Mechanical and electret properties of polypropylene unwoven fabrics reinforced with POSS for electret filter materials

Song, Xiaoyan; Zhou, Shengfeng; Wang, Yuanfeng; Kang, Weimin; Cheng, Bowen

doi:10.1007/s10965-011-9812-2

Cited by 13 publications

(6 citation statements)

References 42 publications

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“…POSSs can be used, for example, as low dielectric constant (low-k) interlayer insulators, low refractive index layers of antireflection films, 1,2 as sensors, 3 as electrolyte for ion exchange membrane in fuel cell applications, 4 as novel curing agent for epoxy system 5 and also for electret filter materials for environmental protection. 6 They have considerable importance owing to their excellent thermal, mechanical, optical, and electrical properties 7,8 due to both their nanosized and cubic structure and inorganic cage. [9][10][11] The increasing importance of POSSs is also due to their employment as fillers in the production of polymer nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Dumbbell-shaped polyhedral oligomeric silsesquioxanes/polystyrene nanocomposites: The influence of the bridge rigidity on the resistance to thermal degradation

Blanco

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Bottino

et al. 2014

Journal of Composite Materials

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A comparative study concerning the resistance to the thermal degradation of polystyrene-based nanocomposites loaded with five novel aromatic dumbbell-shaped polyhedral oligomeric silsesquioxanes was carried out in dynamic heating conditions. The fillers were formed by two identical silicon cages R 7 (SiO 1.5 ) 8 (R ¼ isobutyl) linked to several aromatic bridges (Ar, Ar-Ar, Ar-O-Ar, Ar-S-Ar and Ar-SO 2 -Ar) where Ar ¼ p-C 6 H 4 . Nanocomposites were prepared by in situ polymerization of styrene in the presence of 5% of appropriate polyhedral oligomeric silsesquioxanes. The actual filler content in the products obtained, which was checked by 1 H NMR spectroscopy, resulted in all cases slightly higher than that in starting mixtures. Glass transition temperature (T g ) was determined by differential scanning calorimetry. Thermogravimetric (TG) and differential thermogravimetric (DTG) analysis were carried out in both flowing nitrogen and static air atmosphere, and temperatures at 5% mass loss (T 5% ) were determined to investigate the resistance to the thermal degradation. The results obtained were compared with each other and discussed. The resistance to the thermal degradation showed modest increments in respect to neat polystyrene, differently from analogous nanocomposites containing as fillers aliphatic bridged polyhedral oligomeric silsesquioxanes, as supported by scanning electron microscopy measurements which evidenced polyhedral oligomeric silsesquioxanes auto-aggregation phenomena. This behaviour was interpreted as due to the rigidity of polyhedral oligomeric silsesquioxane's aromatic bridges, which leads to low miscibility between filler and polymeric matrix.

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Section: Introductionmentioning

confidence: 99%

Dumbbell-shaped polyhedral oligomeric silsesquioxanes/polystyrene nanocomposites: The influence of the bridge rigidity on the resistance to thermal degradation

Blanco

Abate

Bottino

et al. 2014

Journal of Composite Materials

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“…On the other hand, fibers with thinner diameter tend to entwist more strongly. which can significantly improve the mechanical properties of nanofiber membranes . The diameter of PVDF/POSS nanofibers decreases after addition of POSS confirmed by SEM analysis.…”

Section: Resultsmentioning

confidence: 69%

Electrospun poly(vinylidene‐fluoride)/POSS nanofiber membrane‐based polymer electrolytes for lithium ion batteries

et al. 2015

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In this study, poly(vinylidene fluoride) (PVDF)/polyhedral oligomeric silsesquioxanes (POSS) nanofibrous membranes are prepared through electrospun process. Field emission scanning electron microscope images clearly show that PVDF/POSS membranes have interconnected multi fibrous layers with ultrafine porous structures. The average fiber diameter and crystallinity of PVDF/POSS membranes are lesser than that of pure PVDF membrane. Thermal stability and electrolyte uptake of blend membranes increase with increasing POSS content. Finally, PVDF/POSS membranes are soaked in a liquid electrolyte to form the polymer electrolytes and are assembled in coin cells to test their electrochemical properties such as ionic conductivity, interfacial characteristics, and electrochemical stability windows. The ionic conductivity improves with increasing POSS content and the highest ionic conductivity reaches 2.91 × 10−3 S/cm at room temperature. It is also worth mention that the composite polymer electrolytes show low interfacial resistance and high electrochemical stability window of 5.6 V (vs. Li+ /Li) with storage time. POLYM. COMPOS., 38:629–636, 2017. © 2015 Society of Plastics Engineers

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“…The nanofiller also led to smaller elementary fiber diameters as compared to unmodified fibers [5]. Those results were corroborated by Xiaoyan Song et al, who improved mechanical, electrostatic, and filtration properties by incorporating a POSS nanofiller into a polypropylene melt [6]. The addition of magnesium stearate (MgSt) to the polypropylene melt in a melt-blown process increased its electrostatic potential and improved its filtration properties and air permeability (99.22% filtration efficiency with an airflow resistance of 85 L/min at 92 Pa).…”

Section: Introductionmentioning

confidence: 84%

Multifunctional Polymer Composites Produced by Melt-Blown Technique to Use in Filtering Respiratory Protective Devices

et al. 2020

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In this work, a multifunctional polymer composite is made using melt-blowing technology from polypropylene (88 wt.%) and poly (ethylene terephthalate) (12 wt.%) with the addition of functional modifiers, that is, 3 g of a superabsorbent polymer and 5 g of a biocidal agent (Biohaloysite). The use of modifiers is aimed at obtaining adequate comfort when using the target respiratory protection equipment (RPE) in terms of microclimate in the breathing zone and protection against harmful aerosols including bioaerosols. The developed production method is innovative in that the two powdered modifiers are simultaneously applied in the stream of elementary polymeric fibers by two independent injection systems. Aerosols of the modifiers are supplied via a specially designed channel in the central segment of the die assembly, reducing the amount of materials used in the production process and saving energy. The results show that the proposed method of incorporating additives into the fiber structure did not adversely affect the protective and functional properties of the resulting filtration nonwovens. The produced nonwoven composites are characterized by SEM, FTIR, and differential scanning calorimetry (DSC). Given their high filtration efficiency at 5%, satisfactory airflow resistance (~200 Pa), very good antimicrobial activity, and excellent water absorption capacity, the obtained multifunctional nonwoven composites may be successfully used in filtering respiratory protective devices.

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Mechanical and electret properties of polypropylene unwoven fabrics reinforced with POSS for electret filter materials

Cited by 13 publications

References 42 publications

Dumbbell-shaped polyhedral oligomeric silsesquioxanes/polystyrene nanocomposites: The influence of the bridge rigidity on the resistance to thermal degradation

Dumbbell-shaped polyhedral oligomeric silsesquioxanes/polystyrene nanocomposites: The influence of the bridge rigidity on the resistance to thermal degradation

Electrospun poly(vinylidene‐fluoride)/POSS nanofiber membrane‐based polymer electrolytes for lithium ion batteries

Multifunctional Polymer Composites Produced by Melt-Blown Technique to Use in Filtering Respiratory Protective Devices

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