background information 2 – 4 Tensile Testing 5 - 7 Classification of Polymers 8 - 9 Summary of Classification of Polymers and Molecular Weight 10 Structure of the Materials Used in this Experiment 11 - 12 Experimental Procedures
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diffusion for oral extened release by using micelle-forming properties and counter –charge polymer. -how it works: - a highly water soluble drug was added to a gel forming polymer matrix but with a counter polymer which slows down drug diffusion out of the matrix Advantage – for water soluble drugs‚ sustained release‚ simple to make Disadvantage – not for all water soluble drugs‚ make sure that counter-charge polymer does not bind with too high affinity to the drug‚ and does not interact with the drug
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Bull. Mater. Sci.‚ Vol. 25‚ No. 6‚ November 2002‚ pp. 527–531. © Indian Academy of Sciences. Studies of properties of rubber wood with impregnation of polymer RASHMI R DEVI and T K MAJI* Department of Chemical Sciences‚ Tezpur University‚ Tezpur 784 028‚ India Abstract. Impregnation of rubber wood has been carried out under different conditions by using styrene as grafting monomer and glycidyl methacrylate (GMA) as crosslinker. Properties such as dimensional stability‚ water absorption‚ hardness
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colloidal delivery system. Hydrogels: Hydrogel is a colloidal gel in which water is the dispersion medium. It (also called aquagel) is a network of polymer chains that are hydrophilic‚ sometimes found as a colloidal gel in which water is the dispersion medium. Hydrogels are highly absorbent (they can contain over 99% water) natural or synthetic polymers. Hydrogels also possess a degree of flexibility very similar to natural tissue‚ due to their significant water content. These hydrogels have the ability
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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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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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Comparison of Effective Biodegradable Plastics from; Saba(Musa paradisiaca) and Taro (Colocasia esculenta) An Investigatory project Submitted to the College of Arts and Sciences in Partial Fulfillment of the Requirements in Plant and Animal Genetics Submitted by: BS Biology 3 Abstract: The purpose of this experiment is to help one of the biggest issues concerning the environment‚ the massive production of plastics. The researchers will use environment-friendly
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Additive: A Techno-Commercial Profile B.G. SAMPAT E-mail: bgsampat@bom3.vsnl.net.in INTRODUCTION Every activity in modern life is influenced by plastics and many depend entirely on plastic products. All these plastic products are made from the essential polymer mixed with a complex blend of materials known collectively as additives. Without additives‚ plastics would not work‚ but with them they can be made safer‚ cleaner‚ tougher and more colourful. Additives cost money‚ of course‚ but by reducing production
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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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Chemistry Name: Chun Ka Yuen (52180145) Group: C Date of experiment: 30/3/2012 Date of report: 3/4/2012 Experiment 5: Polymers Aim: This experiment is to prepare polymeric materials including polystyrene‚ Nylon6‚ 10‚ and cellulose triacetate. Introduction: A polymer consists of repeating subunits in the form of –A-A-A-A-A- or A-B-A-B-A-B-‚ where A and B are different subunits. These sub-units are typically connected by covalent chemical
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