Biodegradation properties of melt processed <scp>PBS</scp>/chitosan bio‐nanocomposites with silica, silicate, and thermally reduced graphene

Patwary, Fakhruddin; Matsko, Nadejda B.; Mittal, Vikas

doi:10.1002/pc.23947

Cited by 9 publications

(8 citation statements)

References 42 publications

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“…As the filler content increases, the amount of filler particles localized directly on the sample surface statistically increases, which also increases the roughness. This is a typical result for PBS matrix composites with powder filler [128,129]. The obtained post-ageing roughness results are consistent with the above analysis of the colour results, and the obtained course of changes is directly related to the degradation of the lignocellulosic filler and the mechanical leaching of the products of this degradation [126].…”

Section: Surface Roughnesssupporting

confidence: 88%

Artificial Ageing, Chemical Resistance, and Biodegradation of Biocomposites from Poly(Butylene Succinate) and Wheat Bran

2021

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The results of comprehensive studies on accelerated (artificial) ageing and biodegradation of polymer biocomposites on PBS matrix filled with raw wheat bran (WB) are presented in this paper. These polymer biocomposites are intended for the manufacture of goods, in particular disposable packaging and disposable utensils, which decompose naturally under the influence of biological agents. The effects of wheat bran content within the range of 10–50 wt.% and extruder screw speed of 50–200 min−1 during the production of biocomposite pellets on the resistance of the products to physical, chemical, and biological factors were evaluated. The research included the determination of the effect of artificial ageing on the changes of structural and thermal properties by infrared spectra (FTIR), differential scanning calorimetry (DSC), and thermogravimetric analysis (TG). They showed structural changes—disruption of chains within the ester bond, which occurred in the composition with 50% bran content as early as after 250 h of accelerated ageing. An increase in the degree of crystallinity with ageing was also found to be as high as 48% in the composition with 10% bran content. The temperature taken at the beginning of weight loss of the compositions studied was also lowered, even by 30 °C at the highest bran content. The changes of mechanical properties of biocomposite samples were also investigated. These include: hardness, surface roughness, transverse shrinkage, weight loss, and optical properties: colour and gloss. The ageing hardness of the biocomposite increased by up to 12%, and the surface roughness (Ra) increased by as much as 2.4 µm at the highest bran content. It was also found that ageing causes significant colour changes of the biocomposition (ΔE = 7.8 already at 10% bran content), and that the ageing-induced weight loss of the biocomposition of 0.31–0.59% is lower than that of the samples produced from PBS alone (1.06%). On the other hand, the transverse shrinkage of moldings as a result of ageing turned out to be relatively small, at 0.05%–0.35%. The chemical resistance of biocomposites to NaOH and HCl as well as absorption of polar and non-polar liquids (oil and water) were also determined. Biodegradation studies were carried out under controlled conditions in compost and weight loss of the tested compositions was determined. The weight of samples made from PBS alone after 70 days of composting decreased only by 4.5%, while the biocomposition with 10% bran content decreased by 15.1%, and with 50% bran, by as much as 68.3%. The measurements carried out showed a significant influence of the content of the applied lignocellulosic fillers (LCF) in the form of raw wheat bran (WB) on the examined properties of the biocompositions and the course of their artificial ageing and biodegradation. Within the range under study, the screw speed of the extruder during the production of biocomposite pellets did not show any significant influence on most of the studied properties of the injection mouldings produced from it.

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Section: Surface Roughnesssupporting

confidence: 88%

Artificial Ageing, Chemical Resistance, and Biodegradation of Biocomposites from Poly(Butylene Succinate) and Wheat Bran

2021

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“…However, there are signs of lower weight loss than the pure PBS-CS blend. [194] and TiO 2 and polypropylene (PP) nanocomposites show efficient photocatalytic degradation behavior, [195] as well as in blends with ϵ-caprolactone/ DL-lactide (ϵ-CL/DL-LA) copolymers. [196] Table 18 summarizes the state-of-the-art information from the research studies of biodegradable nanocomposites using nano-oxides.…”

Section: A Green Approach Toward Biodegradable Nano-oxide Compositesmentioning

confidence: 99%

“…In blend with PBS‐CS, both silica and alumina have shown signs of degradability, even more compared with graphene particles. However, there are signs of lower weight loss than the pure PBS‐CS blend . and TiO 2 and polypropylene (PP) nanocomposites show efficient photocatalytic degradation behavior, as well as in blends with ɛ‐caprolactone/ dl ‐lactide (ɛ‐CL/ dl ‐LA) copolymers .…”

Section: Nanofillersmentioning

confidence: 99%

An application‐oriented roadmap to select polymeric nanocomposites for advanced applications: A review

2019

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Polymeric nanocomposites are the materials incorporating nanosized inclusions into the polymer matrixes. The result of the addition of nanoparticles/fibers is a drastic improvement in properties that may include mechanical, electrical, thermal conductivity, or even the acoustical properties. Polymer nanocomposites have spawned huge interest for the development of high‐performance products such as lightweight sensors, thin‐film capacitors, batteries, flame retardant products, biodegradable and biocompatible materials, and so on. The field of polymer nanocomposites has been at the forefront of research in the polymer community for the past few decades and an extremely large number of scientific papers have been published. Nevertheless, application‐oriented guidelines for selecting the ecofriendly nanocomposites for advanced industrial applications are missing in the state of the art. This review article summarizes the current state‐of‐the‐art polymeric nanocomposites, highlighting prominent nanofillers categorized based on their applications, origins, dimensional characteristics, and so on. Each filler type contains a short description of its main feature together with the most relevant and potential applications. To address the global concern about nondegradable wastes, novel green alternatives of each nanofiller type are discussed. Special attention is also given to the biocompatibility properties of the composites. This study provides a state‐of‐the‐art road map to select multifunctional polymeric nanocomposites from huge varieties for advanced industrial applications.

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“…Iftekhar et al [11] used a XANT-layered double hydroxide nanocomposite to remove metal ions from rare earth elements, obtaining good maxima adsorption capacities (Sc +3 : Qo = 132.30 mg/g, Nd +3 : Qo = 14.01 mg/g, Tm +3 : Qo = 18.15 mg/g, and Yb +3 : Qo = 25.73 mg/g) and finally it has been reported that organic compounds such as trichloroethylene was transformed (65 % from an aqueous solution containing 10 mg/L of this compound) by XANT-zero valent iron particles [12], and bisphenol A was adsorbed by the temperature-sensitive XANT-isopropylacrylamide hydrogel with a high efficiency (Qo = 458 mg/g) [13]. Nonetheless, the XANT-derivatization or synthesis of nanocomposites demand a considerable cost in reagents and energy, and the biodegradability of these compounds is decreased [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Removal of Azo dyes with Xanthan

et al. 2019

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The interaction among Xanthan (XANT) and three azo dyes: Direct blue 1 (DB1), Direct red 81 (DR81), and Direct black 22 (DB22) was studied. The Xanthan-dye-Al product was formed after the addition of AlCl3 to a Xanthan-Dye adduct containing solution. It was proposed that polyhydroxyoxoaluminum clusters named CAL-13 and CAL-30 react with this adduct producing a Xanthanate aluminum network, XANT-Al, and as a consequence a decrease in dye concentration in an aqueous medium was observed. The removal efficiencies obtained were the following: DB1 (99 %), DB22 (99 %) and DR81 (94 %), demonstrating that this dye removal method is very efficient. The Zimm-Bragg model adequately described the experimental data and the order observed in the Ku (nucleation) and U (aggregation) parameters from this model was the following: DB1>DB22> DR81. Evidence suggests that physicochemical properties of dyes such as charge, molecular weight, aggregation ability and the capacity of XANT-Al to trap dye molecules are involved in the high removal values. Moreover, the dye binding mechanisms include: electrostatic, hydrogen bonding and hydrophobic interactions that determine the magnitude of the parameters Ku and U. These findings suggest that the XANT polymer is a good option to remove azo dyes from an aqueous medium.

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Biodegradation properties of melt processed PBS/chitosan bio‐nanocomposites with silica, silicate, and thermally reduced graphene

Cited by 9 publications

References 42 publications

Artificial Ageing, Chemical Resistance, and Biodegradation of Biocomposites from Poly(Butylene Succinate) and Wheat Bran

Artificial Ageing, Chemical Resistance, and Biodegradation of Biocomposites from Poly(Butylene Succinate) and Wheat Bran

An application‐oriented roadmap to select polymeric nanocomposites for advanced applications: A review

Removal of Azo dyes with Xanthan

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