A simple approach with scale-up potential towards
Plasticizer migration is responsible for premature coating failure in polyvinyl chloride (PVC) synthetic materials that continue to benefit our daily life as a reliable and cost-efficient...
A simple approach with scale-up potential towards
Chlorinated fatty acid methyl ester (CFAME) was synthesized by addition reaction between unsaturated FAME and chlorine gas. Briefly, dehydrated FAME (80 g) were introduced into a 250 mL three-necked flask, which was equipped with a thermometer, a magnetic stirrer and an absorbent for exhaust gas.
Y-Shaping All Components in Waste Cooking Oil-Derived
When combined with di-(2-ethylhexyl) phthalate (DOP) in PVC formulations, the chlorinated fatty acid methyl ester is qualified as a co-plasticizer while conferring flame retardancy upon the PVC
Methods for determination of plasticizer migration
Moreover, some practitioners refer to incubate the specimen sandwich as prepared at 0 °C, instead of 70 ± 2 °C. This variation is carried out in that some plasticizers (e.g., epoxidized fatty acid methyl esters) tend to condensate upon cooling, and thus exudate much faster from PVC matrix than at high temperatures.
Conversion of fatty acid methyl ester to epoxy plasticizer by
Then, the epoxidation of obtained fatty acid isobutyl esters (FABEs) was conducted in the presence of formic acid and hydrogen peroxide. The Ep-FABEs was further analyzed for its plasticizing effectiveness to replace dioctyl phthalate (DOP) and compared with conventional epoxy plasticizer epoxidized fatty acid methyl esters (Ep-FAMEs).
- Who supplies fatty acid methyl ester and epoxidized fatty acids?
- Unsaturated fatty acid methyl ester (FAME, iodine value = 62 gI2/100 g) and epoxidized fatty acid methyl es- ters (EFAME, epoxy value = ca. 5.8%) were supplied by Jingu Plasticizer Co., Ltd. (Shijiazhuang, China). Chlor- ine gas (Cl2, 99.8%) was purchased from Keyuan Gas Co., Ltd. (Chengdu, China).
- What is chlorine fatty acid methyl ester (cfame)?
- Chlorinated fatty acid methyl ester (CFAME) was synthe- sized by addition reaction between unsaturated FAME and chlorine gas. Briefly, dehydrated FAME (80 g) were in- troduced into a 250 mL three-necked flask, which was equipped with a thermometer, a magnetic stirrer and an absorbent for exhaust gas.
- Can methyl ester be used as a co-plasticizer in PVC coatings?
- When combined with di-(2-ethylhexyl) phthalate (DOP) in PVC formulations, the chlorinated fatty acid methyl ester is qualified as a co-plasticizer while conferring flame retardancy upon the PVC coatings.
- Does plasticizer affect water vapor permeability of cassava starch films?
- Films without plasticizer adsorbed less water and showed higher water vapor permeability, indicating the antiplasticizing effect. Other study also investigated the effect of sucrose or inverted sugar addition on mechanical properties, hydrophilicity and water activity of cassava starch films was studied .
- Does plasticizer type affect the equilibrium moisture content of films?
- Plasticizer type did not significantly affect the equilibrium moisture content of films. Sucrose added films were the most fragile at low RH, while GLY films were the most hygroscopic. However, at RH of 76–90%, sucrose films showed similar resistance compared to other plasticized films.
- How does fatty acid separation affect Zein aggregation?
- Fatty acid separation caused zein aggregation, resulting in loss of flexibility and increased water absorption. Linoleic acid was more effective than oleic acid at reducing water absorption of sheets.
