Blends of low molecular weight of poly lactic acid (PLA) with gondorukem (gum rosin)

Kaavessina, Mujtahid; Distantina, Sperisa; Chafidz, Achmad; Utama, Aditya; Anggraeni, Venisa Mega Puteri

doi:10.1063/1.5024065

Cited by 6 publications

(7 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[22,33 Kaavessina et al have formerly reported the plasticizing effect of gum rosin into PLA matrix when added in lower contents. [34] Therefore, above 5 phr contents the saturation effect is possible. We could probably talk about a plasticizing effect in the exclusive case of PLA with 5 phr PEGR, where remarkable decrease in the tensile modulus down to 1,495 MPa (percentage decrease of 27%) (Figure 7b) as well as a slightly increase in the elongation at break up to 7.9% (Figure 6c) is observed, both compared with the tensile strength and elongation at break values obtained for neat PLA (2060 MPa) and (5.9%), respectively.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…[33] Kaavessina et al used GR as a plasticizer of PLA in a content of 5, 10, and 20%; they only analyzed the rheological properties that determined the plasticizing effect by reducing the complex viscosity and improving the biodegradability of the mixtures. [34] In this context, the aim of this work was to evaluate the changes occurred in melt flow index, wettability, thermal and mechanical properties of poly (lactic acid) after its melt-compounding with GR and GR derivative (pentaerythritol ester of gum rosin) in different contents, using different techniques like tensile, flexural, and dynamic mechanical analysis (DMTA), among other techniques, considering the difference between both resins.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modification of poly (lactic acid) through the incorporation of gum rosin and gum rosin derivative: Mechanical performance and hydrophobicity

Rosa-Ramírez

Aldás

López‐Martínez

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

The modification of PLA by melt compound with gum rosin (GR) and pentaerythritol ester of GR (PEGR) was investigated by studying the mechanical and thermal performance, blends morphology, wettability, and water absorption. Standard testing specimens for characterization were made at a variate resin content of 5, 10, and 15 part per hundred resin (phr) and manufactured by injection molding. It was found that GR and PEGR had a lubricating effect in PLA polymeric chains, resulting in a remarkable increase of 790 and 193% in melt flow index with only 5 phr GR and PEGR contents, respectively. A significant change in more than 10° of increasing water contact angle was observed for PLA with 15 phr PEGR. Thermogravimetric analysis reveals that PEGR led to delayed PLA degradation/decomposition process to higher temperature, increasing the onset temperature (T5%) in more than 7°C for PLA with 15 phr PEGR.

show abstract

Section: Mechanical Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modification of poly (lactic acid) through the incorporation of gum rosin and gum rosin derivative: Mechanical performance and hydrophobicity

Rosa-Ramírez

Aldás

López‐Martínez

2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…In contrast, a similar behavior was reported in a previous study where the in uence of rosin resin in the PLA matrix was evaluated. As a result, they explain that the increase in viscosity may be ascribed to a mobility change in the PLA chains [45]. Due to the in ection point observed in the formulation PLA (6201D)-UP(3phr), around 210°C, it is important to note that from the perspective of material processing and functionality, the most crucial range is the low-temperature range, since at high temperatures there is a risk of degradation of the material and changes in its properties and structure.…”

Section: Dynamic Rheological Analysismentioning

confidence: 99%

Influence of phenolic free modified rosin resin on the thermomechanical behavior of poly (lactic acid) having different crystallinities and molecular weights

Rosa-Ramírez,

Aldas,

Pavon

et al. 2024

Preprint

View full text Add to dashboard Cite

The influence of a highly complex modified commercial rosin resin (Unik Print, UP) on the thermomechanical performance of four commercial grades of polylactic acid (PLA) has been evaluated and compared. Comparative experiments were carried out with polylactides of different molecular weights and phase structures. The melt-extruded formulations were prepared by considering 3 parts per hundred resins (phr) of modified rosin resin, which was previously verified to be the suitable amount of UP resin effective to enhance PLA performance. Several analytical characterization techniques were used for comparison purposes. Among them, the thermogravimetric analysis allowed to determine that UP resin does not influence PLA's thermal decomposition behavior, regardless of PLA molecular weight and crystallinity degree. Differential Scanning Calorimetric (DSC) evaluation showed that UP resin eliminated both exothermal and endothermic peaks of amorphous PLA. At the same time, it was proved that the formation and growth of different types of crystal can be promoted in semi-crystalline PLA. Moreover, a toughness improvement was observed in all formulations. Besides, the rotational rheometer allowed to measure the viscosity of the final materials, finding that in amorphous PLA with low molecular weight, the UP resin did not cause apparent changes. However, the complex viscosity was increased for both semi-crystalline PLA (low and high molecular weight).

show abstract

“…20 Rosin blended with polylactic acid (PLA) have been reported to have successfully antibacterial properties. 21 The blending of PLA with gum rosin and ester of gum rosin was recently investigated 22,23 showing that they also have a lubricating effect. In order to get further insight for the processing aid of terpenes on PHB, additional data are required about the thermal behavior and crystallinity of the blend.…”

Section: Introductionmentioning

confidence: 99%

Rosin natural terpenes as processing aid for polyhydroxyalkanoate: Thermal, mechanical, and viscoelastic properties

Charon

Peixinho

Michely

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Rosin natural terpene (Dertoline) is compounded with a bacterial thermoplastic polyesters polyhydroxyalkanoate (PHA), specifically here poly(3‐hydroxybutyrate) (PHB), a biodegradable and biocompatible polymer. The compatibility of the blend is examined with differential scanning calorimetry and thermal gravimetry analysis. In the range of concentration of Dertoline, from 5 to 15 wt%, a cold crystallization peak first shifts to slightly higher then lower temperature. Dynamical mechanical analysis and tensile tests confirm that the addition of Dertoline slightly decreases the elastic modulus. The degree of crystallinity again increases then decreases with the content of Dertoline. Polarized light microscopy reveals smaller diameter spherulites for PHB/Dertoline blends and their presence is discussed in relation to tensile tests. Overall, the addition of Dertoline has limited effects on mechanical properties of the blends: the stress at break and the strain at break. In addition, oscillatory rheology at different temperatures provides the activation energies and the parameters of a generalized Maxwell model. The temperature dependence of the rheological properties follows an Arrhenius form. Finally, transient step viscosity measurements are used in order to quantify the PHB thermal degradation.

show abstract

Blends of low molecular weight of poly lactic acid (PLA) with gondorukem (gum rosin)

Cited by 6 publications

References 15 publications

Modification of poly (lactic acid) through the incorporation of gum rosin and gum rosin derivative: Mechanical performance and hydrophobicity

Modification of poly (lactic acid) through the incorporation of gum rosin and gum rosin derivative: Mechanical performance and hydrophobicity

Influence of phenolic free modified rosin resin on the thermomechanical behavior of poly (lactic acid) having different crystallinities and molecular weights

Rosin natural terpenes as processing aid for polyhydroxyalkanoate: Thermal, mechanical, and viscoelastic properties

Contact Info

Product

Resources

About