Effect of polypropylene fiber cross sectional shapes on some structural/mechanical fiber properties and compressibility behaviour of plain knitted fabrics

Kara, Şükran; Erdoğan, Ümit Halis; Erdem, Nilüfer

doi:10.1007/s12221-012-0790-8

Cited by 14 publications

(6 citation statements)

References 15 publications

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“…The 1D line plots for these two samples show almost identical peaks at q = 9.9 nm -1 (d = 6.32 Å), q = 11.9 nm -1 (d = 5.28 Å), q = 13.1 nm -1 (d = 4.80 Å), and q = 15 nm -1 (d = 4.19 Å), corresponding to the (110), ( 040), ( 130) and (111) crystal planes, and the low intensity peaks at q = 18.0 nm -1 (d = 3.49 Å), q = 19.1 nm -1 (d = 3.29 Å), and q = 20 nm -1 (d = 3.14 Å) correspond to the (060), ( 200) and (220) crystal planes. These peaks and the corresponding d-spacing are characteristic of isotactic α-propylene [47][48][49]. As such, the XRD measurements did not detect the presence of any erucamide on sample 6…”

Section: Resultsmentioning

confidence: 99%

“…The analysis was performed in IGOR Pro (WaveMetrics, Portland, USA) and the peaks were assigned based on the available literature. XRD patterns on polyolefins are often reported as scattered intensity vs. diffraction angle (2θ) [47][48][49], and here we will plot the intensity vs. q, where the momentum transfer 𝑞 = 4𝜋 𝑠𝑖𝑛 𝜃 /𝜆. Combined with the Bragg law 2𝑑 𝑠𝑖𝑛 𝜃 = 𝑛𝜆 the d-spacing of the fibre crystal could be determined as from the n th Bragg peak position qn as…”

Section: X-ray Diffraction (Xrd) For the Xrd Measurement At The Beaml...mentioning

confidence: 99%

See 1 more Smart Citation

Multiscale characterisation of single synthetic fibres: Surface morphology and nanomechanical properties

Gubala

Harniman

Eloi

et al. 2020

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Section: X-ray Diffraction (Xrd) For the Xrd Measurement At The Beaml...mentioning

confidence: 99%

Multiscale characterisation of single synthetic fibres: Surface morphology and nanomechanical properties

Gubala

Harniman

Eloi

et al. 2020

Journal of Colloid and Interface Science

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“…The anisotropic 2D XRD patterns of the fiber samples (Figure D) are indicative of certain preferential orientations of the crystalline domains with respect to the fiber c -axis. , The three low- q equatorial Bragg reflections are characteristic for isotactic α-polypropylene d -spacing (cf. Table ) d = 6.30 Å, d = 5.28 Å (or d = 5.27 Å for PP + ER), and d = 4.80 Å, corresponding to the (110), (040), and (130) planes oriented normal to the surface of the polypropylene crystalline lamellae (001), composed of polymer chains oriented parallel to the meridian (i.e., c -axis). ,− The equatorial reflections indicate a regular structural repeat in the direction along the direction of the fiber radius.…”

Section: Results and Discussionmentioning

confidence: 99%

Effects of Erucamide on Fiber “Softness”: Linking Single-Fiber Crystal Structure and Mechanical Properties

Gubała,

Slastanova,

Matthews

et al. 2024

ACS Nano

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Erucamide is known to play a critical role in modifying polymer fiber surface chemistry and morphology. However, its effects on fiber crystallinity and mechanical properties remain to be understood. Here, synchrotron nanofocused X-ray Diffraction (nXRD) revealed a bimodal orientation of the constituent polymer chains aligned along the fiber axis and cross-section, respectively. Erucamide promoted crystallinity in the fiber, leading to larger and more numerous lamellae crystallites. The nXRD nanostructual characterization is complemented by single-fiber uniaxial tensile tests, which showed that erucamide significantly affected fiber mechanical properties, decreasing fiber tensile strength and stiffness but enhancing fiber toughness, fracture strain, and ductility. To correlate these single-fiber nXRD and mechanical test results, we propose that erucamide mediated slip at the interfaces between crystallites and amorphous domains during stress-induced single-fiber crystallization, also decreasing the stress arising from the shear displacement of microfibrils and deformation of the macromolecular network. Linking the single-fiber crystal structure with the single-fiber mechanical properties, these findings provide the direct evidence on a single-fiber level for the role of erucamide in enhancing fiber “softness”.

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“…However, the chemical solvent used during the process and time-consuming procedure are not beneficial for commercial utilization. The polymer nanofiber preparation can be simplified if the melt spinning can be used with specific deign, such as ultrathin spinneret and fiber cross-section structure design corresponding to the spinneret ( Karaca and Ozcelik, 2007 ; Kara et al, 2012 ).…”

Section: Fibrous Building Blocks Synthesismentioning

confidence: 99%

Fibrous Aerogels for Solar Vapor Generation

Zhang²,

Shahriari-Khalaji³

et al. 2022

Front. Chem.

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Solar-driven vapor generation is emerging as an eco-friendly and cost-effective water treatment technology for harvesting solar energy. Aerogels are solid materials with desirable high-performance properties, including low density, low thermal conductivity, and high porosity with a large internal surface, which exhibit outstanding performance in the area of solar vapor generation. Using fibers as building blocks in aerogels could achieve unexpected performance in solar vapor generation due to their entangled fibrous network and high surface area. In this review, based on the fusion of the one-dimensional fibers and three-dimensional porous aerogels, we discuss recent development in fibrous aerogels for solar vapor generation based on building blocks synthesis, photothermal materials selection, pore structures construction and device design. Thermal management and water management of fibrous aerogels are also evaluated to improve evaporation performance. Focusing on materials science and engineering, we overview the key challenges and future research opportunities of fibrous aerogels in both fundamental research and practical application of solar vapor generation technology.

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Effect of polypropylene fiber cross sectional shapes on some structural/mechanical fiber properties and compressibility behaviour of plain knitted fabrics

Cited by 14 publications

References 15 publications

Multiscale characterisation of single synthetic fibres: Surface morphology and nanomechanical properties

Multiscale characterisation of single synthetic fibres: Surface morphology and nanomechanical properties

Effects of Erucamide on Fiber “Softness”: Linking Single-Fiber Crystal Structure and Mechanical Properties

Fibrous Aerogels for Solar Vapor Generation

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