Fantastic Plastic an Optimistic Prospect Introduction A. Background of the study A plastic is a type of synthetic or man-made polymer; similar in many ways to natural resins found in trees and other plants. Webster’s Dictionary defines polymers as: any of various complex organic compounds produced by polymerization‚ capable of being molded‚ extruded‚ cast into various shapes and films‚ or drawn into filaments and then used as textile fibers. Plastics are durable that is why most of
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assist the approach of cell transplantation and to improve the efficacy of the therapy (Tabata‚ 2009). Among the biomaterials‚ the natural and synthetic biodegradable ones are the most commonly used polymers. These polymers attracted interest because of their flexibility in chemical manipulation (Vazquez‚ Ruiz‚ Zúñiga‚ Koppel & Olvera‚ 2015). Natural polymers belong to the first biodegradable biomaterials. They have a high level of biocompatibility leading for the cells to easily attach and grow with
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9.1 Manufacture of Sulphuric Acid 1. State uses of sulphuric acid in daily life. - lead acid batteries in automobiles and for home use - extraction of elements from ores - manufacturing of fertilizers 2.The following shows an incomplete flow chart of the Contact process. a) b)Chemical equation A. B. C. D. 3. Briefly explain the sources of sulphuric dioxide gas in atmosphere. -Sulphur dioxide is produced mainly from the combustion of fossil fuels
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HISTORY OF TEXTILE No one knows exact beginning of spinning and weaving of textiles. However‚ it is thought that weaving originated earlier than spinning. Primitive people may have observed the interlaced grass and twigs in the nests of birds or they have seen rushes naturally interlacing as they grew and discovered formation of cloth‚ baskets‚ nets and huts etc. Spinning developed later when people may have thought to improve raw material. People started to use fibers found in nature and hand
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An epoxy is a polymer that contains the functional group epoxide. The epoxide group is formed as ether within a three-ring atom. These atoms form a triangular shape‚ which will create a strain on the functional group. The strain within the group makes epoxides unstable and highly combustible. When an epoxide group reacts with itself or with a catalyst or crosslinking agent‚ it will cure to become an epoxy resin. Epoxy resins are durable‚ chemical and stain resistant‚ mechanically strong‚ heat and
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(Periplaneta Americana)‚ also known as the waterbug or misidentified as the palmetto bug is the largest species of common cockroach‚ and often considered as pest. Breed- to produce offspring by hatching or gestation. Chitin- is a long chain polymer of N-acetylglucosamine‚ a derivative of glucose‚ and is found in many places throughout the natural world. Laboratory- is a facility that provides controlled conditions in which scientific research‚ experiments‚ and measurement may be performed
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purpose of my experiment is to figure out which type of synthetic rubber is best to use on bicycle tires‚ neoprene‚ latex‚ or silicone. Synthetic rubber is a polymer. A chemical compound that includes many molecules that form one large molecule. Synthetic rubber is also an artificial elastomer‚ a material that undergoes elastic deformation under stress‚ but then turns into its original shape. In 1879‚ Frenchman Gustave Bouchardat created synthetic rubber during an experiment‚ he created isoprene. During
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Title: Cassava starch as an effective component for Ideal Biodegradable Plastic Proponent: Zhaira Morysette L. Maco‚ III-Narra student Introduction: Inventions have evolved and continue to evolve such that after several years of study‚ research and experimentation reach great developments. With continuing efforts to investigate the constituents of Philippine plants‚ we have pursued investigation of starch of the cassava plant (Manihot esculenta). Cassava tubers were gathered‚ ground and squeezed
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Cassava starch as an effective component for Ideal Biodegradable Plastics A Science Investigatory Project presented to Philippine Women’s College of Davao In partial fulfillment Of the requirements in Science and Technology IV (PHYSICS) To Mr. Kenny Lloyd L. Angon Physics Teacher By Gabriel Arañas Danielle Andrea M. Ibaos Jascha Bridget Lim John Vergel Mori Grade 10 – Probity March 2013 Acknowledgement Before I acknowledge the people who supported this Science Investigatory
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properties of conventional synthetics‚ whilst having less destructive effects on the environment (3). These compostable materials are able to break down‚ unlike styrofoam‚ providing a greener environment (3). The seventh principle of green chemistry regarding the use of renewable feedstocks largely focuses on reducing the production of hazardous waste and moving away from petroleum dependence to make products (4). Therefore‚ the environment benefits from replacing synthetic products with mushroom-based
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