ASSESSMENT OF FLUID FLOW PATHS AND DISTRIBUTION IN CONIFERS

摘要

Wood in its natural condition is vulnerable to biological decay caused by fungi, insects and bacteria. To facilitate its outdoor application and enhance the durability, wood protection systems are applied ever since. Due to restrictions for established but hazardous wood protection treatments, newer systems are utilized. The protection agents' uniform allocation within the wooden matrix is essential for successful performance of wood protection approaches. Hence a detailed knowledge about transport mechanisms and the different penetrating properties is essential for design and development of successful impregnation wood protectives. Both commercial wood protectives and other chemical solutions are used for the study of cavity sizes, distribution patterns, microdistribution and general flow paths of protective agents in wood. In principal, the tracing chemicals have to be aligned to the aim of the study. This review paper is prepared to give an overview of chemicals and methods utilized for studyingcell wall accessibility, fluid flow and its inhibiting factors as well as the distribution of chemicals over the tissue and the microdistribution within the wood cell wall.