Plasticizers in Paint & Coatings: Uses, Types and Selection
DOP or DnOP is light-colored, low volatility & odorless liquid. It was the most commonly used all-purpose plasticizer, although mainly used for polyvinyl chloride (PVC) resins. It is insoluble in water & has a low viscosity of 56 mPa.s at 25°C. DOP features: Good stability to heat and ultraviolet light; Broad range of compatibility, and
Plasticizer - an overview | ScienceDirect Topics
Good plasticization involves interspersing plasticizer molecules between PVC chains, breaking the small amount of native PVC crystallinity, and internally lubricating the polymer blend. While there is no formal chemical bond between plasticizer and polymer, the polar attraction between them makes plasticized PVC more than a simple physical mixture.
The Effect of Different Plasticizers on the Characteristics
The edible film is a protective coating that could be directly applied to food products. This research aims to observe the physical characteristics of whey composite edible film with different plasticizer addition (glycerol, sorbitol, polyethylene glycol).
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- How stable is unplasticized PVC?
- Unplasticized PVC was stable up to 212 °C, whereas the addition of plasticizers deteriorated its thermal stability to some extent for every plasticizer studied. Table 3 offers a comparison of the PVC samples where the temperatures at which samples lost 10% of their initial weights have been reported.
- Do plasticizers deteriorate the thermal stability of plasticized PVC?
- When plasticized samples were subjected to the same temperature ramp, dramatic differences were observed compared to the above results for the plasticizers alone. Unplasticized PVC was stable up to 212 °C, whereas the addition of plasticizers deteriorated its thermal stability to some extent for every plasticizer studied.
- Which plasticizer withstands leaching?
- From leaching point of view, the best plasticizers are those that do not leave the polymer. Thus, plasticizers at the left end, e.g., Citroflex A6 and Citroflex B6 are good plasticizers, and so is [thtdPh + ] [Tf 2 N − ]. A second consideration for good plasticization that withstands leaching is whether the modulus changes much after the leaching.
- Which plasticizer has a good plasticizing efficiency?
- Both plasticizers provided a satisfactory plasticizing efficiency, such as DEP, due to their low viscosity and ease of diffusion into CA, which enables a large processing window and increases the material's flexibility. CA with 30 wt% GTA displayed a slightly higher elastic modulus than CA with 30 wt% GDA (E = 2.1 GPa and 1.9 GPa, respectively).
- Why do IL-Plasticized PVC samples have poor thermal stability?
- This leads to the conclusion that rather than due to a particular anion or cation, the poor thermal stability of IL-plasticized PVC samples may have been due to the IL taking part in the catalytic degradation of PVC, similar to the well-known autocatalytic degradation of PVC by HCl given off as PVC degrades .
- Can plasticizers reduce material degradation over time?
- The design of new plasticizers compatible with the polymer at high concentrations, tailored to be effective in lowering the glass transition temperature, and with a low tendency to migration could considerably reduce material degradation over time.
