Mechanical performance, heat transfer and conduction of ultrasonication treated polyaniline bio-based blends

Shahdan, Dalila; Ahmad, Sahrim; Chen, Ruey Shan; Omar, Afiqah; Zailan, Farrah Diyana; Hassan, Nur Adilah Abu

doi:10.1016/j.icheatmasstransfer.2020.104742

Cited by 16 publications

(8 citation statements)

References 40 publications

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“…In this sense, our previous studies applied an ultrasonic treatment to assist in the mechanical exfoliation and dispersion of particles in the nanocomposite. The findings of studies on a NiZn ferrite nanofiller alone, PANi alone and hybrid GnP/PANi-based PLA showed that 1 h (which was used in this study) ultrasonication was optimal for the enhancement of mechanical (~23% and 117% increments in tensile strength and elongation at break in the latter study) and thermal properties [5,17]. These findings showed that ultrasonic treatment majorly contributed to the improvement in terms of the dispersion and distribution of the reinforcing particles [5,17]; however, they did not provide any information on the chemical or physical interaction between the components in the composites.…”

Section: Introductionmentioning

confidence: 63%

“…In order to improve the toughness (ductility) properties of individual PLA, research on PLA blending with modified liquid natural rubber (m-NR)/polymers [11,12] and fillers/reinforcements Polymers 2022, 14, 5009 2 of 17 such as carbon nanotubes (CNTs) [13], nickel-zinc (NiZn) ferrite [14] and cellulose [15] has been performed. Our previous study proved that the inclusion of polyaniline (PANi) in a PLA/rubber blend enhanced the mechanical and thermal properties in addition to promoting the conductive properties, even at minimal amounts (ranging from 0.03 to 0.11 wt%) [5,16].…”

Section: Introductionmentioning

confidence: 96%

“…Studies on polymer matrix nanocomposites have been widely conducted, as they can promote the best performance with versatile properties [1][2][3][4][5][6] and have potential applications in many fields, such as biomedicine [7,8] and electronic devices [9], and even in daily use, such as food packaging [10]. Despite that, the most debated issue is that polymeric base materials lead to solid waste problems since they only degrade or decompose after a very long time.…”

Section: Introductionmentioning

confidence: 99%

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A Feasible Compatibilization Processing Technique for Improving the Mechanical and Thermal Performance of Rubbery Biopolymer/Graphene Nanocomposites

et al. 2022

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Over the last few decades, processing and compatibility have become challenging and interesting investigation areas of polymer matrix nanocomposites. This study investigated the addition of maleic anhydride (MAH) at different ratios with graphene nanoplatelets (GnPs) in poly(lactic acid)/modified natural rubber/polyaniline/GnP (PLA/m-NR/PANI/GnP) nanocomposites via two processing methods: a two-step technique and a one-pot technique. The former technique involved first preparing a master batch of PLA grafted with MAH, followed by a second step involving the melt blending of the nanocomposite (T1) using MAH-g-PLA. On the other hand, the one-pot technique involved the direct mixing of MAH during the melt-blending process (T2). The mechanical, morphological and thermal properties of the prepared nanocomposites were investigated. The findings showed that adding MAH significantly improved the tensile strength and elongation at break by about 25% for PLA/m-NR/PANi/GnP nanocomposites, with an optimal ratio of 1:1 of MAH-g-PLA to GnP loading using the T1 technique. FTIR analysis confirmed the chemical interaction between MAH and PLA for T1 nanocomposites, which exhibited improved phase morphology with smoother surfaces. MAH-compatibilized nanocomposites had enhanced thermal stabilities when compared to the sample without a compatibilizer. The findings show that the compatibilized PLA nanocomposite is potentially suitable for bio-inspired materials.

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Section: Introductionmentioning

confidence: 63%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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A Feasible Compatibilization Processing Technique for Improving the Mechanical and Thermal Performance of Rubbery Biopolymer/Graphene Nanocomposites

et al. 2022

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“…Figure 3 a showed the normal homogenous distribution of PLA and PAni, which is due to the fact that PAni was added slowly to the PLA and glycerol solution mixture with constant stirring to get a homogenous solution. Thus, a homogenous and consistent micrograph of PLA/PAni ( Figure 3 a) indicated a good dispersion of PAni in PLA [ 16 , 17 ].…”

Section: Resultsmentioning

confidence: 99%

Crazing Effect on the Bio-Based Conducting Polymer Film

et al. 2021

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The biodegradability problem of polymer waste is one of the fatal pollutFions to the environment. Enzymes play an essential role in increasing the biodegradability of polymers. In a previous study, antistatic polymer film based on poly(lactic acid) (PLA) as a matrix and polyaniline (PAni) as a conductive filler, was prepared. To solve the problem of polymer wastes pollution, a crazing technique was applied to the prepared polymer film (PLA/PAni) to enhance the action of enzymes in the biodegradation of polymer. This research studied the biodegradation test based on crazed and non-crazed PLA/PAni films by enzymes. The presence of crazes in PLA/PAni film was evaluated using an optical microscope and scanning electron microscopy (SEM). The optical microscope displayed the crazed in the lamellae form, while the SEM image revealed microcracks in the fibrils form. Meanwhile, the tensile strength of the crazed PLA/PAni film was recorded as 19.25 MPa, which is almost comparable to the original PLA/PAni film with a tensile strength of 20.02 MPa. However, the Young modulus decreased progressively from 1113 MPa for PLA/PAni to 651 MPa for crazed PLA/PAni film, while the tensile strain increased 150% after crazing. The significant decrement in the Young modulus and increment in the tensile strain was due to the craze propagation. The entanglement was reduced and the chain mobility along the polymer chain increased, thus leading to lower resistance to deformation of the polymer chain and becoming more flexible. The presence of crazes in PLA/PAni film showed a substantial change in weight loss with increasing the time of degradation. The weight loss of crazed PLA/PAni film increased to 42%, higher than that of non-crazed PLA/PAni film with only 31%. The nucleation of crazes increases the fragmentation and depolymerization of PLA/PAni film that induced microbial attack and led to higher weight loss. In conclusion, the presence of crazes in PLA/PAni film significantly improved enzymes’ action, speeding up the polymer film’s biodegradability.

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“…It is well known that PLA is a biodegradable in nature and possesses a comparable properties to that of petroleumbased polymers such as polyethylene terephthalate and polystyrene. [1] In addition, PLA is deemed one of the best thermoplastic polymers that has high-strength, modulus, and toughness. [2] Nonetheless, PLA suffers from shortcomings such as low thermal stability, poor hydrophilicity, slow crystallization rate, and poor mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Mechanical and Electrical Performances of Polylactic Acid/Liquid Natural Rubber/Graphene Platelets Nanocomposites in the Light of Different Graphene Platelets Functionalization Routes

Amran

Ahmad

Chen

et al. 2021

Macro Chemistry & Physics

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The essence core of this study is to investigate the effect of functionalization of graphene platelets (GNPs) and its low loadings of 0.25, 0.50, 0.75, and 1.00 wt% on the chemical, mechanical, and electrical properties of polylactic acid/liquid natural rubber (PLA/LNR) blend prepared by melt blending method. GNPs are treated with amino dodecanoic acid via covalent interaction and Triton X-100 (TX100) via non-covalent interaction to produce ADA-functionalized GNPs (GNP-A) and TX100-functionalized GNPs (GNP-T), respectively. At 0.75 wt% GNPs, the PLA/LNR nanocomposites exhibit the highest tensile strength of 24.38, 35.70, 45.47 MPa for untreated GNPs (GNP-u), GNP-T, and GNP-A, respectively. Variable pressure scanning electron microscopy proves better interaction of treated-GNPs with the matrix, while transmission electron microscopy micrographs have shown that PLA/LNR/GNP-A has the best filler dispersion with minimal stacking and agglomeration found. A remarkable improvement of electrical properties is observed for treated-GNPs nanocomposite with lower percolation threshold value of 0.3 wt% as compared to that of GNP-u nanocomposite (0.4 wt%).

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Mechanical performance, heat transfer and conduction of ultrasonication treated polyaniline bio-based blends

Cited by 16 publications

References 40 publications

A Feasible Compatibilization Processing Technique for Improving the Mechanical and Thermal Performance of Rubbery Biopolymer/Graphene Nanocomposites

A Feasible Compatibilization Processing Technique for Improving the Mechanical and Thermal Performance of Rubbery Biopolymer/Graphene Nanocomposites

Crazing Effect on the Bio-Based Conducting Polymer Film

Assessment of Mechanical and Electrical Performances of Polylactic Acid/Liquid Natural Rubber/Graphene Platelets Nanocomposites in the Light of Different Graphene Platelets Functionalization Routes

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