Natural-based plasticizers and biopolymer films: A review
The use of natural and/or biodegradable plasticizers, with low toxicity and good compatibility with several plastics, resins, rubber and elastomers in substitution of conventional plasticizers, such as phthalates and other synthetic conventional plasticizers attracted the market along with the increasing worldwide trend towards use of biopolymers.
GLYCERIN AS PLASTICIZER OF PAN - IGTPAN
Advantages of Glycerin in PAN plasticization: It is one of the most highly known polar substances after water. It has a boiling point above the melting temperature of PAN. Totally soluble in water, which facilitates its removal from the fibers. Low toxicity in relation to solvents used for PAN spinning. Totally biodegradable.
Interaction between Polyacrylonitrile (PAN) and Plasticizer
A composite fiber of polyacrylonitrile (PAN) and chitosan was obtained by spinning the mixture of PAN/chitosan with a certain amount of diluted acetic acid as a plasticizer. Water plasticizes the
The effect of glycerol concentration as a plasticizer on
Alginate was dissolved with 100 ml of distilled water. Alginate solution was heated on a hot plate up to 80 C with the stirring using a stirrer magnet assisted with a stirring rod. Then the stirring was done and during the heating at a temperature of 60 C, glycerol plasticizer was added.
Plasticizers: Types, Uses, Classification, Selection & Regulation
It is almost colorless and odorless oily liquid. It is very slightly soluble in water but soluble in alcohols, hexane etc. while miscible and compatible with all the monomeric plasticizers used in PVC compounding. Melting point: 43°C (45°F; 230 K) Boiling point: 244-252°C at 0.7 kPa.
- Can glycerin be used as a primary plasticizer?
- This innovative technology enables spinning by melting PAN polymer by using glycerin as the primary plasticizer, avoiding the use of highly toxic solvents. In the present work, PAN copolymer was copolymerized by conventional aqueous suspension. Its characterization was performed by FT-IR, GPC and DSC analysis.
- Can glycerin be used to extrude PAN fibers?
- Nowadays, the extrusion process of PAN fibers shows potential of cost reduction in relation to the wet spinning method. This innovative technology enables spinning by melting PAN polymer by using glycerin as the primary plasticizer, avoiding the use of highly toxic solvents.
- What are the advantages of using glycerin in Pan plasticization?
- Another great advantage of employing glycerin in PAN plasticization is because it is very soluble in water, it can be easily removed from the fibers by washing, restoring the fibers to the same composition as the original copolymer, as if they were produced by wet or dry spinning. This way these fibers are suitable for producing carbon fiber.
- Why is glycerol a nontoxic plasticizer?
- Glycerol is a by-product residue from biodiesel production and it is a nontoxic plasticizer. It improves spinnability, reducing the interaction between nitrile groups of the polymer chain, plasticizing the polymer and lowering its melting point, thereby enabling the melt spinning without significant degradation [10, 18 ].
- Can glycerol be used as a plasticizer for extrusion process?
- In the present work, a PAN- co-Styrene copolymer was formulated with 28%/mass of glycerol, which works as a plasticizer, for extrusion process.
- What is the melting temperature of Pan-co-styrene copolymer?
- For the determination of melting temperature (T m) of the PAN- co-Styrene copolymer, DSC analysis was carried out using a Shimadzu DSC-60 equipment model under synthetic air flow at a rate of 90 °C/min, from 50 °C up to 500 °C.
