Polymers chapter
WebPolymer is a term composed of two words i.e poly which means many and mer which means unit. Thus polymer is a bigger molecule made up of various smaller molecules, therefore polymers are also known as macromolecules. Some examples of polymers or macromolecules are polyethene, DNA, protein, Nylon 6,6, etc. The process of formation of … WebThe purpose of the present chapter is to review the contribution of X-ray diffraction studies to the elucidation of the structure of glassy amorphous polymers. The general theory of X-ray diffraction by matter has been treated in many texts and an up-to-date account is that of Warren 1 which has sections dealing with the application of X-ray ...
Polymers chapter
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WebPolymer is a term composed of two words i.e poly which means many and mer which means unit. Thus polymer is a bigger molecule made up of various smaller molecules, … WebPolymers. The word “Polymer” is derived from two Greek words, ‘Poly’ that means many (numerous) and ‘Mer’ which means units. In basic terms, a polymer is a long-chain molecule that is composed of a large number of repeating units of identical structure. These identical structures, we understand as a unit made up of two or more molecules, join together to …
WebJul 20, 1998 · polymer, any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, that are multiples of simpler chemical units … WebMany of the useful properties of polymers are in fact unique to polymers and are due to their long chain molecular structure. These issues will be discussed at length in the next chapter. In this chapter, focus will be on general characteristics, applications and an introduction to the mechanical behavior including elementary concepts of their inherent time dependent …
WebJan 9, 2016 · 1. Polymers Class 12. 2. Classifications of polymers • Polymers are made up of large no of macromolecules. • The single unit of a polymeric chain is called a monomer. • This process of formation of polymers from respective monomers is called polymerisation. 3. Classification of polymers • 1. WebPolymers – in One-Shot (Full Chapter) Class 12 Polymers Important Questions with Answers Short Answer Type. Q1. A natural linear polymer of 2-methyl-1,3-butadiene becomes hard …
WebThe polymer used in making hair synthetic hair wigs is mage up of. CH 2 =CHCl; CH 2 =CHCOOCH 3; C 6 H 5 CH=CH 2; CH 2 =CH-CH=CH 2; Answer: (a) 6. Which of the following monomers form biodegradable polymers? 3-hydroxybutanoic acid + 3-hydroxypentanoic acid; Glycine + amino caproic acid; ethylene glycol + phthalic acid; both a and b; Answer: …
WebThe process of making a polymer is called polymerization. A polymer is an example of a macromolecule, the name given to a large molecule. Simple polymers are named after their monomers; the ethylene polymer is formally called poly (ethylene), although in common use, the names are used without parentheses: polyethylene. can curd be eaten at nightWebApr 12, 2024 · Linear Polymers - These are the polymers made up of straight and long chains. Examples are polyvinyl chloride, high-density polythene. Branched Chain Polymers - These polymers contain the linear chains with some branches. An example is a low-density polythene. Network or Cross-linked Polymers - This type of Polymer is formed from the bi … can curcumin help with weight lossWebJul 5, 2014 · Summary. In nanotechnology, polymers play a very important role as one of most often employed materials, especially in the fields of nanofibers and nanocomposites. Hundreds of polymers, including natural and synthetic polymers, have been fabricated into nanofibers and nanocomposites in the past 20 years. Thus a fundamental understanding … fish move rubik\u0027s cube patternWebChapter 14 -39 39 f Polymer Types – Fibers Fibers - length/diameter >100 • Primary use is in textiles. • Fiber characteristics: – high tensile strengths – high degrees of crystallinity – structures containing polar groups • … can cure crohn\u0027s in star homeopathyWebDec 1, 2024 · Most polymers are derived from petroleum hydrocarbon sources and hence are extremely flammable. However, for any material to catch fire, oxygen, heat, and external energy are essential. During combustion, polymer particles become airborne; when a polymer is exposed to high heat energy, a significant amount of degradation occurs. fish movie big lipsWebDescription. Polymers selected for this edition of the Handbook of Polymers include all major polymeric materials used by the plastics and other branches of the chemical … can cured zombie villagers breedWebPolymers Chemistry Practice questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions … fish movers