Analytical methods for the determination of DEHP plasticizer
Only semi-quantitative estimations of additives such as adipates may be feasible. On the whole, infrared spectroscopy is useful in the analysis of the chemical types of plasticizer but is not precise enough for conclusive identification of the exact plasticizer, especially in mixtures with other extracted additives.
Machine learning-assisted non-destructive plasticizer
As proof of concept, we used six common but distinctly different approaches and compared their efficacy in solving the problem of identification and quantification of plasticizers in PVC. Linear...
Identification and quantitative determination of plasticizer
In this application, the identification and quantitative determination of phthalate ester plasticizer in A1 size PVC sheet has been carried out by using of a single bounce ATR for large-sized sample (Figure 2). Figure 2. Single reflection ATR for large-sized sample (FT/IR-4600 with ATR PRO510T-S)
Methods for determination of plasticizer migration
Plasticizer migration is responsible for premature coating failure in polyvinyl chloride (PVC) synthetic materials that continue to benefit our daily life as a reliable and cost-efficient simulant of genuine leather. In this context, the establishment of standard assays that measure the migration rate of plasticizers under varying scenarios plays a pivotal role in comparing durability of those
Quantitative GPC Analysis of PVC and Plasticizers
GPC using PLgel MIXED-C columns permits the determination not only of the molecular weight distribution of PVC samples, but also the identification and quantification of their plasticizers. PLgel 5 m MIXED-C columns are designed for rapid polymer analysis.
- Can We quantify plasticizers in solvent mixtures with benchtop proton NMR spectroscopy?
- The feasibility of recognizing and quantifying plasticizers in solvent mixtures with benchtop proton NMR spectroscopy and IHM was presented for the first time. For this, a methodology to quantify the absolute concentrations using IHM was introduced and validated on mixture samples.
- How spectral hard modeling enables the quantification of plasticizer mixtures?
- Apart from the rapid data acquisition, the use of spectral hard modeling enabled the quantification of plasticizer mixtures while using only 4 to 6 training samples per component. Despite strongly overlapping signals in the NMR spectra, various plasticizers were differentiated and quantified, as exemplarily demonstrated for binary mixtures.
- Do plasticizers comply with EU regulations?
- Compliance with EU regulations concerning plasticizer use can be checked. A novel approach is introduced for the fast, reliable, and low-cost recognition and quantification of plasticizers in plasticizers mixtures. It uses benchtop 1 H NMR spectroscopy and indirect hard modeling, a mechanistic multivariate regression technique.
- What substrates are used for plasticizer detection using Raman spectroscopy?
- Nowadays, the substrates used for plasticizer detection using surface-enhanced Raman spectroscopy are mainly gold and silver nanoparticles.
- 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].
- Can benchtop NMR spectroscopy detect plasticizers in PVC?
- The presented results display benchtop 1 H NMR spectroscopy as a convenient method to swiftly recognize and quantify plasticizers in PVC with high analytical throughput. In addition, the results show that applying IHM may allow for precise microchemical analysis of complex samples by benchtop NMR spectroscopy.
