Gums, Resins, Latex, Etc.
Gums, Resins, Latex, Etc. PBIO1030
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This 6 page Class Notes was uploaded by Steven Hernandez on Sunday October 18, 2015. The Class Notes belongs to PBIO1030 at Ohio University taught by Dr. Thompson in Summer 2015. Since its upload, it has received 27 views. For similar materials see Plants and People in Biomedical Sciences at Ohio University.
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Date Created: 10/18/15
PBIO Gums Resins and Latex Monday October 5 2015 Gums water soluble or swell up with water common in plants of dry regions used primarily as adhesives Ex acacia tree Resins insoluble in water harden gradually as the oil the contain evaporates varnishes ex spirit gum Latex fluids with mixture of organic compounds ex rubber angiosperms made in labs factories as well as from plants Gymnosperms many produce resin but not latex Monday October 5 2015 Uses for Latex Ficus Fig soap but can be an irritant medical use Timeline Rubber Indigenous 1 876 Started to collect seeds that produce rubber first plantations to massproduce rubber 19403 Fear during WWII that rubber production was going to be lost out of 1970 Mass production of tires from natural rubber Alternative Sources for Rubber Guayule shrub Source of hypoallergenic rubber and latex products If you are allergic to latex this can be the solution Bridgestone investing tens of millions of dollars in a new research center in Arizona Increasing Fuel Economy Silica mixed with rubber in tire treads Increases strength of tires reduces resistance improving fuel economy Monday October 5 2015 better traction on wet surfaces silica is usually mined which is limited and non renewable Solution Rice 700 million tons of rice is harvested annually Rice husk can be burned to make fuel Silica remains as a mineral from ash which can then be used in tires Wednesday October 7 2015 PBIO Resins Fibers Resins Has big spiritual use Cultures like Mayan and Aztec use resins often day of the dead Mexico Sticky and harder oozes out like latex Big in the turpentine industry paint really strong smell Insoluble in water gums water soluble Has antimicrobial properties Amber fossilized resin gtgtgt animal inside wellpreserved from decomposition Big with embalming preserving and mummification common with ancient Egypt Several different processes done to preserve body from decomposition Fibers Used for ropes baskets cloth and other woven materials Come from the cell wall more specifically cellulose Common example switchgrass second generation fuel Fibers are classified in two ways Sections of the plant from which they come from on top of seeds Different usage by humans cordage textile filling Wednesday October 7 2015 Table I8l Important Plant Fibers and Their Uses Plant Scientific Name Family Type of Fiber Use OE Cocos mo cra Anna s c Surfzcc Films cordago Couon Coxsz hmutum Maivacoao Surface Comm clmh Conme barbodmse ax mum usrtatrsmwm Liuccae Bast Linen Hemp Cannot wave Cmrumtuc Bast Hemp cloth was cordago jute Corrhous Spp Malvxuo 83st Burlap szok Cuba pentond39o Milne Surhcc Fa ling Manila hemp Muso will Muuceae Leaf Cordage Pm Mano camom Brome39nceae Leaf Cloth Ramie Godwinno mm Umcaltcac Bast Rune cloth Saul Agave molm Apvaccac Leaf Cordage mam ng Agave auruoydcs Oldest textiles discovered 30000 year old flax fivers from a cave in Republic of Georgia stone age huntergatherers Fiber cords for binding stone tools weaving baskets spinning thread Seed Old paints stains varnishes linoleum oiloloths Wednesday October 7 2015 Papyrus used in boats baskets shoes
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