Green enhancement of wood plastic composite based on agriculture wastes compatibility via fungal enzymes

Hasanin, Mohamed S.; El-Aziz, M.E. Abd; El-Nagar, Islam; Hassan, Youssef R.; Youssef, Ahmed M.

doi:10.1038/s41598-022-21705-3

Cited by 13 publications

(7 citation statements)

References 54 publications

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“…The assimilation of larger complexes into a cell can be facilitated by production of complex enzymes, particularly extracellular enzymes that could bind to the hydrophobic surfaces and acts in cleavage of long chains 2 . Lignolytic enzymes play a key role as natural surface activators, by oxidation it creates surface morphological changes that could result in increased surface compatibility 41 . Polyethylene degradation by microbes facilitated through Lac, MnP and LiP has been reported 38 , 41 – 43 .…”

Section: Resultsmentioning

confidence: 99%

“…Lignolytic enzymes play a key role as natural surface activators, by oxidation it creates surface morphological changes that could result in increased surface compatibility 41 . Polyethylene degradation by microbes facilitated through Lac, MnP and LiP has been reported 38 , 41 – 43 . Hence, the major lignolytic enzymes viz., Lac, MnP and LiP were quantified in the culture filtrate of C. sphaerospermum grown in LDPE medium on the 7th day.…”

Section: Resultsmentioning

confidence: 99%

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Mycodegradation of low-density polyethylene by Cladosporium sphaerospermum, isolated from platisphere

Sathiyabama,

Boomija,

Sathiyamoorthy

et al. 2024

Sci Rep

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Plastic accumulation is a severe threat to the environment due to its resistivity to thermal, mechanical and biological processes. In recent years, microbial degradation of plastic waste disposal is of interest because of its eco-friendly nature. In this study, a total of 33 fungi were isolated from the plastisphere and out of which 28 fungal species showed halo zone of clearance in agarized LDPE media. The fungus showing highest zone of clearance was further used to evaluate its degradation potential. Based on morphological and molecular technique, the fungus was identified as Cladosporium sphaerospermum. The biodegradation of LDPE by C. sphaerospermum was evaluated by various methods. The exposure of LDPE with C. sphaerospermum resulted in weight loss (15.23%) in seven days, higher reduction rate (0.0224/day) and lower half-life (30.93 days). FTIR analysis showed changes in functional group and increased carbonyl index in LDPE treated with C. sphaerospermum. SEMimages evidenced the formation of pits, surface aberrations and grooves on the LDPE film treated with the fungus whereas the untreated control LDPE film showed no change. AFM analysis confirmed the surface changes and roughness in fungus treated LDPE film. This might be due to the extracellular lignolytic enzymes secreted by C. sphaerospermum grown on LDPE. The degradation of polyethylene by Short chain alkanes such as dodecane, hexasiloxane and silane were identified in the extract of fungus incubated with LDPE film through GC–MS analysis which might be due to the degradation of LDPE film by C. sphaerospermum. This was the first report on the LDPE degradation by C. sphaerospermum in very short duration which enables green scavenging of plastic wastes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mycodegradation of low-density polyethylene by Cladosporium sphaerospermum, isolated from platisphere

Sathiyabama,

Boomija,

Sathiyamoorthy

et al. 2024

Sci Rep

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“…Currently, natural ber plastic composite (NFPC) has been successfully produced from pure Polyethylene (PE) plastic, PE waste, and sun ower ber. Biological treatment of sun ower ber using the fungus Rhizopus Oryzae with the solid-state fermentation method, succeeded in increasing the compatibility, mechanical properties, and biodegradability of NFPC [13].…”

Section: Introductionmentioning

confidence: 99%

A Simple Processed Waste Composite Board Product with Superior Properties than The Market Wood Board

Surtiyeni,

Fadhillah,

Salim

et al. 2024

Preprint

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Municipal waste as a renewable resource has been processed into biocomposite boards as a substitute for wood to reduce environmental pollution. The biocomposite performance is governed through the interface between the fibers and the polymer matrix. However, the manufacture of biocomposites is often limited to the use of homogeneous types and sizes of fibers, with complex chemical or biological treatment of fibers to improve interfacial compatibility. Herewith, we report success in increasing compatibility through simple mechanical and physical treatment. The increase in the mechanical properties of biocomposites is influenced by variations in filler fiber sizes, the maximum polymer coating on the filler surface, and the addition of reinforcing elements to the biocomposite board structure. Variations in size of plant fiber can be obtained through mechanical treatment with single milling process, while physical treatment of repeated hot-press processes ensure that polymer coats the entire fiber surface. Furthermore, glass fiber laminate is added to the middle of the board as a structural reinforcement. Our result shows that the properties of the simple processed biocomposite have strength equivalent to commercial particle board and Albasia wood, as well as better fire resistance properties than Albasia wood. This makes waste composite boards suitable as a new substitutes for wood boards.

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“…3,4 One of the best methods proposed is the use of new coupling agents of higher quality than common coupling agents such as maleic anhydride grafted polymer (MAH-g) in the composite. 5,6 However, although MAH-g can improve the most properties of WPCs these types of coupling agent have high cost. 5 Hence, finding a new coupling agent having a better performance and less expensive than MAH-g is topical to increase the performance of WPCs.…”

Section: Introductionmentioning

confidence: 99%

“…5,6 However, although MAH-g can improve the most properties of WPCs these types of coupling agent have high cost. 5 Hence, finding a new coupling agent having a better performance and less expensive than MAH-g is topical to increase the performance of WPCs.…”

Section: Introductionmentioning

confidence: 99%

Maleated nanolignin as a new coupling agent for wood-plastic composites

Younesi-Kordkheili

2023

Journal of Composite Materials

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In this work, the influence of maleic anhydride-treated nanolignin as a coupling agent on the various properties of wood fiber-polypropylene composites was investigated. For this purpose, extracted lignin from Bagasse Soda black liquor was modified with maleic anhydride and then different ratios of unmodified and modified nanolignin (1, 3 and 5 wt%) were added to the wood fiber-polypropylene mixture. The composites were then manufactured by injection molding after mixing mechanically to the wood flour either virgin or maleated nanolignin and polypropylene. Structural and thermal properties of nanolignin after modification by maleic anhydride along with physical and mechanical properties of the manufactured composites were determined according to standard methods. The FTIR analysis indicated nanolignin rearrangements showing that some bonds changed or formed after its modification with maleic anhydride. The glass transition temperature of the nanolignin decreased by esterification from 130°C to 100°C. The panel testing results indicated that all physical and mechanical properties of the composites were continuously improved by increasing the maleated nanolignin content from 1 to 5wt%. Thus, the composites with maleated nanolignin presented higher dimensional stability and mechanical strength compared to those prepared with unmodified nanolignin. Scanning electron microscopy (SEM) showed that treatment with maleic anhydride improves the uniform dispersion of nanolignin in the polymer matrix. The manufactured WPCs can be used as interior and exterior building materials such as decks, sidings and etc.

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Green enhancement of wood plastic composite based on agriculture wastes compatibility via fungal enzymes

Cited by 13 publications

References 54 publications

Mycodegradation of low-density polyethylene by Cladosporium sphaerospermum, isolated from platisphere

Mycodegradation of low-density polyethylene by Cladosporium sphaerospermum, isolated from platisphere

A Simple Processed Waste Composite Board Product with Superior Properties than The Market Wood Board

Maleated nanolignin as a new coupling agent for wood-plastic composites

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