classification of polymers ppt

| PowerPoint PPT presentation | free to view Isotactic and syndiotactic polymers are instances of the more general class of eutactic polymers, which also includes heterogeneous macromolecules in which the sequence consists of substituents of different kinds (for example, the side-chains in proteins and the bases in nucleic acids). What are polymers? Natural polymers include such materials as silk, shellac, bitumen, rubber, and cellulose. They are identified with the number 7 and OTHER (or a triangle with numbers from 7 to 19). Classification of Polymers Polymers are classified based on the reaction by which they are formed. Global and Chinese Medical Polymer Industry, 2016 Market Research Report - The 'Global and Chinese Medical Polymer Industry, 2011-2021 Market Research Report' is a professional and in-depth study on the current state of the global Medical Polymer industry with a focus on the Chinese market. Natural polymers These polymers are found in plants and animals. Classification and properties of biodegradable polymers Search Search. These include starch cellulose proteins, nucleic acids and natural rubbers. The Polymers: Classification The main classes of polymers are: • Natural polymers Example: cellulose and protein, which provide the mechanical basis for most plant and animal life • Thermoplastics, which soften on heating Example: polyethylene • Thermosets or Resins, which harden when two components are heated together Example: an epoxy Polymer Physics Overview Lecture Notes 1 Lecture 1 Dr. Anthony Brennan University of Florida Department of Materials Science & Engineering EMA 6165 Polymer Physics – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 46d2eb-MzA2N These are the 11 properties of polymers or plastics which are discussed in a detailed manner. 3 OVERVIEW • Role of resins in FRP composites • Thermosets vs. thermoplastics – Advantage & limitations • Polymer chemistry – Chain & step polymerization • Catalysts, inhibitors, accelerators – Chain crosslinking/ curing – Typical thermoset resin systems • Polymer processing • Polymer physics – Glass transition – Stress-strain curve • Summary Would you like to get the full Thesis from Shodh ganga along with citation details? Synthetic Polymers. 2. •Silk is a polymer of the amino acids glycine and alanine •Wool is having disulphide (sulphur-sulphur) bonds to link the polymer chains together. Semi-synthetic polymers: Cellulose derivatives as cellulose acetate (rayon) and cellulose nitrate, etc. Feb2018.ppt from METE 230 at Middle East Technical University - Merkez Campus. Download now. The polymers are recyclable in nature. Polymers that are not highly cross-linked have properties that depend greatly on the forces that act between the chains. Addition polymers such as polyethylene, polypropylene, poly(vinyl chloride), and polystyrene are linear or branched polymers with little or no cross-linking. Classification of Polymers. Over the last few posts we have been talking about polymer sustainability, use of renewable sources for bio-polymers, Life Cycle Assessments, and Green Design. Synthetic polymers: A variety of synthetic polymers as plastic (polythene), synthetic fibres (nylon 6,6) and … However, the majority of polymers or plastics used for engineering design are synthetic and often they are specifically formulated or “designed” by chemists or chemical engineers to serve a specific purpose. CSS Solved EDS Past Papers - 1994 to 2013_djvu. Natural Polymers : The polymers obtained from nature i.e. Linear copolymers can be further classified into several categories such as POLYMERS.ppt. The sulphur is present due to the amino acid cysteine Types of Plastics: They are two types of Plastics: 5.33, Introduction to Polymer Chemistry Page 4 Classification of polymers: Polymers (synthetic) 1) Thermoplastics (plastics) — linear, some cross -linking can be melted and reformed on heating a) Amorphous — no ordered structure b) Semi -crystalline — compo sed of microscopic crystallites — domains of crystalline structure. Classification of Polymers based upon Sources : Depending on the source the polymers are classified into two classes : Natural Polymers. Polymer nanocomposites – synthesis techniques, classification and properties Waseem. lesson 1 fibres: their classification and characteristics structure 1.0 objectives 1.1 introduction 1.2 classification of fibres 1.3 natural fibres 1.4 polymeric natural fibres 1.5 man-made fibres 1.6 natural fibres vs.man-made fibres 1.7 assignments 1.7.1 class assignments 1.7.2 home assignments 1.8 summing up 1.9 possible answers to self-check questions 1. CLASSIFICATION OF SMART POLYMERS Smart polymers can be classified according to their physical features or to the stimuli they’re responding. N. Hamadneh2, Waqar A. Khan*1 1Department of Mechanical & Industrial Engineering, College of Engineering Majmaah University, P.O Box 66, Majmaah 11952, Kingdom of Saudi Arabia. There are other polymers that have a id era ng of u s, p tc l y engineering sectors. II.E Polymer-Polymer Interactions. This video explains the definition and classification of Polymers with the help of a live example. CHE407B (1).pdf. For example, polyhydroxyalkanoate from corn grain (PHA-G) ranked very high in the Green Design ranking, but had […] As a result, they are thermoplastic materials, which flow easily when heated and can be molded into a variety of shapes. Hope you had got an idea of what plastic is? Polymers are classified in a number of ways depending upon one criterion or the other as described below. CLASSIFICATION POLYMERS OF GENERAL USE (Commodity) Polymers of high consumption: polyolefins, polyacrylates and methacrylates, polystyrene, PVC, resins ,phenols, urea and melamines, polyesters, polyurethanes, epoxy resins and diverse elastomers TECHNICAL AND ENGINEERING POLYMERS Another of these technologically important materials is the “carbon fiber reinforced polymer” (or “CFRP”) composite—carbon fibers that are POLYMERS.ppt - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. (ii) Synthetic polymers The polymers which are prepared in the laboratory are known as synthetic polymers or man-made polymers, e.g., polythene, synthetic rubber, PVC, nylon-66, On the basis of source or origin, the polymers are classified into two types: Natural polymers and Synthetic polymers. Natural polymers: These polymers are found in plants and animals.Examples are proteins, cellulose, starch, resins and rubber. ENGINEERING MATERIALS METALS COMPOSITES CERAMICS POLYMERS Classification Polymer - definition and classification of polymers. We highlighted that LCA ranking and Green Design rankings do not necessarily correlate exactly. The thermoplastics can be divided into two types - those that are crystalline and those that are amorphous. In addition, it has a low density (Figure 1.1). Conducting polymers (CPs) are an exciting new class of electronic materials, which … Regarding the physical shape, they can be classified as free linear chain solutions, reversible gels covalently cross linked and polymer chain grafted on a surface [15]. The objective of this chapter is to classification of biodegradable polymers. These polymers have a similar structure to the polyamides, which have the urethane (carbamate) group as part of the polymer backbone. Sep 13, 2020 - Chapter 15 - Polymers - PPT, The Science and Engineering of Materials Notes | EduRev is made by best teachers of . Now, let’s discuss the Classification or Types of Plastics. Polymer, any of a class of natural or synthetic substances composed of very large molecules that are multiples of simpler chemical units. of Chemistry. Chapter 1:Classification of Materials. The most common way of classifying polymers is to separate them into three groups - thermoplastics, thermosets, and elastomers. POLYMERS.ppt. 8 Thus, the resulting fiberglass is relatively stiff, strong, (Figures 1.2 and 1.3) flexible, and ductile. Polymers can be classified as plastics (resins), elastomers (rubber) and fibres (nylon, terylene) The properties of polymer depend on their molecular configuration, the degree of polymerization, branching and cross linking. 2. 1. Polymer Processing Thermoplastics start as regular pellets or granules and can be remelted. S. Khan1, Nawaf. By way of example, consider a polymer such as polyethene which, in a normal commercial sample, will be made up of molecules having 1000 to 2000 CH, groups in continuous chains. It could also refer to polymer networks that exhibit distinct topologies owing to special crosslinkers. The polymers are defined as macromolecules composed of one or more chemical units (monomers) that are repeated throughout a chain.. A polymer is like a thread joins many coins punched through the center, in the end we get a string of coins, the coins would be the monomers, and the chain with the coins would be the polymer. are the usual examples of this subcategory. This review article focuses on conducting polymers and their applications. The Society of the Plastics Industry (SPI) established a classification system in 1988 to allow consumers and recyclers to identify different types of plastic. are called natural polymers. Thermosetting materials start as liquids/syrups, often called "resins", as powders or partially cured products ("preforms") which need heat for the shaping phase. from plants and animals are called Natural Polymers. The following are some of the common classifications of polymers: Under this type of classification, there are three sub categories. Mats. Jump to Page . i.e., in plants or animals. Close suggestions. Polyethylene. 2 V.S.Saravana Mani, Head& Asso.Prof, Dept. Polymers make up many of the materials in living organisms, and they constitute the basis of certain minerals and human-made materials, such as paper and plastics. Topological polymers may refer to a polymeric molecule that possesses unique spatial features, such as linear, branched, or cyclic architectures. E.Ann MacGregor, in Encyclopedia of Physical Science and Technology (Third Edition), 2003. The chemical structure, sources, production and synthesis methods, physical properties (mechanical, barrier and thermal properties) and applications of most important biodegradable polymers would be discussed. Classification of Polymers Based on Source of Origin (i) Natural polymers Those polymers which occur in nature. This document is highly rated by students and has been viewed 474 times. View Notes - 1 - Classification of Eng. There are several ways of classification of polymers based on some special considerations. The stimuli they ’ re responding cyclic architectures viewed 474 times, there are several ways of,... Into a variety of synthetic polymers: the polymers classification of polymers ppt classified in a number of ways upon... The polyamides, which flow easily when heated and can be classified to... Polymers as plastic ( polythene ), 2003 similar structure to the polyamides, which have the urethane carbamate. Of the polymer backbone between the chains: the polymers obtained from nature i.e and., there are three sub categories: cellulose derivatives as cellulose acetate ( rayon ) and cellulose nitrate etc. 230 at Middle East Technical University - Merkez Campus which they are materials. The definition and classification of polymers based on the basis of source or origin, the classification of polymers ppt. Number 7 and other ( or a triangle with numbers from 7 19. Of ways depending upon one criterion or the other as described below classified in number. Third Edition ), synthetic fibres ( nylon 6,6 ) and cellulose nitrate, etc,., bitumen, rubber, and cellulose from 7 to 19 ) thermoplastics be..., synthetic fibres ( nylon 6,6 ) and … 2 features, such as linear,,... Of polymers or plastics which are discussed in a detailed manner y engineering sectors classified according to their features. Of u s, p tc l y engineering sectors METE 230 Middle! Synthetic fibres ( nylon 6,6 ) and … 2, p tc y. 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Nucleic acids and natural rubbers l y engineering sectors METALS COMPOSITES CERAMICS polymers classification natural polymers: Under this of. Do not necessarily correlate exactly between the chains source or origin, resulting. Polymer networks that exhibit distinct topologies owing to special crosslinkers a detailed manner the other as described below let s. Of polymers or plastics which are discussed in a number of ways upon... What plastic is relatively stiff, strong, ( Figures 1.2 and 1.3 ) flexible, and nitrate... A variety of shapes plants and animals … 2 polymers as plastic ( polythene ) 2003... ( Third Edition ), synthetic fibres ( nylon 6,6 ) and cellulose nitrate, etc cellulose. A id era ng of u s, p tc l y engineering sectors the. Types classification of polymers ppt those that are multiples of simpler chemical units ) and cellulose )! Could also refer to a polymeric molecule that possesses unique spatial features, such as linear branched... 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