Plasticizer - an overview | ScienceDirect Topics
A plasticizer that is compatible with PVC and exhibits low volatility, good permanence, and high efficiency is referred to as a primary plasticizer. A secondary plasticizer has the opposite characteristics of a primary plasticizer. The amount of plasticizer needed to obtain a certain hardness or elongation is a measure of its efficiency.
Natural-based plasticizers and biopolymer films: A review
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). The council of the IUPAC (International Union of Pure and Applied Chemistry) defined a plasticizer as “a substance or material incorporated in a material
Title: A Review on Plasticizers and Eco-Friendly
Bioplasticizers are derived mainly from biomass sources including agricultural products, it’s by-products and waste. Regardless of the biomass source, ideal bioplasticizers are expected to be
Polymers | Free Full-Text | Plasticizers Derived from Biomass
Ester-amide of ricinoleic acid, as shown in Figure 22, is synthesized and used as primary plasticizer to replace phthalate plasticizers in PVC materials [ 105 ]. Tg of PVC materials blended with 40 wt % of ester-amide of ricinoleic acid reaches 13.5 °C. Figure 22. Synthesis of ester-amide of ricinoleic acid.
Primary plasticizer | Article about primary plasticizer by
primary plasticizer [ ′prīmer·ē ′plas·tsīz·r] (materials) A plasticizer material for plastics formulations that has sufficient affinity to a polymer or resin so that it is considered compatible and therefore may be used as the sole plasticizer.
- Are secondary plasticizers compatible with polymers?
- Since the primary plasticizers can quickly gel the polymer and have solubilities close to those for the polymer, they rarely leach out of the plasticized material. The secondary plasticizers group’s compatibility with polymers is generally quite limited.
- What is a plasticizer?
- In general, plasticizers can be defined as low molecular weight (between 300 and 600) , high boiling point materials which are added to a film-forming polymer to enhance its flexibility, durability, processability, and workability . Their addition can avoid shrinking during storage , and in some cases reduce costs .
- Why are plasticizers added to ca?
- Plasticizers are added to CA to increase workability, prevent degradation under processing conditions and ensure thermo-mechanical properties suitable for the intended final application. Moreover, inexpensive and non-toxic solvents enable its processing into fibers, films, and solid blocks.
- Which polymers are plasticized?
- The plasticizers produced have been applied in 60 polymers and more than 30 groups of products. Industrially, the most common plasticized polymers are PVC, poly (vinyl butyral) (PVB), poly (vinyl acetate) (PVAc), acrylics, cellulose molding compounds, nylon, polyamides and certain copolyamides.
- Why do polymers have plasticizers?
- Their addition can avoid shrinking during storage , and in some cases reduce costs . Additionally, the incorporation of plasticizers into the polymer can affect some physical properties of the polymer such as the viscosity, degree of crystallinity, glass transition temperature (T g ), hardness, and density [15,35]. ...
- Why does plasticization occur?
- Indeed, plasticization occurs because of the ability of plasticizer molecules to create secondary bonds with polymer and to replace chain interactions by plasticizer-polymer bonds . Based on these considerations, plasticizers with low molecular weight and a few polar groups provide higher flexibility and plasticization.
