Modeling Emissions of Volatile Organic Compounds from New Carpets

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A simple model is proposed to account for observed emissions of volatile organic compounds (VOCs) from new carpets. The model assumes that the VOCs originate predominantly in a uniform slab of polymer backing material. Parameters for the model (the initial concentration of a VOC in the polymer, a diffusion coefficient and an equilibrium polymer/air partition coefficient) are obtained from experimental data produced by a previous chamber study. The diffusion coefficients generally decrease as the molecular weight of the VOCs increase, while the polymer/air partition coefficients generally increase as the vapor pressure of the compounds decrease. In addition, for two of ... continued below

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Little, J.C.; Hodgson, A.T. & Gadgil, A.J. February 1, 1993.

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Description

A simple model is proposed to account for observed emissions of volatile organic compounds (VOCs) from new carpets. The model assumes that the VOCs originate predominantly in a uniform slab of polymer backing material. Parameters for the model (the initial concentration of a VOC in the polymer, a diffusion coefficient and an equilibrium polymer/air partition coefficient) are obtained from experimental data produced by a previous chamber study. The diffusion coefficients generally decrease as the molecular weight of the VOCs increase, while the polymer/air partition coefficients generally increase as the vapor pressure of the compounds decrease. In addition, for two of the study carpets that have a styrene-butadiene rubber (SBR) backing, the diffusion and partition coefficients are similar to independently reported values for SBR. The results suggest that predictions of VOCs emissions from new carpets may be possible based solely on a knowledge of the physical properties of the relevant compounds and the carpet backing material. However, a more rigorous validation of the model is desirable.

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  • Journal Name: Atmospheric Environment; Journal Volume: 28; Journal Issue: 2; Related Information: Journal Publication Date: 1/1/1994

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  • Report No.: LBL-33318
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 939275
  • Archival Resource Key: ark:/67531/metadc899486

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  • February 1, 1993

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  • Sept. 27, 2016, 1:39 a.m.

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  • Jan. 4, 2017, 5:39 p.m.

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Little, J.C.; Hodgson, A.T. & Gadgil, A.J. Modeling Emissions of Volatile Organic Compounds from New Carpets, article, February 1, 1993; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc899486/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.