Plasticizers: Types Uses Classification-Polymer Additives Kenya

  • Plasticizers: Types Uses Classification-Polymer Additives Kenya
  • Plasticizers: Types Uses Classification-Polymer Additives Kenya
  • Plasticizers: Types Uses Classification-Polymer Additives Kenya
  • What polymers use plasticizers?
  • Approximately 90% of these plasticizers are used in the production of plasticized or flexible polyvinyl chloride (PVC) products. Other polymer systems that use small amounts of plasticizers include polyvinyl butyral (PVB), acrylic polymers, poly (vinylidene chloride), nylon, polyolefins, polyurethanes, and certain fluoroplastics.
  • What are the different types of plasticizers used for polymer modification?
  • Several chemical families of plasticizers are used for polymer modification. Among them, the most common are: Phthalate Esters – Produced by esterification of phthalic anhydride or phthalic acid. Obtained by the oxidation of orthoxylene or naphthalene. Most commonly used phthalate plasticizers include: DEHP: Low molecular weight ortho-phthalate.
  • 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 classified?
  • Plasticizers are classified based on their chemical composition. It is important to understand the influence of structural elements on the properties of plasticizers and their effect on base polymers. For example, the presence of elements like alcohols in a homologous series of phthalates, and adipates.
  • How do Plasticizers improve the properties of a polymer?
  • They improve the following properties of the polymers: Plasticizers increase the flow and thermoplasticity of a polymer. This is done by decreasing the viscosity of the polymer melt, Tg, Tm, and elastic modulus of the finished product.
  • What is a primary plasticizer?
  • A primary plasticizer enhances elongation, softness and flexibility of polymer. 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.

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