Study of rosin softening point through thermal treatment for a better understanding of maritime pine exudation

Cabaret, Thomas; Boulicaud, Benjamin; Chatet, Emmanuel; Charrier, Bertrand

doi:10.1007/s00107-018-1339-3

Cited by 18 publications

(18 citation statements)

References 29 publications

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“…T g values are presented in Table 3. T g values agreed with the range reported by Cabaret et al for industrial gum rosin 9 . The value of T g in CA and CI presents no statistical differences ( p < 0.05) among them, as well as T g of CB, CE, and CP.…”

Section: Resultssupporting

confidence: 90%

“…This band corresponds to the overtone stretching of the carboxyl group 35 . The characteristic band of carboxylic acid bonding ν(C═O) is observed at 1694 cm −1 9,33 . Finally, in the fingerprint region, between 1500 and 600 cm −1 , the absorption bands found between 1200 and 800 cm −1 are characteristic of diterpenic resins, 32 while specific bands of gum rosin are at 1278 (COC) and 712 cm −1 32 .…”

Section: Resultsmentioning

confidence: 92%

“…Chemically, gum rosin contains 90%–95% of resin acids, whose molecular formula is C 19 H 29 COOH, 3,7 and 5%–10% neutral substances such as alcohols, aldehydes, and hydrocarbons 5,8–11 . The most common resin acids groups in gum rosin are the abietadienes (abietic, levopimaric, palustric, and neoabietic) and the pimaradienes (pimaric, isopimaric, and sandaracopimaric acid) 9,12 . On one hand, the abietadienes are presented mainly as carboxylic acids with three fused six‐carbon rings and conjugated double bonds.…”

Section: Introductionmentioning

confidence: 99%

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Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

Pavón

Aldás

Hernández‐Fernández

et al. 2021

J of Applied Polymer Sci

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There is a growing interest in the use of non‐polluting compounds, which come from renewable sources, and which performance in their scope is equivalent to their synthetic similes. In this work, five types of rosins from different sources were studied, verifying the existence of differences that can be inferred in their subsequent use and application as material additives. For the study, rosins were analyzed using gas‐mass chromatographic techniques, infrared spectrophotometry (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and color characterization. The results showed that the samples are composed of either abietic acid or by its structural isomers in contents higher than 80%. FTIR shows that the main difference in the gum rosins is related to the proclivity to absorb environmental moisture and that this technique is not enough to differentiate them. Moreover, the DSC reveals that the gum rosins present enthalpy relaxation effects due to their manufacturing process. The TGA showed that gum rosins are thermally stable until 200°C, therefore they can be successfully blended with thermoplastic polymers. Finally, the color characterization shows little differences between the samples, being CA the gum rosin with the greatest total color differences.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

Pavón

Aldás

Hernández‐Fernández

et al. 2021

J of Applied Polymer Sci

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“…Finally, the total colour differences (∆E) present statistical differences between all the samples (p < 0.05) showing values of ∆E higher than 2, which means that the change in colour in the formulations is appreciable to the human eye [37,68]. The variation in the colour of PBAT due to the addition of GR or UT is because the inherent yellowish coloration of the additives [69,70]. Nevertheless, it should be mentioned that although other packaging applications were transparent and colourless formulations are highly desired (i.e., films), for injection moulded rigid packaging applications, the tendency to yellow does not represent a limitation.…”

Section: Dynamic Mechanical Thermal Characterizationmentioning

confidence: 98%

Improvement of PBAT Processability and Mechanical Performance by Blending with Pine Resin Derivatives for Injection Moulding Rigid Packaging with Enhanced Hydrophobicity

et al. 2020

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Polybutylene adipate-co-terephthalate (PBAT) is a biodegradable polymer with good features for packaging applications. However, the mechanical performance and high prices of PBAT limit its current usage at the commercial level. To improve the properties and reduce the cost of PBAT, pine resin derivatives, gum rosin (GR) and pentaerythritol ester of GR (UT), were proposed as sustainable additives. For this purpose, PBAT was blended with 5, 10, and 15 wt.% of additives by melt-extrusion followed by injection moulding. The overall performance of the formulations was assessed by tensile test, microstructural, thermal, and dynamic mechanical thermal analysis. The results showed that although good miscibility of both resins with PBAT matrix was achieved, GR in 10 wt.% showed better interfacial adhesion with the PBAT matrix than UT. The thermal characterization suggested that GR and UT reduce PBAT melting enthalpy and enhance its thermal stability, improving PBAT processability. A 10 wt.% of GR significantly increased the tensile properties of PBAT, while a 15 wt.% of UT maintained PBAT tensile performance. The obtained materials showed higher hydrophobicity than neat PBAT. Thus, GR and UT demonstrated that they are advantageous additives for PBAT–resin compounding for rigid food packaging which are easy to process and adequate for industrial scalability. At the same time, they enhance its mechanical and hydrophobic performance.

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“…It is worthy to mention that, gum rosin is a natural complex mixture obtained from the oleoresin of pine trees and its thermal properties could variate depending on the method and process of extraction. In a prior study, Cabaret et al, has reported rosin softening point temperature around 43.8 C. [54] Regarding the thermal stability assessment, Figure 6 shows the TGA and derivative thermogravimetric (DTG) curves of neat PLA and PLA formulations with the TGA varying content of GR and PEGR. Meanwhile, Table 3 shows the onset degradation temperature values (T 5% ) determined at 5% of mass loss and the temperature values of the maximum decomposition rate (T max ), calculated from the first derivative of the TGA curves.…”

Section: Color Measurementsmentioning

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

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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.

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Study of rosin softening point through thermal treatment for a better understanding of maritime pine exudation

Cited by 18 publications

References 29 publications

Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

Comparative characterization of gum rosins for their use as sustainable additives in polymeric matrices

Improvement of PBAT Processability and Mechanical Performance by Blending with Pine Resin Derivatives for Injection Moulding Rigid Packaging with Enhanced Hydrophobicity

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

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