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
A potentially general approach to aliphatic ester-derived PVC
The safety of flexible polyvinyl chloride (PVC) materials is now being questioned, partially due to allegations that di-(2-ethylhexyl) phthalate (DEHP), the dominant PVC plasticizer, is an endocrine disruptor and a probable carcinogen. As sustainable alternatives, aliphatic ester-derived plasticizers feature
Analysis of PVC plasticizers in medical devices and infused
To assess our method’s efficiency on the evaluation of plasticizer migration from PVC-MDs in contact with a simulant solution, we made a preliminary study using a co-extruded PVC (plasticized by TOTM)/polyethylene extension line (length: 13.5 cm, diameter: 2 mm, inner surface: 10.6 cm 2). Before performing migration tests, the amount of
Methods for determination of plasticizer migration
When a plasticized PVC coating is stressed in compression by bending it through 180°, one way to relieve the stress is by migration of the plasticizer from the compressed area to the area in tension.
#14 Determination of Plasticizer in PVC by IR or FTIR and a
Determination of Plasticizer in PVC by IR or FTIR and a Precipitation Method Purpose. To isolate, identify, and quantify the plasticizer in polyvinyl chloride (PVC). Time Required. This laboratory investigation should take 4–6 hours. Group Size. It is recommended that students work in pairs on this lab. Materials. Per class
- Why is plasticizer a problem in soft PVC products?
- Theprecipitation and migration of plasticizer is one of the important problems in the application of soft PVC products. If it can not be solved well, it will not only affect the performance and effect of soft PVC products, but also bring some harm to human living environment and human health.
- How to reduce migration of plasticizers out of polyvinyl chloride (PVC)?
- In order to reduce migration of plasticizers out of polyvinyl chloride (PVC), several techniques were attempted. First, binary blends of plasticizers were
- What factors affect the precipitation and migration of plasticizers?
- The precipitation and migration of plasticizers are not only related to the properties of plasticizers, but also closely related to the media they contact. Thephysical and chemical properties of the liquid medium in contact with plasticized PVC are the main factors affecting the precipitation of plasticizer. 5. Time
- What are the disadvantages of soft polyvinyl chloride (PVC) products?
- Soft polyvinyl chloride (PVC) products contain certain plasticizer components. These plasticizers will migrate, extract and volatilize at different degrees in the two processing and using processes. Plasticizer loss will not only cause the deterioration of PVC products performance, but also cause contamination of the products surface and contacts.
- What is plasticizer precipitation in PVC printing?
- PVC printing, plasticizer is out of ink and printing manufacturing taboo. Some components such as pigment particles, flavors, antistatic agents, stabilizers and so on will also be brought out in the process of plasticizer precipitation in PVC.
- Why is polyester plasticizer used in PVC plasticizer?
- Polyester plasticizer has good affinity with DOP and other small molecule plasticizers. When there is a certain amount of polyester plasticizer in PVC plasticizer, it can attract and fix other plasticizers from diffusing to the surface of PVC products, so as to reduce and prevent the migration and precipitation of plasticizers. 2.