Characterization and ageing study of poly(lactic acid) films plasticized with oligomeric lactic acid

Burgos, Nuria; Martino, Verónica P.; Jiménez, Alfonso

doi:10.1016/j.polymdegradstab.2012.11.009

Cited by 185 publications

(175 citation statements)

References 26 publications

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“…The statistical analysis for elongation at break " b is not reported since the model is not significant. The high values of elongation at break (>200%) at the highest content of OLA8 (20 wt%), are in agreement with the high miscibility of these additive with PLA [14,15]. …”

Section: Results and Discussion 31 Mechanical Propertiessupporting

confidence: 76%

“…Plasticizers such as poly (ethylene glycol) [13], oligomeric lactic acid [14,15], citrate esters [16] are frequently used to tune PLA mechanical properties increasing its ductility. In terms of thermal properties the addition of a plasticizer usually results in a strong increase in spherulitic growth rate with respect to pure PLA.…”

mentioning

confidence: 99%

“…Oligomeric poly(lactic acid)s are newly conceived plasticizers developed for the plasticization of PLA and biodegradable polymers obtained from biorenewable raw materials and fully biodegradable and bio disposable. When they are used in PLA they allow obtaining stretched films with excellent mechanical properties without loss of transparency [14,15]. However their effect combined with nucleating agents has never been studied.…”

mentioning

confidence: 99%

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Composition dependence of the synergistic effect of nucleating agent and plasticizer in poly(lactic acid): A Mixture Design study

Fehri¹,

Mugoni²,

Cinelli³

et al. 2016

Express Polym. Lett.

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Section: Results and Discussion 31 Mechanical Propertiessupporting

confidence: 76%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Composition dependence of the synergistic effect of nucleating agent and plasticizer in poly(lactic acid): A Mixture Design study

Fehri¹,

Mugoni²,

Cinelli³

et al. 2016

Express Polym. Lett.

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“…which can lead to tailored properties in terms of mechanical response, biodegradation rate, etc. Another interesting approach is the use of environmentally friendly and non-toxic plasticizers such as poly(ethylene glycol), PEG [16][17][18], poly(propylene glycol), PPG [19], oligomeric lactic acid, OLA [20], citrates such as acetyl tributyl citrate (ATBC) [21][22][23] or tributyl citrate (TBC) [22,[24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Plasticizing effect of biobased epoxidized fatty acid esters on mechanical and thermal properties of poly(lactic acid)

et al. 2016

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Poly(lactic acid)-PLA is a polyester that can be produced from lactic acid derived from renewable resources. This polymer offers attracting uses in packaging industry due to its biodegradability and high tensile strength. However, PLA is quite brittle, which limits its applications. To overcome this drawback, PLA was plasticized with epoxy-type plasticizer derived from a fatty acid, octyl epoxy stearate (OES) at different loading (1, 3, 5, 10, 15 and 20 phr). The addition of OES decreases the glass transition temperature and provides a remarkable increase in elongation at break and impact absorbed energy.Plasticizer saturation occurs at relatively low concentrations of about 5 phr OES; higher concentration leads to phase separation as observed by field emission scanning electron microscopy (FESEM). Optimum balanced mechanical properties are obtained at relatively low concentrations of OES (5 phr) thus indicating the usefulness of this material as environmentally friendly plasticizer for PLA industrial formulations.

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“…Generally, an efficient plasticizer has to reduce the glass transition temperature (T g ) and melting point of the plasticized materials [10] . Different types of plasticizers have been investigated to improve the flexible properties of PLA such as poly (ethylene glycol) (PEG), citrate esters [11][12][13][14][15] , oligomeric lactic acid [16] and triacetine [14,16] . There are several important considerations when choosing a plasticizer for PLA for biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Biobased additive plasticizing Polylactic acid (PLA)

et al. 2015

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SbstractPolylactic acid (PLA) is an attractive candidate for replacing petrochemical polymers because it is from renewable resources. In this study, a specific PLA 2002D was melt-mixed with two plasticizers: triethyl citrate (TEC) and acetyl tributyl citrate (ATBC). The plasticized PLA with various concentrations were analyzed by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), melt flow index (MFI), thermogravimetric analysis (TGA), X-ray diffraction (XRD), UV-Visible spectroscopy and plasticizer migration test. Differential scanning calorimetry demonstrated that the addition of TEC and ATBC resulted in a decrease in glass transition temperature (T g ), and the reduction was the largest with the plasticizer having the lowest molecular weight (TEC). Plasticizing effect was also shown by decrease in the dynamic storage modulus and viscosity of plasticized mixtures compared to the treated PLA. The TGA results indicated that ATBC and TEC promoted a decrease in thermal stability of the PLA. The X-ray diffraction showed that the PLA have not polymorphic crystalline transition. Analysis by UV-Visible spectroscopy showed that the two plasticizers: ATBC and TEC have no effect on the color change of the films. The weight loss plasticizer with heating time and at 100°C is lesser than at 135 °C. Migration of TEC and ATBC results in cracks and changed color of material. We have concluded that the higher molecular weight of citrate in the studied exhibited a greater plasticizing effect to the PLA.

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Characterization and ageing study of poly(lactic acid) films plasticized with oligomeric lactic acid

Cited by 185 publications

References 26 publications

Composition dependence of the synergistic effect of nucleating agent and plasticizer in poly(lactic acid): A Mixture Design study

Composition dependence of the synergistic effect of nucleating agent and plasticizer in poly(lactic acid): A Mixture Design study

Plasticizing effect of biobased epoxidized fatty acid esters on mechanical and thermal properties of poly(lactic acid)

Biobased additive plasticizing Polylactic acid (PLA)

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