ZnO deposited/encapsulated halloysite–poly (lactic acid) (PLA) nanocomposites for high performance packaging films with improved mechanical and antimicrobial properties

Silva, Rangika T. De; Pasbakhsh, Pooria; Lee, Sui Mae; Kit, Aw Yoong

doi:10.1016/j.clay.2015.03.024

Cited by 134 publications

(77 citation statements)

References 43 publications

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“…68,69 These radicals are capable of penetrating into the bacterial cells and cause complete destruction. Electrospun PAN/ZnO membranes caused 6 orders of magnitude reduction in bacteria concentration aer 8 hours of contact time (more than 3 orders of magnitude occurred aer the rst 3 hours of the contact).…”

Section: Antibacterial Analysismentioning

confidence: 99%

Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

et al. 2016

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Water scarcity has become a global systemic risk, prompting the development of more efficient filtration technologies. Recently, increasing attention has been given to low cost membrane materials such as polyacrylonitrile (PAN) nanofibers for water filtration. In this study, electrospun PAN nanofibrous membranes were functionalized with zinc oxide (ZnO) nanoparticles and coated with a layer of electrospun chitosan (Cs), in order to improve the mechanical properties, and anti-bacterial and water filtration performance of the membranes. Morphological analysis revealed that the PAN/ZnO-Cs membranes featured a structural hierarchy comprising a layer of highly porous nanofibrous PAN membranes and a less fibrous and thinner layer of a Cs coating. Addition of the Cs layer increases the tensile strength and elastic modulus of the membranes. Results acquired from a water permeability test indicated that the bi-layer membranes possessed adequate transport properties for typical membrane applications. Furthermore, the additional Cs layer and ZnO nanoparticles significantly improved the heavy metal ion adsorption performance of the PAN membranes. Moreover, the efficiency of the PAN/ ZnO-Cs membrane for bacteria filtration has a log reduction value 2 orders of magnitude higher than PAN membranes, while the efficiency of these membranes for antibacterial action (i.e. in terms of log reduction value) is 6 orders of magnitude higher than PAN membranes. These results indicate the PAN/ ZnO-Cs membranes are structurally more stable than PAN membranes, better at bacteria removal during the filtration process and better at self-cleaning (i.e. membrane biofouling resistance) than PAN membranes, signifying the potential of these membranes for water filtration applications. Fig. 7 Bacteria filtration performance of electrospun membranes. Error bars represented AE1SD from triplicate. 53890 | RSC Adv., 2016, 6, 53882-53893 This journal is

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Section: Antibacterial Analysismentioning

confidence: 99%

Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

et al. 2016

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“…The potential applications of these materials are relevant in several fields De Silva et al, 2015;Notta-Cuvier et al, 2015;Palantöken et al, 2015;Peng et al, 2015;Qi et al, 2010;Wang et al, 2013;Xue et al, 2015).…”

Section: Applications Of Hnt/polysaccharide Nanocompositesmentioning

confidence: 99%

Halloysite ‐Based Bionanocomposites

Lazzara

Massaro

Milioto

et al. 2017

Handbook of Composites From Renewable Materials

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Scientific research has been invigorated by a new class of biodegradable materials as alternatives to polymers derived from fossils. Such biomaterials can also offer economic advantages because they are derived from renewable resources. Several biopolymers (gelatin, chitin, chitosan, starch, pectin, cellulose and its modified versions, etc.) have been exploited to produce films and formulations. Their use is limited because of fast degradation, predominant hydrophilic character, and, in some cases, unsatisfactory mechanical properties. However, the properties of these polymers can be improved by using inorganic fillers such as additives. Halloysite nanotube is a promising green filler for this purpose.

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“…In this study, the two phosphites have similar molecular weight as shown in Table , but TNPP has lower steric hindrance and relatively linear structure than Irgafos. Also, the structure of HNT at external surface is composed of pores with diameter between 2 and 5 nm . Therefore, there was a possibility that a portion of antioxidant was trapped inside the pores of HNT at the surface regions, and it subsequently released back to the polymeric matrix during heat ageing test.…”

Section: Resultsmentioning

confidence: 99%

Structural effect of secondary antioxidants on mechanical properties and stabilization efficiency of polyamide 6/halloysite nanotube composites during heat ageing

Boonkongkaew

Hornsby

Sirisinha

2017

J of Applied Polymer Sci

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Hindered phenol (Irganox 1010) was combined with two kinds of secondary antioxidants [i.e., tris(2,4-di-tert-butylphenyl) phosphite (Irgafos168) and tris(nonylphenyl) phosphite (TNPP)] to form antioxidant mixtures, and their influences on mechanical properties and thermo-oxidative degradation of polyamide 6 (PA6) and halloysite nanotube (HNT) filled composites were investigated. The results showed that the antioxidant combinations provided an improvement in the oxidative induction time, decomposition temperature (T d ), processability, and tensile properties of PA6. Irganox/TNPP (1:1) was found to exhibit the best thermal oxidative resistance. The study of heat ageing in the air oven at 130 8C showed that the stabilized composites with 5 wt % of HNT could retain 92% of strength without loss of modulus. The physical characteristics of antioxidants such as low volatility and possible interaction with filler in the composites played a crucial role in stabilizing efficiency during heat ageing.

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ZnO deposited/encapsulated halloysite–poly (lactic acid) (PLA) nanocomposites for high performance packaging films with improved mechanical and antimicrobial properties

Cited by 134 publications

References 43 publications

Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

Electrospun functionalized polyacrylonitrile–chitosan Bi-layer membranes for water filtration applications

Halloysite ‐Based Bionanocomposites

Structural effect of secondary antioxidants on mechanical properties and stabilization efficiency of polyamide 6/halloysite nanotube composites during heat ageing

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