Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 407469
Title Diffusion Coefficients of Polychlorinated Biphenyls and Polycyclic Aromatic Hydrocarbons in Polydimethylsiloxane and Low-Density Polylethylene Polymers
Author(s) Rusina, T.; Smedes, F.; Klanova, J.
Source Journal of Applied Polymer Science 116 (2010)3. - ISSN 0021-8995 - p. 1803 - 1810.
Department(s) Sub-department of Toxicology
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) polyethylene ldpe films - organic-compounds - systems - selection - samplers - size
Abstract Diffusion coefficients (D) of polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) were determined by film-stacking technique in low-density polyethylene (LDPE) and two types of polydimethylsiloxane (PDMS) (also known as silicone rubber, SR) with the trade names AlteSil (TM) and Silastic. The estimated values of D for PCBs and PAHs over a wide range of hydrophobicity were 2-2.5 orders of magnitude lower in LDPE than in SR polymers. Log D (m(2) s(-1)) of PCBs ranged from -10.1 to -10.9 for SRs and from -12.4 to -13.7 for LDPE. For PAHs these ranges were -9.8 to -11.4 for SRs and -11.9 to -13.7 for LDPE. Compared with the D values calculated in water, D were 1-2 and 3-4 orders of magnitude lower in SR and LDPE, respectively. For PAH molecules, D was lower than for PCBs with a similar molecular weight, probably because of their more rigid structure. The range of log D for PCBs in SR was only 0.5 log units (factor of 3.2) versus 1.2 log units (factor of 16) in LDPE. Although compound classes showed different relations, a linear relation of D with total surface area was the most universal. This relation may be used for prediction of D values in SR and LDPE polymers for other organic compounds. (C) 201.0 Wiley Periodicals, Inc. J Appl Polym Sci 116: 1803-1810, 2010
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