature
Flexible samples with 0.32:1 plasticizer over PVC were selected to ensure a high migration rate of plasticizers. These results indicated that the new DOP-like plasticizer in PVC was...
Plasticiser loss from plastic or rubber products through
Navarro, R. et al. Highly flexible PVC materials without plasticizer migration as obtained by efficient one-pot procedure using trichlorotriazine chemistry. Macromolecules 49 , 2224–2227 (2016).
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.
Plasticizer Migration: What is it and why is it a problem
Plasticizer migration is the unwanted net movement of a plasticizer component out of a compound (like an adhesive or plastic). It can occur through gas volatilisation, liquid extraction, or solid migration. Collectively these are known as plasticizer migration. Plasticizers are often put into materials to make them more flexible or malleable.
Research progress of novel bio-based plasticizers and their
Abstract Plasticized polyvinyl chloride (PVC) has been widely used in the world. Petroleum-based plasticizers especially phthalates have been the most common plasticizers used in PVC. However, the global petroleum resources are becoming scarce gradually, and the hygienic requirements for plasticizers are increasing. Owing to the negative impact of petroleum-based plasticizers on human health
- 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.
- 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 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.
- 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?
- PVC plasticizers can be released from flexible PVC in several ways: through volatilization from the PVC surface to the air, extraction to a liquid in contact, migration to a solid or semi-solid in contact, and exudation under pressure.
- Why is plasticizer migration a problem for PVC?
- Plasticizer migration from a PVC item to its surroundings can lead to problems such as the modification of the PVC's flexibility and contamination of the media in contact with PVC.
