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Chemistry formula & Reactions for class 12 chapter- Polymers

Chemistry Formulas

Class 12 chapter- Polymers

  • Polymers : A polymer is a large but single chain like molecule in which the repeating units are derived from small molecules called monomers, are covalently linked. They have high molecular weight.
  • Condensation Polymers: In this type of polymers, the monomers react together with the elimination of a simple molecules like H2O, ROH or NH3 etc. The reaction is called condensation and the product formed is called condensation polymer.
  • Polyesters : These are polymer having large number of ester linkages e.g.,

(i) Terelene : It is resistant to action of chemical and solvent. It has a low moisture aborbing power. It is also called dacron. It is the polymer of ethylene glycol and terephthalic acid. It is used as a blend with cotton and wool to give terycot and terywool.

terelene

(ii) Glyptal or Alkyl resin : Glyptal is a general name of all polymers obtained by condensation of di-basic acids, and polyhydric alcohols. The simplest glyptal is poly (ethylene glycol phthalate) which is obtained by the condensation of ethylene glycol and phthalic acid.

glyptal reaction

  • Those polymers which have large number of amide linkages are called polyamides, e.g.,

(i) Nylon-66: It can be cast into sheets or fibres. Nylon fibres have high tensile strength. They are touch and resistance to abrasion. They are also elastic in nature, It is used to make bristles of toothbrush, climbing ropes, fishing nets and parachute fabrics. It a condensation polymer of adipic acid and hexamethylenediamine.

nylon

Chemistry formula sheet for chapter-Polymers is prepared by expert of Physics Wallah and consist of all-important formula use in Polymers chapter. Do find the detail NCERT solutions for class 12 chemistry prepared by expert faculty of Physics Wallah. 

Download free pdf sheet which consist of formulas and important points of Polymers from the link given below

Chemistry formula & Reactions for class 12 chapter- Polymers

Chemistry formula & Reactions for class 12 chapter- Polymers

Chemistry formula & Reactions for class 12 chapter- Polymers

Chemistry formula & Reactions for class 12 chapter- Polymers

Chemistry formula & Reactions for class 12 chapter- Polymers

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