ABSTRACT
Leaf fibres are obtained from the leaves of plants by a process in which the leaf is crushed and scraped to remove the fibres, followed by drying. Leaf fibres are usually harder, stiffer and coarser in texture than those derived from the stem. In the leaf they provide strength and rigidity, and support water conducting vessels. They are surrounded by cellular tissue and gummy substances, which are separated from the fibres during the processing of the leaf. The most common fibres in this category are sisal, henequen and abaca. Sisal has been used for many years for reinforcing gypsum products. Characteristic properties are provided in Table 11.1.
