Removal by Oil, Soapy Water, and Dry Powders

Reed, M. C.; Klemm, Hagen; Schulz, E.

doi:10.1021/ie50534a060

Cited by 20 publications

(3 citation statements)

References 2 publications

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“…In an opposite process, weight loss of a plasticized PVC sample immersed in an extractant can be used to measure the rate of plasticizer di usion out of PVC 82 . Introduction of the extractant species further complicates the system, as extractant molecules may enter and dilate the polymer matrix, which would signi cantly accelerate the di usion process.…”

Section: Solvent Extractionmentioning

confidence: 99%

Effects of molecular design parameters on plasticizer performance in poly(vinyl chloride): A comprehensive molecular simulation study

Panchal

Vasudevan

et al. 2022

Chemical Engineering Science

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Using all-atom molecular simulation, a wide range of plasticizers for poly(vinyl chlorid) (PVC), including ortho-and tere-phthalates, trimellitates, citrates, and various aliphatic dicarboxylates, are systematically studied. We focus on the e ects of plasticizer molecular structure on its performance, as measured by performance metrics including its thermodynamic compatibility with PVC, e ectiveness of reducing the material's Young's modulus, and migration rate in the PVC matrix. The wide variety of plasticizer types covered in the study allows us to investigate the e ects of seven molecular design parameters. Experimental ndings about the e ects of plasticizer molecular design are also compiled from various literature sources and reviewed. Comparison with experiments establishes the reliability of our simulation predictions. The study aims to provide a comprehensive set of guidelines for the selection and design of high-performance plasticizers at the molecular level. Molecular mechanisms for how each design parameter in uences plasticizer performance metrics are also discussed. Moreover, we report a nontrivial dependence of plasticizer migration rate on temperature, which reconciles seemingly con icting experimental reports on the migration tendency of di erent plasticizers.

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Section: Solvent Extractionmentioning

confidence: 99%

Effects of molecular design parameters on plasticizer performance in poly(vinyl chloride): A comprehensive molecular simulation study

Panchal

Vasudevan

et al. 2022

Chemical Engineering Science

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“…To determine the dependence of factor k on the thickness of the polymeric material, experimental data obtained in earlier studies were used [15][16][17][18], related to investigations of the desorption kinetics of components from polymer films of different thickness. The experimental regimes of the cited literature meet the requirements for using Equation (1) considered above.…”

mentioning

confidence: 99%

“…By way of example, in Figure 1 Table 2. The influence of the thickness of PVC films on the kinetics of extraction of DOP with mineral oil and migration on contact of PVC with powder [18] Extraction with mineral oil Migration on contact with powder…”

mentioning

confidence: 99%

An Empirical Model for Predicting the Kinetics of Desorption of Ingredients from Polymeric Materials of Different Thickness

Дедов¹

2017

International Polymer Science and Technology

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Polyblends. I. Mechanical properties of polyblends of butadiene–acrylonitrile elastomers and copolymers of vinyl stearate and vinyl chloride

Jordan

Artymyshyn

Riser

et al. 1976

J of Applied Polymer Sci

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SynopsisSeveral nitrile rubber elastomers were polyblended, across the composition range, with selected polymeric compositions containing vinyl chloride. The compositions incorporated were (a) bulk poly(viny1 chloride) (PVC); (b) copolymers of vinyl stearate and vinyl chloride containing, respectively, 0.21, 0.36, and 0.47 weight fraction of the vinyl ester; and (c) mixtures containing the same weight fractions of di-2-ethylhexyl phthalate (DOP) with PVC. Mechanical, viscoelastic, optical, and volatility properties were studied on all blends in this first paper. To accurately compare the mechanical properties of polyblends of different systems, a criterion of mechanical equivalence was taken as the observance of similar stresses at break for compositions selected to have identical 100% moduli. Optimum mechanical equivalence, therefore, occurred at the largest ratios of 100% modulus to break stress for all systems compared. Optimum mechanical property equivalence was observed for NBR blends with PVC and for similar blends of both internally and externally plasticized systems containing 0.21 weight fraction of plasticizer. However, considerably more nitrile rubber was needed for PVC blends to acquire the properties of the plasticized systems. Mechanical equivalence was observed, hut was not optimum for systems having more plasticizer because tensile strengths were lower. Polyblending with NBR improved the toughness and low-temperature properties of starting vinyl stearate copolymers. Improved toughness was indicated by the expansion of areas under stress-strain curves. Refractive index matching appeared to explain the transparency of the best films and their relative freedom from haze. On heating a t 85"C, poly(viny1 chloride) and the copolymer polyblends suffered no volatility loss. Volatility of DOP from the blends was 1.5 times greater than for PVC-DOP mixtures. Because modulus-temperature curves and mechanical Tg values of the filler component shifted with composition, the mechanical behavior of these blends was in harmony with an accepted standard of interdomain compatibility,

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Removal by Oil, Soapy Water, and Dry Powders

Cited by 20 publications

References 2 publications

Effects of molecular design parameters on plasticizer performance in poly(vinyl chloride): A comprehensive molecular simulation study

Effects of molecular design parameters on plasticizer performance in poly(vinyl chloride): A comprehensive molecular simulation study

An Empirical Model for Predicting the Kinetics of Desorption of Ingredients from Polymeric Materials of Different Thickness

Polyblends. I. Mechanical properties of polyblends of butadiene–acrylonitrile elastomers and copolymers of vinyl stearate and vinyl chloride

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