Polymers | Free Full-Text | Plasticization Effect of Poly
Poly (butylene adipate– co –terephthalate) (PBAT) is another commonly known biodegradable polymer. It is derived from petroleum-based resources and exhibits high elongation at break and good ductility. Similarly to thermoplastic elastomers, it also displays low modulus of elasticity [ 21, 22 ].
Adipate and Citrate Esters as Plasticizers for Poly(Lactic
Adipate and citrate esters have been investigated as plasticizers for PLA [ 11 ]. Low molecular weight plasticizers, such as bis (2-ethylhexyl) adipate, glyceryl triacetate, and acetyl tributyl citrate, interacted well with PLA and improved crystallization rates and mechanical properties.
Adipate and Citrate Esters as Plasticizers for Poly
Poly (lactic acid) (PLA) and thermoplastic starch (TPS) sheets plasticized with different adipate and citrate esters were produced by a calendering-extrusion process. The incorporation of...
Development of biodegradable flexible films of starch and
The adipate and citrate esters plasticized the PLA and allowed homogenous pellets to be obtained for the production of films by blow extrusion. The obtained films had a yellow surface, were homogenous, had irregularities in some spots, and were slightly sticky due to excess glycerol. 3.2. Mechanical and optical properties
Preparation, Characterization and Properties of Poly(lactic
there are many low molecular weight plasticizers including citrate esters, dioctyl adipate, oligomeric lactic acid, glucos e monoesters and glycerol have been used to improve mechani-cal properties of PLA.16-20 These plasticizer can significantly lower the glass transition temperature, improve ductility and
- Can citrate esters be used as plasticizers with poly(lactic acid) (PLA)?
- Citrate esters were used as plasticizers with poly (lactic acid) (PLA). Films were extruded using a single-screw extruder with plasticizer contents of 10, 20, and 30% by weight. All of the citrate esters investigated were found to be effective in reducing the glass transition temperature and improving the elongation at break.
- Can glycerol be used as a plasticizer for biodegradable films?
- Biodegradable films were produced from blends contained a high amount of thermoplastic starch (TPS) and poly (lactic acid) (PLA) plasticized with different adipate or citrate esters. It was not possible to obtain pellets for the production of films using only glycerol as a plasticizer.
- Are citrate esters effective in reducing glass transition temperature?
- All of the citrate esters investigated were found to beeffective in reducing the glass transition temperature and improving the elongation at break. It was observed that the plasticizing efficiency was higher for the intermediate-molecular-weight plasticizers.
- Do citrates increase the enzymatic degradation rate of PLA?
- It was found that thelower-molecular-weight citrates increased the enzymatic degradation rate of PLA and the higher-molecular-weight citrates decreased the degradation rate as compared with that of unplasticized PLA. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 66: 1507–1513, 1997
- Is PLA a biodegradable polymer?
- PLA is an aliphatic, biodegradable, and hydrophobic polyester produced from the polymerization of lactic acid molecules and has properties comparable to those of plastics made from petroleum, such as transparency, good processability, and mechanical properties ( Garlotta, 2001, Martin and Averous, 2001 ).
