Plasticizers in Paint & Coatings: Uses, Types and Selection
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) DINP & DIDP are low-cost plasticizers that have been widely used in coating formulations.
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Eastman Cellulose Acetate CA-398-30 is a high-viscosity, high molecular weight cellulose acetate supplied as fine, dry, free-flowing powder. Its relatively uniform particle size permits good plasticizer distribution during blending and it offers good physical properties for molded and extruded articles.
Miscibility and dynamical properties of cellulose acetate
In the literature, Seymour et al., 1979 focused on various cellulose ester/plasticizer systems studied by DMTA and dielectric measurements. They argued that the secondary relaxation of polymer-plasticizer systems is due to a specific type of polymer–plasticizer interaction, which is denoted as “β’ relaxation”.
Study on Cellulose Acetate Butyrate/Plasticizer Systems by
CAB and plasticizer were mixed at the mass ratio of 2:3. For a typical procedure, 2.00 g CAB was dissolved in 20 mL ethyl acetate in a 50 mL flask by magnetic stirring, and 3.00 g plasticizer was then added into the flask and mixed well with CAB solution.
Thermal Properties of Plasticized Cellulose Acetate and Its β
Furthermore, cellulose acetate with Δ C p CA = 0.233 J g 1 K 1 exhibited a very low heat capacity change in comparison to the plasticizers GTA (Δ C p GTA = 0.777 J g 1 K 1) and TEC (Δ C p TEC = 0.890 J g 1 K 1), as shown in Figure 2. With the addition of plasticizer, no crystallization of CA was observed.
- Can cellulose acetate be used as a plasticizer?
- Due to their high glass transition temperature, cellulose acetate-based systems are processed when blended with plasticizers. It is thus of utmost importance to study the miscibility and plasticizing effects of various molecules. We prepared CDA films via solvent casting method with diethyl phthalate as the plasticizer.
- What is plasticized cellulose acetate (CA)?
- Plasticized cellulose acetate (CA) is one of the most applied bio-based polymers due to its structural properties and easy processing. Plasticizers are added to CA to increase workability, prevent degradation under processing conditions and ensure thermo-mechanical properties suitable for the intended final application.
- Are plasticized cellulose acetate systems dielectric?
- Most of these dielectric studies, however, have been focused on cellulose and its derivatives, and only few results have been reported about dielectric properties of plasticized cellulose acetate systems. Seymour et al., 1979 focused on phthalate plasticizers such as dioctyl phthalate and diphenyl phthalate.
- Do plasticizers migrate out of cellulose acetate?
- Moreover, plasticizers that migrate out of the material could harm human health and contaminate the environment , . In this regard, understanding the mechanisms of CA plasticization is crucial to find room for improvement in tailoring cellulose acetate properties with a well-designed plasticizer molecule.
- Which polar plasticizer is suitable for cellulose acetate?
- A polar plasticizer with a proton-acceptor character, such as an ester, is useful in polymers with average polarities , e.g., cellulose acetate. Apart from the chemistry of the selected plasticizer, other factors influence compatibility.
- Is secondary cellulose acetate plasticized by diethyl phthalate miscible?
- We study the miscibility and dynamical properties of secondary cellulose acetate plasticized by diethyl phthalate (DEP). Partial miscibility (characterized by differential scanning calorimetry) is observed above 25 wt% of DEP content. The α-relaxation of the system and its VFT/WLF behavior are studied over a broad frequency range.
