Effect of Modified Cardanol as Secondary Plasticizer on
act as an epoxy curing agent and as a plasticizer.2631 The use of cardanol as the primary or secondary plasticizer can enhance the exibility and thermal stability and decrease the volatility of PVC materials.3235 It has also been suggested that some renewable plasticizers have good leaching resistance, plasti-
Secondary Plasticizers | Galata chemicals
Drapex Secondary Plasticizers Epoxidized compounds for a wide range of applications Focusing our efforts on delivering greener and more sustainable solutions, the DRAPEX plasticizers are manufactured from renewable feedstock and effectively serve as both secondary plasticizers and co-stabilizers in nearly all PVC systems.
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.
Plasticizers: Types, Uses, Classification, Selection & Regulation
Secondary plasticizers may have limited compatibility with the polymer and/or high volatility. They may or may not contain functional groups which allow them to solvate the polymer at processing temperatures. Secondary plasticizers are variously used for: Cost reduction Viscosity reduction Solvency enhancement Surface lubricity augmentation, and
Ionic liquids: New generation stable plasticizers for poly
Fig. 1. Structures of ILs and traditional plasticizers. The effectiveness of these ILs and traditional plasticizers were studied in terms of flexibility, mechanical properties, and high temperature and UV stability they impart to PVC as plasticizers. The leaching and migration tendencies of these plasticizers were also investigated.
- 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.
- Is Sohe a good secondary plasticizer?
- Accordingly, a synergistic effect could be easily seen when a mixture of plasticizers was added, making SOHE a promising secondary plasticizer. As expected, the extraction and volatility resistance in blends with SOHE was improved due to the high molecular weight of the studied plasticizer.
- How do plasticizers affect polymers?
- Plasticizers are substances which, by virtue of their polar or polarizable structure, weaken the secondary valence forces of polymers. 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.
- 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.
- How do plasticizers work in a polymer matrix?
- Inside the polymer matrix, plasticizers act by breaking up the primary bonds holding the polymer chains together and forming secondary polymer–plasticizer bonds, and thus rendering mobility to polymer chains or chain segments.
- Can a low molecular weight plasticizer be used as a secondary plasticizer?
- Noteworthy research focused on the introduction of a low molecular weight plasticizer as a secondary plasticizer and was carried out by Matos et al. DEHT was partially (5, 10, 15, 20 phr) replaced by di (ethylhexyl)-2,5-furandicarboxylate (DEHF) in PVC plastics (with whole plasticizer content of 55 phr).
