Nobody downloaded yet

Elasticity of rubber - Assignment Example

Comments (0) Cite this document
Name: Professor: Course: Date: Elasticity of Rubber Introduction and background A natural rubber is attained by means of coagulating latex from a type of tree known as Hevea Brasiliensis. It is predominantly composed of cis-1, 4-polyisoprene. Solidified natural rubber discerned in 1924 in Germany dates back to about fifty million years ago…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER98.4% of users find it useful
Elasticity of rubber
Read TextPreview

Extract of sample
"Elasticity of rubber"

Download file to see previous pages Rubber substances are not confined to natural rubber, however. They take account of a great variety of synthetic polymers of comparable properties. An elastomer is considered as a polymer that shows evidence of rubber elastic properties, i.e. materials that can be possibly stretched to a number of times its original length without breaking and which, upon release of the stress, instantaneously returns to their original lengths. A rubber is more or less an elastic material, since its deformation is instantaneous and it further shows almost no slither (Bjork, 1988). The distinctive nature of rubbers was ascertained by John Gough in 1305, and described his findings and experiments as shown in this subsequent paragraph. A person has to clasp one end of the slip of a rubber between the thumb and forefinger of each hand; get the central point of the piece into slight contact with the lips; further lengthen the slip swiftly; and you will instantly make out a feeling of warmth in that section of the mouth that is in contact with stretched rubber. For this resin evidently grows warmer the further it is lengthened; and the edges of the lips possess a higher degree of sensibility, which facilitates them to discover these changes with greater facility than other parts of the body. The augment in temperatures, which is recognized in the event of extending any pieces of Caoutchouc, may be obliterated in on the spot, by allowing the slip to contract again; which it will do quickly by desirable quality of its own spring, as soft as the stretching forces cease to act as soon as it has been fully exerted. Gough made these comments regarding his second experiment: In any case one end of a slip of Caoutchouc is fastened to a rod of wood or metal, and some weight is fixed (added) at the other extremity/end; the thong will be seen to become longer with cold and shorter with heat (Mark, 1984). To make certain this concept, it is necessary for a self experimentation. One will only need a strip of rubber, a weight and a hair-dryer. Gough presented no better explanations to the unexpected findings, such as that the expected stiffness increments with rising temperatures and that heat is progressive throughout stretching duration. It took approximately fifty years prior to the formulation of thermodynamics of the rubber elasticity. Rubbers exhibit predominantly entropy-driven elasticity through measurements of force and specimen length at varied temperature levels. Thermo-elastic effects of rubber shows that stretched rubber samples which are subjected to constant uniaxial load contract reversibly on heating, and the same sample can give out heat reversibly if stretched. These two observable concepts are true and consistent with the view that the entropy of the rubber decreased on stretching. Molecular picture of the entropic forces is dated back to the theoretical work of 1930’s, when it was suggested that the covalently bonded polymer chains had been oriented during extension (Gumbrell, Rivlin, &, Mullins, 1953, p. 1495). Methods and procedures This study involved an investigation in the thermo-elastic behaviors and thermodynamics, with regards to the energetic and entropic elastic forces. At minimum strains, characteristically less than ? = L L 0 < 1.1 (where L and L0 are the dimensions of the unstressed and stressed specimens, respectively), the stress at ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Elasticity of rubber Assignment Example | Topics and Well Written Essays - 1500 words”, n.d.)
Elasticity of rubber Assignment Example | Topics and Well Written Essays - 1500 words. Retrieved from
(Elasticity of Rubber Assignment Example | Topics and Well Written Essays - 1500 Words)
Elasticity of Rubber Assignment Example | Topics and Well Written Essays - 1500 Words.
“Elasticity of Rubber Assignment Example | Topics and Well Written Essays - 1500 Words”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
Automotive component
In order for the automobile to run smoothly, these parts must be checked one by one and connected intact to form the machine as a whole. One of the most vital parts of the automobile is the molded tire. Compression molded tires make the automobile move from one place to another.
6 Pages(1500 words)Assignment
The importance of rubber can be well understood when we think about the above fact. Moreover it is used for making footwear, belting, hoses, tubing, insulators and sports items like other useful
3 Pages(750 words)Research Paper
Synthetic Rubber
The reactions of monomers may occur by the absorption of heat or light, or through addition of an initiator. The initiator I (a weak organic compound decomposes to produce unpaired electron containing free radicals) is added to a monomer molecule. E.g. Synthetic rubber is also formed during the polymerisation of certain monomers or by co-polymerisation of two different monomers.
6 Pages(1500 words)Lab Report
Demand and Elasticity in Health Care
This is because the co-efficient of -0.1 stands for a 10% decrease in the total quantity that has been demanded and associated with a 100% price increment (Dewar, 2010). Generally, it is a
4 Pages(1000 words)Assignment
Compression Molded Tires
According to the report an automobile is composed of various parts both seen and unseen. The complexities embedded within the structure require every part to be present so as to perform the function of the whole machine. One of the most vital parts in an automobile is the tires. Compression molded tires are significant parts of the automobile.
6 Pages(1500 words)Assignment
Determinants of Elasticity
At the same time, this trend compels people, to limit their spending on other luxuries in order to, cope with the appreciating value of necessities. As a result, demand of
1 Pages(250 words)Assignment
Car belt design
In order to replace the nylon or PVC material in the car belts, there is a need to focus on the alternatives. Poly lactic acid (PLA) belts can easily replace the currently used nylon material that is
4 Pages(1000 words)Assignment
PHY100 Writing Assignment 1
bber band is able to stretch because its molecules are tangled together in unstretched state thus elasticity occurs because the molecules curl up when released. Since a rubber band is made up of many polymer chains, when in relaxed state, the molecules have significant freedom
1 Pages(250 words)Assignment
Elasticity of Demand
Coffee and tea are examples of positive cross price elasticity of demand. The value of elasticity of demand normally differs along a demand curve. On a demand curve for coffee, cross
1 Pages(250 words)Assignment
Loaded Spring Oscillator, Hooke's Law
The phenomenon of simple harmonic motion is described by the motion of mass on a spring subjected to the linear elastic restoring force in accordance to Hook’s Law. It demonstrates a single resonant frequency and is sinusoidal in time. Through Fourier analysis technique the motion provides a basis for characterization of more complicated motions.
4 Pages(1000 words)Assignment
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Assignment on topic Elasticity of rubber for FREE!
logo footer
Contact us:
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us