please be specific and scientific.
The spiny leaves of various species of the genus Ananas (Pineapple) yield a hard fiber called gravata in South America and pi?a, or pineapple cloth, in the Philippines. A. sativa is the cultivated pineapple Pi?a is a fiber made from the leaves of a pineapple and is commonly used in the Philippines. It is sometimes combined with silk or polyester to create a textile fabric. The end fabric is lightweight, easy to care for and has an elegant appearance similar to linen. The fibres themselves are bast fibres ( Around the phloem ) and they are lignified .
Pineapple leaf fiber (PALF) has a very high cellulose content which is a very strong natural polymer. PALF has 75% cellulose (young grasses and legumes has 15% cellulose for example)
