How to Select the Right Plasticizer for Polymers Yemen

  • How to Select the Right Plasticizer for Polymers Yemen
  • How to Select the Right Plasticizer for Polymers Yemen
  • How to Select the Right Plasticizer for Polymers Yemen
  • How do you plasticize a polymer?
  • A polymer can be internally plasticized by chemically modifying the polymer or monomer. This increases flexibility. It involves copolymerization of the monomers of the desired polymer (having high Tg) and that of the plasticizer (having low Tg) so that the plasticizer is an integral part of the polymer chain.
  • What are primary and secondary plasticizers?
  • Primary and secondary plasticizers are terms related to compatibility with polymers (compatibility is discussed later). Primary plasticizers enter the polymer systems first. Plasticizers entering the crystalline regions of crystalline or semi- crystalline polymers are referred to as primary.
  • Which type of plasticizer enters the polymer system first?
  • Primary plasticizers enter the polymer systems first. Plasticizers entering the crystalline regions of crystalline or semi- crystalline polymers are referred to as primary. If the amorphous regions of those polymers are penetrated, the plasticizer may be considered a solvent type.
  • How to choose an ester plasticizer?
  • The rubber compounder must evaluate ester plasticizers for compatibility, processability, permanence and performance properties. The study of these properties by the rubber compounder will help in selecting an ester plasticizer. ASTM D883, "Plastics Nomenclature," American Society for Testing and Materials, Philadelphia, PA.
  • Are plasticizers compatible with polymers?
  • They are highly compatible with polymers and can be added in large quantities. For example: up to 50% of vinyl gloves are made up of plasticizers, which make the PVC flexible and soft enough to wear. A secondary plasticizer is one that typically cannot be used as the sole plasticizer in a plasticized polymer.
  • How are plasticizers selected?
  • As mentioned earlier, plasticizers are selected based on their processing and end-product property contributions. Plasticizer/elastomer compatibility is the major determining factor relative to processing. End-product properties are the other major factors involved in plasticizer choice.

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