Selecting Plasticizers for Adhesives and Sealants
Plasticizers that are used in adhesive and sealant formulations are generally chosen on the basis of the following criteria: Compatibility with a given polymer or set of component ingredients. Compounding characteristics. Effect of plasticizer on the rheological properties of the polymer.
Plasticizers: Types, Uses, Classification, Selection & Regulation
Most commonly used phthalate plasticizers include: DEHP: Low molecular weight ortho-phthalate. Still the world’s most widely used PVC plasticizer DINP, DIDP: High molecular weight ortho-phthalates Aliphatic dibasic acid Esters – These include chemicals such as glutarates, adipates, azelates and sebacates.
Natural-based plasticizers and biopolymer films: A review
1. Introduction. Plasticizers are an important class of low molecular weight non-volatile compounds that are widely used in polymer industries as additives [1].The primary role of such substances is to improve the flexibility and processability of polymers by lowering the second order transition temperature, the glass transition temperature (T g).
Thermal stability of poly(2-ethylhexyl acrylates) used as
New area applications for polymeric plasticizers based on 2-ethylhexyl acrylate (2-EHA) are technical products where the thermal resistance plays the major role. The successful development of high performance acrylic polymers in form of copolymers and homopolymers used as PSA has been viewed as a classic example attesting to the importance of
Plasticizers in Paint & Coatings: Uses, Types and Selection
Good stability to heat and ultraviolet light Broad range of compatibility, and Excellent resistance to hydrolysis Di-iso-octyl phthalate (DIOP) DIOP is like DOP, an all-purpose plasticizer for polyvinyl chloride, polyvinyl acetate, rubbers, cellulose plastics, and polyurethane. Di-iso-nonyl phthalate (DINP) & Di-iso-decyl phthalate (DIDP)
- What makes a good plasticizer?
- Ideal plasticizers should be highly compatible with polymers, stable in both high and low temperature environments, sufficiently lubricating over a wide temperature range, insensitive to solar ultraviolet (UV) radiation, leaching and migration resistant, inexpensive and should fulfill health and safety regulations.
- Which plasticizer is better – low or high molecular weight?
- Poly (vinyl chloride), plasticized with low, medium, and high molecular weight plasticizers, is an excellent example of such behavior. Low molecular weight plasticizers are more efficient but suffer from impermanence. High molecular weight plasticizers have superior permanence and better physical and electrical properties, but are less efficient.
- How can plasticizers be used to make polymers soft and flexible?
- By adding plasticizers to compatible polymers, the materials can be modified in such a way that they become soft and flexible by decreasing their glass transition temperature. Plasticizers are classified according to their molecular structure into monomeric or polymeric types.
- Are polymeric plasticizers a good choice?
- They can be designed so that they are highly compatible with the host polymer, and leaching and volatility issues have been significantly improved over traditional plasticizers. However, polymeric plasticizers are usually expensive and have lower plasticizing efficiency than most traditional plasticizers.
- What are plasticizers & stabilizers?
- Plasticizers are one of the key materials which improve the characteristics of the final products such as flexibility, which would not be realized without it, to PVC and rubbers. PVC stabilizers are one of the essential materials for PVC to improve processability and characteristics of PVC products.
- What is the permanence of high molecular weight plasticizers?
- The permanence of high molecular weight plasticizers is such that the average molecular weight of the polymeric plasticizer is no longer a factor.
