Investigations on Kapok/Polypropylene Needle Punched Nonwoven for Thermal Resistance Applications

Thenmozhi, R.; Thilagavathi, G.

doi:10.1080/15440478.2022.2146247

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…The key to removing microstickies by adhesion is that the surface of the collector must form a stable bond with them . Most microstickies in whitewater are hydrophobic polymers, so they were attracted to the hydrophobic PP-GMA via van der Waals forces, bonded interdiffusion, and mechanical interlocking (see Figure c). , …”

Section: Resultsmentioning

confidence: 99%

“…23 Most microstickies in whitewater are hydrophobic polymers, so they were attracted to the hydrophobic PP-GMA via van der Waals forces, bonded interdiffusion, and mechanical interlocking (see Figure 4c). 24,25 The adhesion of stickies to a material promotes the deposition of even more stickies. In summary, microstickies in papermaking whitewater can form stable bonds with surfaces modified with a homologous adhesive and remove them from the system.…”

Section: Mechanism and Application Of The "Adhesives Collect Stickies...mentioning

confidence: 99%

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Surface Modification of Adsorbents for Removing Microstickies from Papermaking Whitewater

Xu,

Mo,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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Adhesion and agglomeration of small sticky particles, i.e., microstickies, onto paper and paper machines cause serious problems for recycling mills. Because associations between materials with similar surface energies are strongest, we propose an "adhesives collect stickies" strategy to physically remove microstickies from whitewater systems. We characterized deposits from a commercial paper machine and observed a large amount of acrylate-based materials. Based on this observation, we chose to graft glycidyl methacrylate (GMA) to surfaces of polypropylene (PP) to make it more similar to the deposited stickies, which will encourage association by van der Waals forces and interdiffusion. The modified material efficiently collected acrylic adhesive particles suspended in water (58.3%) and particles found in paper mill whitewater (40.6%). Additionally, a flow cell incorporating layers of modified mats of fibers shows good efficiency (40.6−49.4%) for collecting stickies at steady flow rates. This strategy may provide a method for removing microstickies without disturbing the chemical environment of the papermaking system.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanism and Application Of The "Adhesives Collect Stickies...mentioning

confidence: 99%

Surface Modification of Adsorbents for Removing Microstickies from Papermaking Whitewater

Xu,

Mo,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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“…Fibre breakage during manufacturing weakens the overall structure, compromising the nonwoven's ability to resist bursting when exposed to increased pressure during air filtration. Polyester / Nylon / Kevlar structural effect and property [30] Polyester / Palm mechanical and ageing performances [31] polyester (HPET) / PP mechanical properties [5] polyester / Bamboo thermal resistance and the bursting strength [32] Recycled-PET / Kapok thermal resistance and air permeability [33] Polyester/viscose air permeability [34] Polyester/cotton scraps to wrap preserved fruit [35] PET / Areca building insulation applications [3] PLA/PP/Glass, PLA/PP/Hemp, PLA/Glass/Hemp, PP/Glass/ Hemp noise-control performance [36,37] PP/carbon electromagnetic shielding effectiveness [38] Carbon /Polypropylene mechanical Properties [39] PLA/TCF, PLA/flax, PLA/hemp, PP/TCF, PP/flax, PP/hemp mechanical property (Triumfetta cordifolia fibre (TCF)) [40] Jute / PP sound reduction, water absorbency, thermal resistance and air permeability [41][42][43] Kapok/PP Thermal Resistance [44] PP / Bamboo / PET, PP / Banana / PET, PP / Hemp / PET acoustic properties [45] PP / Nettle oil spill cleanup applications [2] Polyphenylene sulfide (PPS) PM2.5 filtration property, chemical resistance [46], [47] Polytetrafluoroethylene / PPS Air filtration property [48] Needle-punched nonwovens may have limitations in resistance to abrasion, which can be a concern in applications where the filter comes into contact with particulate matter or experiences friction [49]. Poor abrasion resistance can lead to the shedding of fibres, compromising the filter's efficiency and potentially https://doi.org/10.31881/TLR.2024.004…”

Section: Introductionmentioning

confidence: 99%

Blend of Fibres to Improve the Mechanical Properties of Needle-Punched Nonwovens for PM2.5 Air Filtration

Yesuf,

Memon,

Islam

et al. 2024

Text Leather Rev

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This research investigated the innovative synthesis achieved through blending five distinct fibres (Polyacrylonitrile (PAN), Polyester (PET), Polylactic acid (PLA), Polypropylene (PP), and Polyphenylene sulfide (PPS)) in the production of needle-punched nonwoven fabrics tailored for air filtration applications. The study investigated the effects of needle-punched nonwovens made with up to five fibres on the physical and mechanical properties, addressing a gap in existing literature. The method involved manual and machine opening, blending, and carding of fibre s, followed by producing three samples with different web arrangements (cross laid web, parallel laid web, and pre needled parallel lad web). The study employed standard test methods to characterize physical and mechanical properties. Results indicated that web arrangement and pre-needling significantly influenced various properties, with cross and parallel-laid web arrangements having minimal impact on thickness and bursting stretch. The parallel arrangement, whether pre-needled or not, showed no significant effect on GSM, fabric density, bursting strength, tear strength, abrasion resistance, and filtration efficiency. The highest abrasion resistance, lower pressure drop, highest fabric stiffness, moderate tensile strength, and higher bursting strength were observed in a cross-web arrangement. This study contributed valuable insights into the intricate interplay of fibre composition, web arrangement, and pre-needling in the design of advanced needle-punched nonwoven fabrics for air filtration. The findings provided a nuanced understanding of how these factors collectively impact the mechanical and physical characteristics of the material, paving the way for enhanced efficiency, durability, and versatility in air filtration applications.

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“…Studies have shown that blending different fibres into nonwoven fabrics can lead to improved properties [1][2][3][4][5][6]. Additionally, the use of multi-fibre blends in needle-punched nonwoven fabrics demonstrated improved sound absorption properties, indicating their potential for acoustic product manufacturing [7,8].…”

Section: Introductionmentioning

confidence: 99%

Fibre Blend and Web Arrangement for Optimized Dust-Holding, Hydrophobic, and Thermal Properties of Needle-Punched Nonwovens

Yesuf,

Islam,

Semanie

et al. 2024

Text Leather Rev

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PM2.5 filters with hydrophobicity and thermal resistance are preferable for automobile cabins, engine air intake, and indoor applications, safeguarding against moisture ingress, microbial growth, and temperature fluctuations, and ensuring optimal air quality. This study explored the effects of blending five fibres with different web arrangements and fibre blend compositions on needle-punched dust-holding, hydrophobic, and thermal properties. Polyphenylene sulfide (PPS), polypropylene (PP), polyester (PET), polylactic acid (PLA), and polyacrylonitrile (PAN) were blended in different proportions to produce the samples. The method included opening, blending, carding, web laying, and needle punching to produce eight samples with cross-laid, parallel-laid, and pre-needled parallel-laid web configurations. Standard test methods were employed for the characterization. The results showed a dust holding capacity of > 3,423,000 particles/cm2, the highest WCA of 133.12°, and the highest thermal resistance of 0.24255 m2KW−1. Based on the ANOVA analysis, web arrangement and pre-needling did not have a significant impact on the hydrophobicity of the samples. N0, N1, and N2 showed similar high water contact angles (~ 126°), indicating that the hydrophobicity was more affected by the chemistry of the fibre blend than by the web structure. Turkey’s analysis of other samples strengthened this idea. However, they had a substantial impact on the porosity, air permeability, dust-holding capacity, and thermal properties at a P-value ≤ 0.05. The findings provide insightful information regarding the complex interactions among fibre content, web layout, and pre-needling to develop sophisticated needle-punched PM2.5 filters.

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Investigations on Kapok/Polypropylene Needle Punched Nonwoven for Thermal Resistance Applications

Cited by 5 publications

References 16 publications

Surface Modification of Adsorbents for Removing Microstickies from Papermaking Whitewater

Surface Modification of Adsorbents for Removing Microstickies from Papermaking Whitewater

Blend of Fibres to Improve the Mechanical Properties of Needle-Punched Nonwovens for PM2.5 Air Filtration

Fibre Blend and Web Arrangement for Optimized Dust-Holding, Hydrophobic, and Thermal Properties of Needle-Punched Nonwovens

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