Effect of nanoclay on mechanical and morphological properties of poly(lactide) acid (PLA) and polypropylene (PP) blends

Zawawi, Engku Zaharah Engku; Hafizah, A.H. Noor; Romli, Ahmad Zafir; Yuliana, Nana; Bonnia, Noor Najmi

doi:10.1016/j.matpr.2020.07.612

Cited by 21 publications

(10 citation statements)

References 15 publications

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“…nanoclay, then began to drop at 5% wt. 32 This behavior, in which the impact strength (and generally other mechanical properties) increases with increasing nanoclay content, up to a point when the trend is reversed after a critical content. This phenomenon is widely observed in nanoclay-reinforced polymers and may be caused by the agglomeration associated with high contents of nanoclays, which may, in turn, lead to the restriction in polymer chains motion.…”

Section: Resultsmentioning

confidence: 97%

“…This phenomenon is widely observed in nanoclay-reinforced polymers and may be caused by the agglomeration associated with high contents of nanoclays, which may, in turn, lead to the restriction in polymer chains motion. Eventually, this will lead to a smaller elastic response when subjected to sudden impact loadings, 32 and this effect tends to boost due to the polymer blend matrix, which interacts with nanoclays leading to a decrease in impact strength. 33…”

Section: Resultsmentioning

confidence: 99%

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Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Salih

Mohammed

2022

Progress in Rubber, Plastics and Recycling Technology

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Polymer composite materials were prepared using kaolinite nanoclay as reinforcement in different weight fractions (3, 5 and 7) %, and blends of epoxy and polymethyl methacrylate (PMMA) as matrices. The current work aims to prepare a composite material with good thermal and acoustic insulation, besides improved mechanical properties, and the investigation of the effect of this nano additive on the compatibility between the two constituents of the blend, and how this compatibility might be beneficial to the performance of the prepared composite. The blend with an optimum mixing ratio (OMR) was chosen via impact test results; thus, the (80:20) percentage of epoxy and PMMA was chosen. The reinforced specimens showed an improvement in mechanical (impact and flexural) properties besides sound insulation and thermal conductivity, with the specimen reinforced with 7% nanoclay having the highest impact strength (97*10−3) KJ/m2 and the highest thermal conductivity value of (0.34) W/m.°C, with a sound intensity value 95.6 decibels at frequency 10,000 Hz. The scanning electron microscope images showed two separate phases in the unreinforced blend. In comparison, the 7% reinforced specimen showed a rough interface between the two polymer phases, suggesting a positive effect of nanoclay addition on compatibility. The differential scanning calorimeter showed two distinct glass transition temperatures for both reinforced and neat specimens, which belong to the glass transitions of both constituents (epoxy and PMMA). The main difference is the lower temperature gradient accompanied with the (nanoclay/blend) composite than the neat one. Although the blend remained immiscible, nanoclay had contributed to the compatibility and improved mechanical properties.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Salih

Mohammed

2022

Progress in Rubber, Plastics and Recycling Technology

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“…The TGA curve shows a two-stage major degradation which also goes in line with other studies. 55,56 Neat PLA exhibited 5% thermal decomposition at 343 °C, while neat PPF showed a similar decomposition at approximately 334 °C. In contrast, the blends, such as PLA/ PPF-05, PLA/PPF-10, PLA/PPF-20, and PLA/PPF-30, displayed decomposition at nearly 338, 334, 333, 314, and 334 °C.…”

Section: Analysis Of Thermal Propertiesmentioning

confidence: 96%

Thermo-Blending of Biobased Poly(propylene 2,5-furan dicarboxylate) and Poly(lactic acid) with Improved Mechanical Performance

Mahmud,

Hasan,

Dai

et al. 2024

ACS Appl. Polym. Mater.

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Sustainable polymeric blends were successfully produced by blending biobased poly(propylene 2,5-furan dicarboxylate) (PPF) with poly(lactic acid) (PLA). This study aimed to enhance the toughness of PLA, which is known for its inherent brittleness, by incorporating compatible polymeric additives. In this regard, a biosynthesized PPF polymer was used to strengthen PLA, resulting in improved tensile properties and the potential for biodegradability, as both PLA and PPF are derived from natural sources. The study revealed that the highest tensile strength (89.46 ± 2.98 MPa) was achieved with a 30% PPF reinforcement of PLA, while the greatest elongation at break (63.85 ± 4.10%) was observed with a 20% PPF reinforcement, compared to neat PLA. Additionally, the 30% PPF reinforcement of PLA exhibited a significantly higher Young's modulus of 3197.35 ± 107.25 MPa. All the blends displayed superior tensile strengths and elongation at break compared to neat PLA. Tensile strengths showed an increasing trend with a higher content of PPF copolymers. Morphological investigations indicated limited compatibility between PLA and PPF, but this characteristic did not negatively impact the thermo-mechanical performance of the developed blends. Furthermore, the thermal stability of the blends increased with a higher loading of PPF in the polymeric blend system. Overall, these sustainable composite products demonstrate promising potential for applications requiring enhanced mechanical and thermal properties. The results suggest that the developed blends are suitable for scalable production and real-life applications.

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“…The main objective is to obtain new properties through the synergistic coupling of the characteristics of the constituent polymers. 122,[342][343][344][345][346][347][348]…”

Section: Starch: Generalities and Gelatinizationmentioning

confidence: 99%

Polymer blends of poly(lactic acid) and starch for the production of films applied in food packaging: A brief review

Silva

Rios

Santana

2023

Polymers from Renewable Resources

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The limited degradation of synthetic polymers used in food packaging when discarded in the environment is a major concern for society. Therefore, industry and academia have sought to develop biodegradable and eco-friendly materials for single-use in packaging. An interesting alternative for the food industry is biodegradable polymeric films, which is why different biopolymers have been used in the production of sustainable packaging. It is worth mentioning that the use of biodegradable polymers is one of the most successful innovations in the industry to address issues related to the environment. Among the available raw materials, starch extracted from different renewable sources is very promising for this purpose, due to its abundance, low-cost compared to other polymers and ability to produce non-toxic films. However, when used alone, pure starch has many limitations, which can be overcome by developing a mixture with other polymers (polymer blends), preferably from renewable and biodegradable sources, such as poly(lactic acid) (PLA). In this context, the absence of literature reviews evidencing the results of the application of films in foods led us to write this article, given the importance of polymer blends produced with different types of starch (cassava, corn, pea, potato, rice and wheat) and the PLA matrix. According to the results, it is clear that polymer blends based on PLA/Starch for food packaging are very promising, already being part of the industries solutions, aiming to minimize the large volume of plastic waste of petrochemical origin discarded in nature. Obviously, as with any technology, more research is needed to further improve the performance of the films, and while much research has made great strides, there are still limitations that prevent the commercialization of these materials.

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Effect of nanoclay on mechanical and morphological properties of poly(lactide) acid (PLA) and polypropylene (PP) blends

Cited by 21 publications

References 15 publications

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Influence of nanoclay as a compatibilizer and a reinforcement for polymer blends used as insulators

Thermo-Blending of Biobased Poly(propylene 2,5-furan dicarboxylate) and Poly(lactic acid) with Improved Mechanical Performance

Polymer blends of poly(lactic acid) and starch for the production of films applied in food packaging: A brief review

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