Pine Resin Derivatives as Sustainable Additives to Improve the Mechanical and Thermal Properties of Injected Moulded Thermoplastic Starch

Aldás, Miguel; Pavón, Cristina; López‐Martínez, Juan; Arrieta, Marina P.

doi:10.3390/app10072561

Cited by 36 publications

(46 citation statements)

References 54 publications

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“…The resin acids, most of which are isomers of each other, can be classified into two main categories: abietic-type (including abietic, neoabietic, palustric, and levopimaric), and pimaric-type (including pimaric, isopimaric, and sandaracopimaric) [ 148 ]. Gum rosin is a high-value-added residue, in fact, it is a natural alternative to fossil-based polymers obtained from the heating and evaporation of pine resin [ 149 ], as well as a producer of organocatalysts to promote complicated asymmetric industrial synthesis [ 150 ].…”

Section: Terpenesmentioning

confidence: 99%

Plant Secondary Metabolites: An Opportunity for Circular Economy

et al. 2021

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Moving toward a more sustainable development, a pivotal role is played by circular economy and a smarter waste management. Industrial wastes from plants offer a wide spectrum of possibilities for their valorization, still being enriched in high added-value molecules, such as secondary metabolites (SMs). The current review provides an overview of the most common SM classes (chemical structures, classification, biological activities) present in different plant waste/by-products and their potential use in various fields. A bibliographic survey was carried out, taking into account 99 research articles (from 2006 to 2020), summarizing all the information about waste type, its plant source, industrial sector of provenience, contained SMs, reported bioactivities, and proposals for its valorization. This survey highlighted that a great deal of the current publications are focused on the exploitation of plant wastes in human healthcare and food (including cosmetic, pharmaceutical, nutraceutical and food additives). However, as summarized in this review, plant SMs also possess an enormous potential for further uses. Accordingly, an increasing number of investigations on neglected plant matrices and their use in areas such as veterinary science or agriculture are expected, considering also the need to implement “greener” practices in the latter sector.

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Section: Terpenesmentioning

confidence: 99%

Plant Secondary Metabolites: An Opportunity for Circular Economy

et al. 2021

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“…For instance, injection moulding is one of the most used polymer processing technologies for rigid packaging manufacturing at the industrial level. Polymers for injection moulded rigid packaging are required to have high mechanical performance to overcome the strong shear stresses during the injection moulding process and during service [28].…”

Section: Introductionmentioning

confidence: 99%

“…Pavon et al (2020) studied the addition of raw gum rosin in PCL and found that gum rosin plasticizes the PCL matrix and improved its thermal stability [37]. analysed the effect of different gum rosin derivatives (gum rosin modified with maleic anhydride, disproportionated gum rosin, and two gum rosin esters) on a pure TPS matrix and concluded that the use of gum rosin and gum rosin derivatives not only stiffened the TPS polymeric matrix, but also ensure the thermal stability in the extrusion and injection moulding processes [28]. Moreover, De la Rosa el al.…”

Section: Introductionmentioning

confidence: 99%

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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“…During the melt-extrusion and injection molding process, polymers and particularly biopolymers undergo degradation due to the strong shear stresses that act in the viscous molten polymer [ 33 , 34 ]. Thermal and mechanical characterization of material is extremely important, as this provides information on the variation produced by the introduction of filler, thermic treatments, ultraviolet radiation, and thermic cycles.…”

Section: Resultsmentioning

confidence: 99%

“…Injection molded polymers for rigid applications (e.g., packaging, domestic appliance, toys, etc.) are required for high mechanical performance to overcome the strong shear stresses during processing in order to successfully obtain injected molded parts, as well as to offer good performance during service [ 33 ]. At the engineering level, the application of a material is often determined by its mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

Study of the Properties of a Biodegradable Polymer Filled with Different Wood Flour Particles

et al. 2020

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Lignocellulosic wood flour particles with three different sizes were used to reinforce Solanyl® type bioplastic in three compositions (10, 20, and 30 wt.%) and further processed by melt-extrusion and injection molding to simulate industrial conditions. The wood flour particles were morphologically and granulometric analyzed to evaluate their use as reinforcing filler. The Fuller method on wood flour particles was successfully applied and the obtained results were subsequently corroborated by the mechanical characterization. The rheological studies allowed observing how the viscosity was affected by the addition of wood flour and to recover information about the processing conditions of the biocomposites. Results suggest that all particles can be employed in extrusion processes (shear rate less than 1000 s−1). However, under injection molding conditions, biocomposites with high percentages of wood flour or excessively large particles may cause an increase in defective injected-parts due to obstruction of the gate in the mold. From a processing point of view and based on the biocomposites performance, the best combination resulted in Solanyl® type biopolymer reinforced with wood flour particles loaded up to 20 wt.% of small and medium particles size. The obtained biocomposites are of interest for injected molding parts for several industrial applications.

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Pine Resin Derivatives as Sustainable Additives to Improve the Mechanical and Thermal Properties of Injected Moulded Thermoplastic Starch

Cited by 36 publications

References 54 publications

Plant Secondary Metabolites: An Opportunity for Circular Economy

Plant Secondary Metabolites: An Opportunity for Circular Economy

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

Study of the Properties of a Biodegradable Polymer Filled with Different Wood Flour Particles

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