• what is a polymer?

    What Is a Polymer?

    The term polymer is commonly used in the plastics and composites industry, often as a synonym for plastic or resin.Actually, polymers include a range of materials with a variety of properties. They are found in common household goods, in clothing and toys, in construction materials and insulation, and in numerous other products.

  • polymer

    Polymer

    OverviewPropertiesCommon examplesSynthesisStandardized nomenclatureCharacterizationDegradationSee also

    Polymer properties are broadly divided into several classes based on the scale at which the property is defined as well as upon its physical basis. The most basic property of a polymer is the identity of its constituent monomers. A second set of properties, known as microstructure, essentially describes the arrangement of these monomers within the polymer at the scale of a single chain. These basic structural properties play a major role in determining bulk physical properties of the polymer, which describe how

  • polymer description, examples, & types britannica

    polymer Description, Examples, & Types Britannica

    Polymers are not restricted to monomers of the same chemical composition or molecular weight and structure. Some natural polymers are composed of one kind of monomer. Most natural and synthetic polymers, however, are made up of two or more different types of monomers; such polymers

  • synthetic polymers types and examples polymer uses

    Synthetic Polymers Types and Examples Polymer Uses

    Synthetic polymers are sometimes referred as “plastics”, of which the well-known ones are nylon and polyethylene. The polymers which are formed by linking monomer units, without the any change of material, are known to as addition polymers or also called as chain-growth polymers. All these are said to be synthetic polymers.

  • biopolymer

    Biopolymer

    Cellulose is the most common organic compound and biopolymer on Earth. About 33 percent of all plant matter is cellulose. The cellulose content of cotton is 90 percent, for wood it is 50 percent. Biopolymers versus synthetic polymers. A major defining difference between biopolymers and synthetic polymers can be found in their structures. All polymers are made of repetitive units called

  • what is a polymer? live science

    What Is a Polymer? Live Science

    Chemical ReactionsUses of PolymersFuture of PolymersHermann Staudinger, a professor of organic chemistry at the Eidgenössische Technische Hochschule (University of Applied Sciences) in Zurich, is the father of modern polymer development. His research in the 1920s led the way to modern manipulations of both natural and synthetic polymers. He coined two terms that are key to understanding polymers: polymerization and macromolecules, according to the American Chemical So在livescience上查看更多信息

    Major industrial polymers Britannica

    Major industrial polymers, chemical compounds used in the manufacture of synthetic industrial materials. In the commercial production of plastics, elastomers, man-made fibres, adhesives, and surface coatings, a tremendous variety of polymers are used. There are many ways to classify these compounds.

  • playing with polymers scientific american

    Playing with Polymers Scientific American

    2012-01-05· A polymer is a long molecule that is mostly made up of many similar repeating units. In the case of polyvinyl acetate, each repeating unit contains an

  • what are natural polymers? sciencing

    What Are Natural Polymers? Sciencing

    While most natural polymers are condensation polymers, natural rubber is an addition polymer formed from isoprene monomers. Natural rubber bounces and stretches because of the monomer connections. The monomers of a similar natural polymer called gutta-percha connect differently, resulting in a brittle rather than flexible material.

  • what are some examples of polymers?

    What Are Some Examples of Polymers?

    2019-06-27· A polymer is a large molecule that is made up of repeating subunits connected to each other by chemical bonds.Do you need some examples of polymers? Here is a list of materials that are natural and synthetic polymers, plus some examples of materials that are not polymers at all.

  • the basics: polymer definition and properties

    The Basics: Polymer Definition and Properties

    The other group, the thermosets, cannot be remelted. Once these polymers are formed, reheating will cause the material to ultimately degrade, but not melt. Every polymer has very distinct characteristics, but most polymers have the following general attributes. Polymers can be very resistant to chemicals.

  • polymers and plastics: a chemical introduction

    Polymers and plastics: a chemical introduction

    Polymers can be classified in ways that reflect their chemical makeup, or perhaps more importantly, their properties and applications. Many of these factors are strongly interdependent, and most are discussed in much more detail in subsequent sections of this page.

  • polymers michigan state university

    Polymers Michigan State University

    2.Thermosetting vs. Thermoplastic Polymers. Most of the polymers described above are classified as thermoplastic. This reflects the fact that above T g they may be shaped or pressed into molds, spun or cast from melts or dissolved in suitable solvents for later fashioning. Because of their high melting point and poor solubility in most solvents

  • polymer journal elsevier

    Polymer Journal Elsevier

    Polymer is an interdisciplinary journal dedicated to publishing innovative and significant advances in Polymer Physics, Chemistry and Technology. We welcome submissions on polymer hybrids, nanocomposites, characterisation and self-assembly. Polymer also publishes work on the technological application of polymers in Energy and optoelectronics.

  • everyday polymers lesson teachengineering

    Everyday Polymers Lesson TeachEngineering

    A polymer network consists of many polymer chains connected through a number of covalent linkages called cross-links. Most of the polymers we talk about here are linear polymers. A linear polymer is composed of one molecule after another, hooked together in a long chain called the backbone. Now, linear polymers do not have to be in a straight

  • polymers encyclopedia

    Polymers Encyclopedia

    Most synthetic polymers are made from the non-renewable resource, petroleum, and as such, the "age of plastics" is limited unless other ways are found to make them. Since most polymers have carbon atoms as the basis of their structure, in theory at least, there are numerous materials that could be used as starting points. But the research and

  • polymers and polymer composites: sage journals

    Polymers and Polymer Composites: SAGE Journals

    Most read articles in this journal in the last 6 months. Mechanical Properties of Glass Bead-Modified Polymer Composite Tsung-Han Hsieh, Ming-Yuan Shen,

  • polymer examples

    Polymer Examples

    Some polymers are rubbery, like bouncy ball, and some are hard and tough, like a skateboard. Most polymers are linear polymers. A linear polymer is made up of one molecule after another, hooked together in a long chain. This chain is called a backbone. Linear polymers do not have to be straight in length. The single bonds between atoms in the

  • explainer: what are polymers? science news for students

    Explainer: What are polymers? Science News for Students

    Polymers, whether natural or artificial, are big molecules made by linking up smaller repeating chemical units. The most common “backbones” for polymers are chains of carbon or silicon, each of which can bond to four other atoms.

  • polymer project

    Polymer Project

    Polymer Elements. Our original sets of web components, built with the Polymer library. Maintenance. About the Polymer Project As front-end engineers in the Chrome team, our mission is to make the web better. We work on libraries & tools. to help developers unlock the web’s full potential, taking advantage of cutting-edge features like Web Components, Service Workers and HTTP/2. We experiment

  • what are polymers & where do they come from mixer

    What Are Polymers & Where Do They Come From Mixer

    2019-06-26· Most chemists agree that a broad definition of polymers is a chemical composed of a series of repeating units. There are naturally occurring polymers like wool, silk, rubber, proteins, and pectin; artificial polymers such as artificial silk; and their closely related descendent synthetic polymers, which are things like nylon, polyester, Teflon

  • bio-based polymer an overview sciencedirect topics

    Bio-Based Polymer an overview ScienceDirect Topics

    The carbon content of such polymers is derived from the so-called short carbon cycle within an expected time frame between 1 to 10 years. Most industrial polymers and plastics are presently produced from fossil resources that are non-renewable as they cannot be

  • polymers classification, types, uses, properties

    Polymers Classification, Types, Uses, Properties

    These are man-made polymers. Plastic is the most common and widely used synthetic polymer. It is used in industries and various dairy products. For example, nylon-6, 6, polyether’s etc. Also Read: Natural Polymers vs Synthetic Polymers. Classification of Polymers

  • polymers and monomers materialsworldmodules.org

    Polymers and Monomers materialsworldmodules.org

    Polymer means many monomers. Sometimes polymers are also known as macromolecules or large-sized molecules. Usually, polymers are organic (but not necessarily). A monomer is a molecule that is able to bond in long chains. Here is a monomer: Here is a polymer: A polymer can be made up of thousands of monomer.

  • types of synthetic organic polymers introduction to

    Types of Synthetic Organic Polymers Introduction to

    The common PET bottles are made of a synthetic polymer, polyethylene terephthalate. The plastic kits and covers are mostly made of synthetic polymers like polythene, and tires are manufactured from Buna rubbers. Due to the environmental issues created by these synthetic polymers, which are often non-biodegradable and synthesized from petroleum

  • how plastics are made

    How Plastics Are Made

    The resulting thermoplastic polymers may be melted to form many different kinds of plastic products with application in many major markets.The variability of the plastic either within plastic family types or among family types permits a plastic to be tailored to a specific design and performance requirements. This is why certain plastics are

  • polymer testing journal elsevier

    Polymer Testing Journal Elsevier

    Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a

  • vinyl polymer an overview sciencedirect topics

    Vinyl Polymer an overview ScienceDirect Topics

    Vinyl polymers contain many pseudoasymmetric sites, and their properties are related to those of micromolecular compounds that contain more than one asymmetric carbon. Most polymers of this type are not optically active. The reason for this can be seen from structure 1-68.

  • polymer profiles: a guide to the world’s most widely

    Polymer Profiles: A Guide to the World’s Most Widely

    Polymer Profiles: A Guide to the World’s Most Widely Used Plastics By Carl D. Millholland 01.07.2016 Plastic is a leading material in the production and packaging of intermediate and finished goods.

  • what are the most useful polymers in our daily life? quora

    What are the most useful polymers in our daily life? Quora

    2017-04-07· Polymers are of two types :- 1. Natural Polymers The polymers that occur in nature. Our body is made up of many natural polymers like nucleic acids (DNA, RNA

  • polymer waterflooding petrowiki

    Polymer waterflooding PetroWiki

    The primary purpose of adding polymer to most polymer waterfloods is to increase the viscosity of the flood water; however, polymer addition to the flood water in many instances also imparts a secondary permeability-reduction component. Polymer waterflooding is normally applied when the waterflood mobility ratio is high or the heterogeneity of

  • hmc polymers asia's number one in pp

    HMC Polymers Asia's number ONE in PP

    View in Thai. The spirit of discovery that created the polyolefins industry and one of the most versatile and widely used families of plastics in the world polypropylene is alive at HMC Polymers and through our technology and joint-venture heritage.

  • everyday polymers lesson teachengineering

    Everyday Polymers Lesson TeachEngineering

    A polymer network consists of many polymer chains connected through a number of covalent linkages called cross-links. Most of the polymers we talk about here are linear polymers. A linear polymer is composed of one molecule after another, hooked together in a long chain called the backbone. Now, linear polymers do not have to be in a straight

  • what are the polymers of lipids? sciencing

    What Are the Polymers of Lipids? Sciencing

    2018-04-26· Lipids create a unique type of polymer, known for being a key component of cell membranes and hormones. Where most polymers are long chains of identical, repeating carbon-containing molecules known as monomers, lipid polymers contain an additional, nonidentical molecule attached to each monomer chain.

  • plastic the polymers britannica

    Plastic The polymers Britannica

    The most commonly specified mechanical properties of polymers include stiffness and breaking stress, quantified in the table of properties and applications as flexural modulus and tensile strength. Another important property is toughness, which is the energy absorbed by a polymer before failure—often as the result of a sudden impact. Repeated

  • why are most polymers considered to be non

    Why are most polymers considered to be non

    First, it is important to mention that not ALL polymers are non-biodegradable. That’s why I changed the question. There are polymers such as PLA, PGA, PEG and many others which are biodegradable. Not to mention natural examples, as polysaccharides...

  • polymer processing an overview sciencedirect topics

    Polymer Processing an overview ScienceDirect Topics

    Most polymer processing operations are governed by steady-state shear flow. The flow field in this case is independent of normal stresses and can thus be used to characterize the shear viscosity η of the material (e.g., Han, 1976),

  • vinyl polymer an overview sciencedirect topics

    Vinyl Polymer an overview ScienceDirect Topics

    Vinyl polymers contain many pseudoasymmetric sites, and their properties are related to those of micromolecular compounds that contain more than one asymmetric carbon. Most polymers of this type are not optically active. The reason for this can be seen from structure 1-68.

  • polymer blend an overview sciencedirect topics

    Polymer Blend an overview ScienceDirect Topics

    Polymer blends are utilized in various applications based on their properties. The most wide-ranging definition of a hybrid is a material that includes two moieties blended on the molecular scale. Commonly the term hybrids is more often used if the inorganic units are formed in situ by the sol–gel process. Meanwhile, use of the word

  • polymer examples

    Polymer Examples

    Some polymers are rubbery, like bouncy ball, and some are hard and tough, like a skateboard. Most polymers are linear polymers. A linear polymer is made up of one molecule after another, hooked together in a long chain. This chain is called a backbone. Linear polymers do not have to be straight in length. The single bonds between atoms in the

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