Evaluation of Thermal Properties of Composites Prepared from Pistachio Shell Particles Treated Chemically and Polypropylene

Salazar-Cruz, Beatriz Adriana; Chávez-Cinco, María Yolanda; Morales‐Cepeda, Ana Beatriz; Ramos-Galván, Claudia Esmeralda; Rivera‐Armenta, José Luis

doi:10.3390/molecules27020426

Cited by 19 publications

(18 citation statements)

References 40 publications

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“…Beg et al [ 74 ] reported a 3.3% increase of X c with 40 wt% of wood flour in PP. Similar observations were made in the literature [ 73 , 74 , 75 , 76 , 77 ].…”

Section: Resultssupporting

confidence: 90%

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

et al. 2022

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In recent years, composites consisting of polymers and cellulosic materials have attracted increasing research attention. Polypropylene (PP) is among the most common polymer types found in excavated waste from landfills. Moreover, wood waste generated from wood products manufacturing such as sawdust (SD) offers a good potential for the fabrication of composite materials, and it is readily available in the environment. In this paper, wood polymer composites (WPC) consisting of recycled PP (rPP) and (SD) were prepared and characterised. A range of mechanical properties, including tensile strength, flexural properties, creep and hardness were studied, along with morphology, thermal properties, water degradation and contact angle. The results showed that the mechanical and thermal properties of rPP increased with an increase in 40 wt% of the SD content. Furthermore, the SD content significantly influenced the water uptake of the composites. Time–temperature superposition (TTS) was applied to predict the long-term mechanical performance from short-term accelerated creep tests at a range of elevated temperatures. The short-term creep test showed efficient homogeneity between the fillers and matrix with increasing temperature. The produced wood polymer composites displayed a comparable physical property to virgin polymer and wood and could potentially be used for various structural materials.

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“…Beg et al [ 74 ] reported a 3.3% increase of X c with 40 wt% of wood flour in PP. Similar observations were made in the literature [ 73 , 74 , 75 , 76 , 77 ].…”

Section: Resultssupporting

confidence: 90%

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

et al. 2022

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“…This is a result of the steric effect, with PCL being hydrophobic and BP being hydrophilic, leading to good dispersion in the fabrication of composites [ 46 , 79 ]. Similar observations were reported for the other types of WPCs [ 73 , 80 , 81 ].…”

Section: Resultssupporting

confidence: 89%

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

et al. 2022

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The use of biodegradable polymers in daily life is increasing to reduce environmental hazards. In line with this, the present study aimed to develop a fully biodegradable polymer composite that was environmentally friendly and exhibited promising mechanical and thermal properties. Bamboo powder (BP)-reinforced polycaprolactone (PCL) composites were prepared using the solvent casting method. The influence of BP content on the morphology, wettability, and mechanical and thermal properties of the neat matrix was evaluated. In addition, the degradation properties of the composites were analysed through soil burial and acidic degradation tests. It was revealed that BP contents had an evident influence on the properties of the composites. The increase in the BP content has significantly improved the tensile strength of the PCL matrix. A similar trend is observed for thermal stability. Scanning electron micrographs demonstrated uniform dispersion of the BP in the PCL matrix. The degradation tests revealed that the biocomposites with 40 wt·% of BP degraded by more than 20% within 4 weeks in the acidic degradation test and more than 5% in the soil burial degradation test. It was noticed that there was a considerable difference in the degradation between the PCL matrix and the biocomposites of PCL and BP. These results suggest that biodegradable composites could be a promising alternative material to the existing synthetic polymer composites.

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“…Salazar-Cruz et al [ 39 ] obtained similar results. In fact, by adding filler content, they obtained an increase in the composite’s melting temperature and ΔHm, indicating that a larger number of crystalline zones were present.…”

Section: Resultssupporting

confidence: 56%

The Use of Waste Hazelnut Shells as a Reinforcement in the Development of Green Biocomposites

et al. 2022

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Biodegradable Mater-Bi (MB) composites reinforced with hazelnut shell (HS) powder were prepared in a co-rotating twin-screw extruder followed by compression molding and injection molding. The effects of reinforcement on the morphology, static and dynamic mechanical properties, and thermal and rheological properties of MB/HS biocomposites were studied. Rheological tests showed that the incorporation of HS significantly increased the viscosity of composites with non-Newtonian behavior at low frequencies. On the other hand, a scanning electron microscope (SEM) examination revealed poor interfacial adhesion between the matrix and the filler. The thermal property results indicated that HS could act as a nucleating agent to promote the crystallization properties of biocomposites. Furthermore, the experimental results indicated that the addition of HS led to a significant improvement in the thermomechanical stability of the composites. This paper demonstrates that the incorporation of a low-cost waste product, such as hazelnut shells, is a practical way to produce low-cost biocomposites with good properties. With a content of HS of 10%, a remarkable improvement in the elastic modulus and impact strength was observed in both compression and injection-molded samples. With a higher content of HS, however, the processability in injection molding was strongly worsened.

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Evaluation of Thermal Properties of Composites Prepared from Pistachio Shell Particles Treated Chemically and Polypropylene

Cited by 19 publications

References 40 publications

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

The Use of Waste Hazelnut Shells as a Reinforcement in the Development of Green Biocomposites

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