The Physical Properties of Paper in Relation to its Micro- and Macrostructure – Prepared Contribution

Abstract

The properties of paper are defined on two sampling scales, depending on whether the micro- or the macroscopic physical characteristics of the sheet are of interest. Two models are presented for the structure of homogenized paper, based either on the orientational distribution of the fibres or on that of the interfaces of pores and fibres . Orientational anisotropy arises on the scale of the fibre aggregates through shearing between flocs. Accurate tests were performed of the floc anisotropy, which influences the properties of paper on the size scale of a few mm2.