Biology 2217B Chapter Notes - Chapter Paper: Cai Lun, Coated Paper, Amate
28 Jul 2020
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Paper: previously - wood, metal, stone, leaves, ceramics, bark, papyrus, parchment, cloth. Paper: tsai lun - chinese court official invented paper in 105 ad. Papyrus: egyptians, not considered true paper - more like cloth. Bark cloth: paper mulberry - broussontetia, more laminate like papyrus. Amatl - maya aztec paper: boiling the inner bark of fig trees. Source of pulp - linen and cotton rags. 15th century johannes gutenberg - movable type for making paper for books. 1803: paper still hand made and expensive. Increased paper making a lot - rags were at a shortage so much that the mummies were stripped. Absorbs water fast: canadian geographic magazine - printed on the waste, bagasse fibre - from crushed sugar cane stalks, used in ww2 in england - shortage of pulpwood, esparto plant. Little strength - does not split into fibrils easily. True paper: pulp - slurry of fibers in water. Source - bark, stems, leaves, old rags, wood.
