TY - JOUR
T1 - Hygroscopic behaviour of paper and books
AU - Derluyn, Hannelore
AU - Janssen, Hans
AU - Diepens, Jan
AU - Derome, Dominique
AU - Carmeliet, Jan
PY - 2007
Y1 - 2007
N2 - This study presents experimental analysis and numerical modeling of hygroscopic moisture buffering by paper and books. First, a literature review of moisture transport properties of paper is presented. Experimental work on two paper types includes SEM analysis of the paper structure, determination of sorption isotherms and water vapor permeability measurements. A hysteretic model for paper
is presented, which is based on the measurement of the main adsorption and desorption curves. It is shown that the water vapor permeability in a hysteretic model is dependent on the moisture content and not on the relative humidity. Books consist of several paper sheets with air layers between the sheets. To take the air layers into
account, a parallel transport model is proposed to determine the effective moisture transport properties of books taking into account the air layers. The dynamic
hygroscopic behavior of small book samples was measured. It is shown that, although the water vapor permeability of different paper types can be quite different, the effusivity of a book highly depends on the presence of the air layers and can therefore remain comparable for different paper types.
AB - This study presents experimental analysis and numerical modeling of hygroscopic moisture buffering by paper and books. First, a literature review of moisture transport properties of paper is presented. Experimental work on two paper types includes SEM analysis of the paper structure, determination of sorption isotherms and water vapor permeability measurements. A hysteretic model for paper
is presented, which is based on the measurement of the main adsorption and desorption curves. It is shown that the water vapor permeability in a hysteretic model is dependent on the moisture content and not on the relative humidity. Books consist of several paper sheets with air layers between the sheets. To take the air layers into
account, a parallel transport model is proposed to determine the effective moisture transport properties of books taking into account the air layers. The dynamic
hygroscopic behavior of small book samples was measured. It is shown that, although the water vapor permeability of different paper types can be quite different, the effusivity of a book highly depends on the presence of the air layers and can therefore remain comparable for different paper types.
U2 - 10.1177/1744259107079143
DO - 10.1177/1744259107079143
M3 - Journal article
SN - 1744-2591
VL - 31
SP - 9
EP - 34
JO - Journal of Building Physics
JF - Journal of Building Physics
IS - 1
ER -