Carbohydrate Polymers 39 (1999) 109–117 Compositional features of polysaccharides from Aloe vera (Aloe barbadensis Miller) plant tissues ´ ´ Antoni Femenia*‚ Emma S. Sanchez‚ Susana Simal‚ Carmen Rossello ´ ´ Enginyeria Quımica‚ Departament de Quımica. Universitat de les Illes Balears‚ Ctra. Valldemossa km 7.5‚ 07071 Palma de Mallorca‚ Illes Balears‚ Spain Received 22 September 1998; received in revised form 27 October 1998; accepted 20 November 1998 Abstract A complete chemical characterisation
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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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COMPANY PROFILE: Murali Krishna polymers are established in the year 1997. It involves in the operations related to production of plastic bags and flexo printing. The owner of this company is M.S. Muralidhar. He identified the growth in the usage of plastic bags across the country. The idea of starting a firm with manufacturing of plastic bags intrigues him. He found the inappropriate number of plastic producing firms irrespective of its potential market in southern India at that time. As a result
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Polymerization reaCTIONS polymers are high-molecular-weight compounds‚ fashioned by the aggregation of many smaller molecules called monomers. Ex. plastics that have so changed society and the natural and synthetic fibers used in clothing are polymers. Classification of polymers Homopolymers - consist of repeated long chains or structures of the same monomer unit. Ex. PVC(polyvinyl chloride) Copolymers - polymers that consist of more than one molecule. Trimers - molecules consisting
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Polysar Organization… 29 Exhibit 6 H-NBR Market Demand… 30 Exhibit 7 1987 Tornac Rubber Investment Project Spending Profile… 31 1. Identification 1.1 Background In the late 1980s‚ early 1990s‚ the synthetic rubber polymer business was set to experience an unprecedented growth worldwide. Although that product had been developed in the 1930s‚ the demand for higher quality has been ongoing. Low quality and low priced rubber comprised the majority of the market; however
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"thermoset". Bakelite is a space-network polymer. Unlike linear and branched polymers‚ which are composed of long molecules that make them more or less crystalline‚ space-network polymers are highly and irregularly cross-linked throughout the structure. The sheer extent of the cross-linking means that a sample of the material is essentially one gigantic molecule. Although heat softens and melts linear and branched polymers‚ heating doesn ’t soften space-network polymers because such a softening would require
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MATERIAL SCIENCE FIBRE REINFORCED POLYMER REINFORCEMENT BAR ABSTRACT: In this paper we are going see about the new technology of reinforcement that is FRP (Fiber reinforced polymers) rebars and its all characteristics. Such as its high strength‚ lightweight characteristic‚ creep characteristic‚ resistant to environmental factor like corrosion effect‚ fire performance‚ features and benefits‚ application‚ its materials and manufacturing‚ codes and specification‚ status and its barriers.
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reinforced polymer Name Institutional analysis Introduction Carbon Fibre reinforced polymer commonly known as CFRP is a very strong composite material that is majorly preferred for many automotive and aeronautical application due to the fact that despite their strength that still light that the traditional metallic materials. The polymers often used to make this composite material is epoxy‚ polyester‚ vinyl and even nylon. Thus in making CFRP carbon fibre is often combined with polymers such as epoxy
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Nappy recycling plant Table of Contents 1. Introduction 3 2. Purpose statement 3 3. Delimitation 3 4. Methods and materials 3 5. Nappy recycling advantages 3 6. Diaper content 4 7. Recycling process 4 8. Conclusion 5 9. References 6 1. Introduction Even thought the reusable diapers have been introduced‚ people still use more and more diapers every year. It is not a secret that human population is growing‚ so the amount of diapers is growing too. Diapers’ waste
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Disposable Diapers John Smith Environmental Science with Lab SPRB12 - Sec C Professor Mukami Disposable diapers came about during World War II‚ as there was a shortage of cotton to make cloth diapers. One of the first diapers to be developed was a plastic covering that was made from a shower curtain and had layers of tissue paper as an absorbent lining. During the 1970’s the demand for disposable diapers had increase and there were improvements made to reduce the bulkiness
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