Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (19)
  • Open Access

    ARTICLE

    Nanomechanical Properties of Electrospun PLGA Nanofibers

    X. Xin1, M. Hussain1, J. Mao1

    Molecular & Cellular Biomechanics, Vol.3, No.4, pp. 187-188, 2006, DOI:10.32604/mcb.2006.003.187

    Abstract This article has no abstract. More >

  • Open Access

    ARTICLE

    Lightweight Biobased Polyurethane Nanocomposite Foams Reinforced with Pineapple Leaf Nanofibers (PLNFs)

    Xiaojian Zhou1,2, Hui Wang1, Jun Zhang2, Zhifeng Zheng1, Guanben Du1,2,*

    Journal of Renewable Materials, Vol.6, No.1, pp. 68-74, 2018, DOI:10.7569/JRM.2017.634150

    Abstract Pineapple leaf nanofibers (PLNFs) extracted from pineapple leaf fiber were used for reinforcing biobased polyurethane foam (BPU). The dispersion performance of PLNF in the foaming mixture system, nanocomposite foaming behavior, cell morphology, cell size, density, compressive strength and dimensional stability were investigated. The viscosity of the mixtures increased with increasing the PLNF content. The addition of a tiny amount of PLNF did not influence the exothermic temperature of the foam system, but reduced the expansion and gel time of the nanocomposite foams. This reduced time was found to increase the production efficiency. Scanning electron microscopy (SEM) images showed that the… More >

  • Open Access

    ABSTRACT

    Molecular Dynamics Simulations of Carbon Nanotubes Cross-Bonding by Proton Irradiation

    N. J. Lee, C.R. Welch1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.13, No.1, pp. 11-12, 2009, DOI:10.3970/icces.2009.013.011

    Abstract Carbon nanotubes have significant potential as the basis for super infrastructure material. The shear modulus of carbon nanotube ensembles is relatively low, comparable to graphite, as the carbon nanotubes interact via weak van der Waals forces. Unmodified, their intermolecular interactions are insufficient to take full advantage of the extraordinarily high strengths predicted for carbon nanotube-based fibers. Thus, a key to their use in high-strength materials is developing strong bonds between these molecules. In this study, we examine the potential development of covalent bonds between carbon nanotube pairs cross-bonded by proton bombardment using molecular dynamics simulation. Covalent bond formation between aligned… More >

  • Open Access

    ABSTRACT

    Nanocomposite Adhesive Bonding Using Graphite Nanofibers

    L. Roy Xu1, Charles M. Lukehart2, Lang Li2, Huacheng Kuai1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.3, No.1, pp. 9-14, 2007, DOI:10.3970/icces.2007.003.009

    Abstract Graphitic carbon nanofibers were used to reinforce epoxy resin to form nanocomposite adhesive bonding. Good dispersion and polymer wetting of the GCNF component is evident on the nanoscale. Tensile and shear joint strength measurements were conducted for metal-metal and polymer-polymer joints using pure epoxy and nanocomposite bonding. Very little bonding strength increase, or some bonding strength decrease, was measured. More >

  • Open Access

    ARTICLE

    Green Nanocomposites Made With Polyvinyl Alcohol and Cellulose Nanofibers Isolated From Recycled Paper

    Le Van Hai1,2, Lindong Zhai1, Hyun Chan Kim1, Jung Woong Kim1, Jaehwan Kim1,*

    Journal of Renewable Materials, Vol.7, No.7, pp. 621-629, 2019, DOI:10.32604/jrm.2019.06466

    Abstract This paper reports green nanocomposites made by blending polyvinyl alcohol (PVA) with cellulose nanofiber (CNF) isolated from recycled deinked copy/printing paper (DIP). The reinforcement effect of DIPCNF in the nanocomposites is compared with other CNFs isolated from native cotton and hardwood by means of TEMPO-oxidation. The prepared PVA-CNF nanocomposites are characterized in terms of morphology, chemical interaction, structural, thermal and mechanical properties. X-ray diffraction and Fourier transform infrared spectroscopy confirm the reinforcing ability of cellulose nanofibers into PVA. By blending CNFs into PVA matrix, the thermal stability of the nanocomposites is improved and DIPCNF shows similar enhancement effect with COCNF… More >

  • Open Access

    ARTICLE

    Electromagnetic Characterization of Recyclable Polymer Nanofibers Based on PSU/Carbonyl Iron

    Daniel Cônsoli Silveira1,*, Tiago Teixeira da Silva Braga1, Daniel Molina Gil1, Newton Adriano dos Santos Gomes2, Lilia Müller Guerrini3, Edson Cocchieri Botelho1

    Journal of Renewable Materials, Vol.7, No.3, pp. 279-287, 2019, DOI:10.32604/jrm.2019.01834

    Abstract This study investigated and defined the optimal processing parameters for the electrospinning of polysulfone polymer solutions with N,N-dimethylacetamide. Variation of parameters such as solute concentration, electrical voltage, and working distance were correlated with the quality of the obtained nanofibers using morphological characterization via scanning electron microscopy (SEM). Carbonyl iron additive was dispersed in the polymer solutions, using ultrasonic tip, and the material processed via electrospinning with aforementioned parameters defined. Nanofibers with the property of interaction with electromagnetic waves were obtained. The dispersion of different concentrations of the additive and electromagnetic characterizations in the X-band of microwaves (8.2 and 12.4 GHz),… More >

  • Open Access

    ARTICLE

    Vapor and Pressure Sensors Based on Cellulose Nanofibers and Carbon Nanotubes Aerogel with Thermoelectric Properties

    Rajendran Muthuraj, Abhishek Sachan, Mickael Castro*, Jean-François Feller, Bastien Seantier*, Yves Grohens

    Journal of Renewable Materials, Vol.6, No.3, pp. 277-287, 2018, DOI:10.7569/JRM.2017.634182

    Abstract In this work, thermally insulating and electrically conductive aerogels were prepared from cellulose nanofibers (CNF) and carbon nanotubes (CNTs) by environmentally friendly freeze-drying process. The thermal conductivity of neat CNF aerogel is 24 mW/(m·K) with a density of 0.025 g/cm3. With the addition of CNTs into CNF aerogel, the electrical conductivity was significantly increased while the thermal conductivity was increased to 38 mW/(m·K). Due to these interesting properties, the Seebeck coefficient and the figure of merit (ZT) of the CNF/CNTs aerogels were measured and showed that CNF/CNTs aerogel thermoelectric properties can be improved. The compressibility and electrical resistance of the… More >

  • Open Access

    ARTICLE

    In Situ Synthesis of Cuprous Oxide/Cellulose Nanofibers Gel and Antibacterial Properties

    Ying Hu1,2, Qinfei Ke1, Zhe Li2, Wanli Han3, Zhiyong Yan2,*

    CMC-Computers, Materials & Continua, Vol.56, No.3, pp. 517-527, 2018, DOI: 10.3970/cmc.2018.03608

    Abstract Cellulose nanofibers were synthesized by acetobacter xylinum (xylinum 1.1812). The cellulose nanofibers with 30-90 nm width constructed three-dimension network gel, which could be used as a wound dressing since it can provide moist environment to a wound. However, cellulose nanofibers have no antimicrobial activity to prevent wound infection. To achieve antimicrobial activity, the cellulose nanofibers can load cuprous oxide (Cu2O) particles on the surface. The cuprous oxide is a kind of safe antibacterial material. The copper ions can be reduced into cuprous oxides by reducing agents such as glucose, N2H4 and sodium hypophosphite. The cellulose nanofibers network gel was soaked… More >

  • Open Access

    ARTICLE

    Stress Distribution in an Infinite Body Containing Two Neighboring Locally Curved Nanofibers

    Surkay D. Akbarov1,2, Resat Kosker3, Nihan T. Cinar3

    CMC-Computers, Materials & Continua, Vol.21, No.2, pp. 119-146, 2011, DOI:10.3970/cmc.2011.021.119

    Abstract In the present paper, the stress distribution in an infinite elastic body containing two neighboring nanofibers is studied. It is assumed that the midlines of the fibers are in the same plane. With respect to the location of the fibers according to each other the co-phase and anti-phase curving cases are considered. At infinity uniformly distributed normal forces act in the direction of the nanofibers, location. The investigations are carried out in the framework of the piecewise homogeneous body model with the use of the three-dimensional geometrically non-linear exact equations of the theory of elasticity. The normal and shear self-equilibrated… More >

Displaying 11-20 on page 2 of 19. Per Page