Measuring Plasticizer Content in Polyvinyl Chloride (PVC)
Polyvinyl chloride (PVC), a multipurpose thermoplastic, is used for construction, floor coverings, packaging, bottles, coatings and tubing. PVC can be hard or flexible, based on the quantity of fillers, plasticizers, additives and pigments added.
Determination of Plasticizer Content in PVC by FT-NIR
The Experiment. An experiment was conducted to develop an FT-NIR method for the determination of the plasticizer content in polyvinyl chloride (PVC). PVC is used for many products such as toys, cables and foils. The plasticizer content differs depending on the commercial use of the material since the level of plasticizer determines the physical
Methods for determination of plasticizer migration
To impart the PVC coating with flexibility and bendability, a substantial amount (40–120 wt%) of plasticizers must be added. Plasticizer acts like a lubricant that intercalates the rigid PVC chains for an easy movement, otherwise pristine PVC would be too brittle for any practical purpose.
#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
Methods for determination of plasticizer migration
Pristine PVC materials are always too brittle for any practical purpose. Hence, to accommodate the softness requirements of artificial leather, a large amount (40-120 wt%) of plasticizer must...
- How much plasticizer can be detected in PVC?
- With only four scans, detection limits down to 2.49 wt% of plasticizer in PVC were achieved by utilizing a simple workflow and non-deuterated solvents. This detection limit was only three times larger than in a comparative high-field NMR spectroscopy study [38, 51].
- What is the plasticizer content of PVC?
- The plasticizer content differs depending on the commercial use of the material since the level of plasticizer determines the physical properties of the PVC. The plasticizer used for the material in this study was dioctyl phthalate (DOP). The amount of DOP present in PVC is typically determined by gravimetry after Soxhlet extraction.
- 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.
- How do you determine plasticizer content?
- Another way to indirectly determine the plasticizer content is by Near Infrared (linked with chemometric analysis) or by mechanical testing of the product flexibility or hardness. A rapid, easy to operate, easy to calibrate, alternative method is provided by the MQC+ benchtop Nuclear Magnetic Resonance (NMR) analyzer.
- Can FT-NIR determine plasticizer content in polyvinyl chloride (PVC)?
- Broad, overlapping and low intensity peaks usually dominate the NIR spectrum. An experiment was conducted to develop an FT-NIR method for the determination of the plasticizer content in polyvinyl chloride (PVC). PVC is used for many products such as toys, cables and foils.
- How to monitor plasticizer concentration profiles in coextruded PVC pipes?
- A spectroscopic approach to monitor concentration profiles in plasticized PVC. Cross-validation of the depth-profile analysis by gravimetric measurements. The uptake kinetics is strongly influenced by plasticizer nature and PVC state. Technologically relevant for plasticizer migration studies in coextruded PVC pipes.
