Some Studies on Mudar Fibers

Sakthivel, J. C.; Mukhopadhyay, Samrat; Palanisamy, Nachimuthu

doi:10.1177/1528083705053390

Cited by 45 publications

(30 citation statements)

References 3 publications

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“…However, milkweed floss has been reported to have lengths up to 30 mm. 7,16 Milkweed floss also has a low percentage crystallinity compared to jute, linen and other cellulose fibers. However, the low cellulose content and percentage crystallinity should contribute to the low density of the floss fibers.…”

Section: Fiber Characterizationmentioning

confidence: 99%

“…Previous studies on characterizing various varieties of milkweed fibers have also reported similar composition of cellulose and lignin. 7,16 Milkweed floss has relatively short lengths compared to any other natural cellulose fibers in commercial use. The short length of the fibers makes it difficult for them to be processed as more common fibers and would also result in composites with inferior mechanical properties if all other fiber properties remain the same.…”

Section: Fiber Characterizationmentioning

confidence: 99%

“…6 Milkweed floss is a unique natural fiber with a low density of about 0.9 g cm −3 due to the presence of a completely hollow center. 7,8 No other known natural cellulose fiber has such a low density or such a hollow center. Because of its low density, milkweed floss has been used as filling material in jackets to replace goose down.…”

Section: Introductionmentioning

confidence: 99%

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Non‐traditional lightweight polypropylene composites reinforced with milkweed floss

Reddy

Yang

2010

Polymer International

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Lightweight composites are preferred for automotive applications due to the weight restrictions and also due to the presence of inherent voids that can enhance the sound absorption of these composites. The density of the reinforcing materials plays a crucial role in such lightweight composites. Milkweed is a unique natural cellulose fiber that has a completely hollow center and low density (0.9 g cm−3) unlike any other natural cellulose fiber. The low density of milkweed fibers will allow the incorporation of higher amounts of fiber per unit weight of a composite, which is expected to lead to lightweight composites with better properties. Polypropylene (PP) composites reinforced with milkweed fibers have much better flexural and tensile properties than similar PP composites reinforced with kenaf fibers. Milkweed fiber‐reinforced composites have much higher strength but are stiffer than kenaf fiber‐reinforced PP composites. Increasing the proportion of milkweed in the composites from 35 to 50% increases the flexural strength but decreases the tensile strength. The low density of milkweed fibers allows the incorporation of higher amounts of fibers per unit weight of the composites and hence provides better properties compared to composites reinforced with common cellulose fibers with relatively high density. This research shows that low‐density reinforcing materials can more efficiently reinforce lightweight composites. Copyright © 2010 Society of Chemical Industry

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Section: Fiber Characterizationmentioning

confidence: 99%

Section: Fiber Characterizationmentioning

confidence: 99%

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Non‐traditional lightweight polypropylene composites reinforced with milkweed floss

Reddy

Yang

2010

Polymer International

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“…First, the milkweed floss is a unique natural cellulose fiber that has a low density due to the presence of a completely hollow center. [9][10][11] No other known natural cellulose fiber has such an overall low density. 9 Consequently it will have a very low overall thermal conductivity.…”

Section: Sample Structurementioning

confidence: 99%

Temperature dependent behavior of thermal conductivity of sub-5 nm Ir film: Defect-electron scattering quantified by residual thermal resistivity

Cheng

et al. 2015

Journal of Applied Physics

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By studying the temperature-dependent behavior (300 K down to 43 K) of electron thermal conductivity () in a 3.2 nm-thin Ir film, we quantify the extremely confined defect-electron scatterings and isolate the intrinsic phonon-electron scattering that is shared by the bulk Ir. At low temperatures below 50 K,  of the film has almost two orders of magnitude reduction from that of bulk Ir. The film has ∂/∂T>0 while the bulk Ir has ∂/∂T <0. We introduce a unified thermal resistivity (=T/) to interpret these completely different ~T relations. It is found that the film and the bulk Ir share a very similar ~T trend while they have a different residual part (Θ 0 ) at 0 K limit:  0~0 for the bulk Ir, and  0 =5.5 mK 2 /W for the film. The Ir film and the bulk Ir have very close ∂Θ/∂T (75 to 290 K): 6.33×10 -3 mK/W for the film and 7.62×10 -3 mK/W for the bulk Ir. This strongly confirms the similar phonon-electron scattering in them. Therefore, the residual thermal resistivity provides an unprecedented way to quantitatively evaluating defectelectron scattering ( 0 ) in heat conduction. Moreover, the interfacial thermal conductance across the grain boundaries is found larger than that of Al/Cu interface, and its value is proportional to a Corresponding author. Email: xwang3@iastate.edu, Tel: 515-294-2085, Fax: 515-294-3261 2 temperature, largely due to the electron's specific heat. A unified interfacial thermal conductance is also defined and firmly proves this relation. Additionally, the electron reflection coefficient is found to be large (88%) and almost temperature independent.3

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“…The C. procera bast fibers have been evaluated for their fiber characteristics in making cloth at a 1:1 ratio with cotton fiber (Varshney and Bhoi, 1988). The yarn has enough potential in natural fiber-reinforced composites and other industrial textile applications (Sakthivel et al 2005). The floss may also substitute cotton wool for surgical or stuffing purposes (Eisikowitch, 1986).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization and transcriptome profiling of expansin genes isolated from Calotropis procera fibers

Cheema

Bashir

Khatoon

et al. 2010

Electron Journ of Biotechnol

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The Calotropis procera seed fibers provide an excellent model system to study the genes involved in fiber elongation, fineness and strength. Expansins constitute one of the important gene families involved in plant cell expansion and other cell wall modification processes. Four homologs of Expansin A gene i.e. CpEXPA1, CpEXPA2, CpEXPA3 and CpEXPA4 were isolated from the cDNA library obtained from fast growing Calotropis procera fibers. These homologs represented typical Expansin A family. Each of them had two conserved domains including GH45 like domain and the putative polysaccharide binding domain. The deduced amino acid sequences of the homologs indicated three conserved motifs: i) eight cysteine residues at N-terminus, ii) four tryptophan residues at C-terminus and iii) a Histidine-Phenylalanine-Aspartate motif in the center of the sequence. The presence of N-terminal signal peptide consisting of hydrophobic amino acids and a transmembrane region in all these expansin isoforms suggests their cotranslational insertion into the endoplasmic reticulum and then transportation to the cell wall by secretory pathway. The relative quantification of the four expansins in root, stem, fiber and leave tissues indicated that the transcripts of CpEXPA1, CpEXPA2, CpEXPA3 and CpEXPA4 are variably transcribed in these tissues. The lowest transcription of all the four Expansin A isoforms was observed in elongating roots indicating that root tissue might be having specific expansins other than those confined to air grown organs.

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Some Studies on Mudar Fibers

Cited by 45 publications

References 3 publications

Non‐traditional lightweight polypropylene composites reinforced with milkweed floss

Non‐traditional lightweight polypropylene composites reinforced with milkweed floss

Temperature dependent behavior of thermal conductivity of sub-5 nm Ir film: Defect-electron scattering quantified by residual thermal resistivity

Molecular characterization and transcriptome profiling of expansin genes isolated from Calotropis procera fibers

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