Improving agricultural waste pulps via self-blending concept with potential use in moulded pulp packaging

Rattanawongkun, Phattharasaya; Kerddonfag, Noppadon; Tawichai, Nattaya; Intatha, Uraiwan; Soykeabkaew, Nattakan

doi:10.1016/j.jece.2020.104320

Cited by 19 publications

(11 citation statements)

References 23 publications

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“…Cellulose is the most important contributor to cell wall structure and strength; thus being critical to retain or increase the overall cellulose content in the fibers for pulp‐based packaging 5,44 . All treated AP exhibited higher cellulose percentage compared to APC, especially those treated by CA + SB, NaOH, and HCl + NaOH with significantly ( p < 0.05) higher cellulose content than APC.…”

Section: Resultsmentioning

confidence: 99%

“…Molded pulp packaging is typically made out of recycled newspapers (NP) from wood fibers. However, due to continuous decline of recycled NP, industry has been seeking alternative fibers, especially plant fibers to substitute NP 4,5 …”

Section: Introductionmentioning

confidence: 99%

“…However, due to continuous decline of recycled NP, industry has been seeking alternative fibers, especially plant fibers to substitute NP. 4,5 Apple pomace (AP), a byproduct from apple juice processing and one of the largest plant fiber waste sources, has long been an economic and environmental issue for the apple juice industry. [6][7][8] While research has been conducted to develop value-added applications of AP, such as reinforced films, 9 compression molded 10 and injection molded composites, 11 study on utilizing AP as bulk material in producing compostable packaging product is extremely limited.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of eco‐friendly chemical treatments of apple pomace for producing high quality molded pulp biocomposite

Lang

Wang

Zhao

2021

J of Applied Polymer Sci

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Eco-friendly chemical treatments using citric acid (CA) and sodium bicarbonate were employed to remove pectin, hemicellulose, and extractives from apple pomace (AP) for improving AP fiber quality and maximizing its utilization in producing biocomposite boards with newspaper (NP) fibers (AP:NP ratio of 2:1) using molded pulp technique. CA treatment was further optimized at different pH and temperature and cellulose nanofiber (CNF, 0.15, 0.3% w/w pulp solids) was used as reinforcement agent to enhance mechanical property and water resistance of biocomposite boards. CA treatment improved AP fiber strength and cellulose content. AP treated by CA at pH 2.5 and 75 C with 0.15% CNF reinforcement produced AP/NP biocomposite board with high flexural strength, and dimension stability, and low density. Thermal analysis verified increased cellulose content, crystallinity, and thermal stability of CA treated AP fibers. This study provided new insight to improve fiber functionality and utilize AP for developing sustainable packaging.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of eco‐friendly chemical treatments of apple pomace for producing high quality molded pulp biocomposite

Lang

Wang

Zhao

2021

J of Applied Polymer Sci

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“…GFs also have the disadvantage of being difficult to dispose of after use [8]. Agricultural residues such as bagasse, rice straw, wheat straw, pineapple leaf, or date palm residues contain high cellulose and hemicellulose contents and therefore low lignin contents [9]. However, agricultural residues are often burned or disposed of in landfills, resulting in environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Valorization of Date Palm Waste for Plastic Reinforcement: Macro and Micromechanics of Flexural Strength

et al. 2021

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Date palm waste is an abundant agricultural residue in Tunisia and can be used for plastic reinforcement. Moreover, its use in plastic composites can help to reduce dependence on fossil resources for material production. In this work, the valorization of date palm residues was studied by employing high-yield processes following mechanical, chemical, and enzymatical treatments. Fibers obtained by soft chemical treatment with sodium hydroxide and enzymatic treatment with xylanases and pectinases were evaluated for their use in the reinforcement of plastic materials. The flexural strength property, truly relevant for structural, construction, automotive, or other market sectors, was adopted to assess the reinforcing potential of the fibers. Polypropylene was effectively reinforced with date palm fibers (60 wt.%), exhibiting a flexural strength increases of 80% (73.1 MPa), 93% (78.5 MPa), and 106% (83.9 MPa) for mechanical, chemical, and enzymatic fibers, respectively. The different treatments had an impact on the chemical composition of the fibers, and by extension on the final properties of the composites. The holocellulose content could provide good interfacial adhesion using a coupling agent, whereas the lignin content improved the dispersion of the phases. Two interesting outcomes were that the flexural performance of enzymatic fibers was like that of wood composites, whereas the specific flexural strength was comparable to that of glass fiber composites. Overall, the present work has shown the potential behind date palm waste in the composite sector when a specific property or application is desired. Novel treatments have been used for greater fiber compatibility, increasing the sustainability of the process, and improving the applicability of the palm residue.

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“…With the increasing awareness and concern towards sustainability, paper and pulp packaging from wood and non-wood resources has gained significant amount of attention lately to replace current petrochemical-based packaging materials [1]. To improve the performance of pulp packaging, the use of nanofibrillated cellulose (NFC) as strength additive has been widely investigated owning to its several unique properties, including the extremely large specific surface area, high aspect ratio, high strength, high stiffness, renewability, and biodegradability.…”

Section: Introductionmentioning

confidence: 99%

Tailoring nanofibrillated cellulose through sonication and its potential use in molded pulp packaging

et al. 2021

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Nanofibrillated cellulose (NFC) was systematically tailored by ultrasonic-assisted esterification with lactic acid at different amplitudes and times, which led to modified NFC (mNFC) with different degrees of substitution (DS), between 0.21 and 0.55, as confirmed by titration, FTIR, and C 13 NMR. A partial fragmentation and decrease in crystallinity of mNFC were revealed by TEM and XRD. To form molded pulp sheets, 5 wt% mNFC was added into a bagasse (BG) pulp slurry, then partially dewatered before hot-pressed. mNFC worked effectively as selfretention aid, partly solving the issue of drainage during sheet forming as commonly observed from unmodified NFC. The BG/mNFC (DS 0.55) sheet exhibited an enhancement in tensile properties. Water resistance and barrier performance of the current sheets were also evidently increased. The results suggested that the higher DS on mNFC can improve water resistance and mechanical properties, simultaneously overcoming drainage challenges in processing of molded pulp products.

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Improving agricultural waste pulps via self-blending concept with potential use in moulded pulp packaging

Cited by 19 publications

References 23 publications

Investigation of eco‐friendly chemical treatments of apple pomace for producing high quality molded pulp biocomposite

Investigation of eco‐friendly chemical treatments of apple pomace for producing high quality molded pulp biocomposite

Valorization of Date Palm Waste for Plastic Reinforcement: Macro and Micromechanics of Flexural Strength

Tailoring nanofibrillated cellulose through sonication and its potential use in molded pulp packaging

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