Results 201 to 210 of about 20,473 (262)
Curling Suppression by Adhesive Tape Enables Direct Processing of Thin Polymer Strips
Polymer Engineering &Science, EarlyView.Machining‐based approch for processing of polymer strip: A simple adhesive tape applied to the workpiece surface suppresses severe chip curling, enabling the single‐step production of flat, straight polymer strips. ABSTRACT Thin polymer strips and films are critical components in flexible electronics, packaging, and energy storage systems, yet their ...
Debapriya Pinaki Mohanty +3 more
wiley +1 more source
Polymer Engineering &Science, EarlyView.Cellulose nanocrystals extracted from Mauritia flexuosa petiole were combined with MCM‐41 mesoporous silica to create a diclofenac‐loaded hybrid nanocomposite. Incorporation into electrospun PVA scaffolds enabled controlled diclofenac release and high cell viability, highlighting their potential for localized drug delivery.
Karoliny V. Barbosa +11 more
wiley +1 more source
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Grafting of polypropylene fibers. II. Electrokinetic properties of grafted polypropylene fibers
Journal of Applied Polymer Science, 1987Electrokinetic properties of methacrylic acid- and acrylonitrile-grafted polypropylene fibers measured in the presence of cationic dyes are reported. The zeta potential of polypropylene fibers decreases, and the surface charge density along with surface conductivity increases as the concentration of the dyes in the streaming solution increases.
H. T. Lokhande +4 more
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Journal of Macromolecular Science, Part A, 1998
The preparation, and especially the dyeability of blended fibers polypropylene and terpolymer acrylonitrile-butadiene-styrene and/or polypropylene and polystyrene, respectively are presented in this paper. Modified polypropylene fibers fix the dyestuffs much better and have lower tenacity according to the amount of the additive.
M. Kristofic +3 more
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The preparation, and especially the dyeability of blended fibers polypropylene and terpolymer acrylonitrile-butadiene-styrene and/or polypropylene and polystyrene, respectively are presented in this paper. Modified polypropylene fibers fix the dyestuffs much better and have lower tenacity according to the amount of the additive.
M. Kristofic +3 more
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Failure of polypropylene fibers
Fibre Chemistry, 1984A quantitative definition of the highly elastic deformation built up in extension of polypropylene fiber has been proposed.
V. D. Fikhman +2 more
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Fractographic characterization of isotactic polypropylene fibers
Microscopy Research and Technique, 2020AbstractIn this article we present an opto‐thermo‐mechanical characterization of isotactic polypropylene monofilament during failure by fracture. The digital photoelasticity, the two‐beam Pluta polarising interference microscope and the computed tomography are used to provide quantitative data and visual models of the fracture regions of isotactic ...
Taha Z. N. Sokkar +3 more
openaire +2 more sources
1999
Special types of polypropylene (PP) fibers were developed in order to widen their application. The special fibers may be ranged into the following main groups: • multicomponent fibers containing at least two different polymers; • fibers with changing cross-section geometry (profiled and partly filled); • bioactive fibers.
Martin Jambrich, Anton Marcinčin
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Special types of polypropylene (PP) fibers were developed in order to widen their application. The special fibers may be ranged into the following main groups: • multicomponent fibers containing at least two different polymers; • fibers with changing cross-section geometry (profiled and partly filled); • bioactive fibers.
Martin Jambrich, Anton Marcinčin
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Polymorphism in polypropylene fibers
Journal of Applied Polymer Science, 2003AbstractThe structure of polypropylene fibers formed by different spinning conditions was studied. The investigations were carried out using wide‐angle X‐ray scattering (WAXS) and small‐angle X‐ray scattering (SAXS) methods. It was stated that in noncolored fibers the mesophase and the monoclinic α forms were formed.
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Effects of reinforcing fibers on the crystallization of polypropylene
Polymer Engineering & Science, 2000AbstractThe effects of the incorporation of different types of fibers on the crystallization kinetics and thermodynamics of isotactic polypropylene (iPP) are investigated. The study is mainly performed by thermal analysis, both in isothermal and constant cooling rate conditions, utilizing differential scanning calorimetry (DSC).
Lopez Manchado M. A. +3 more
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The Coloration of Polypropylene Fibers
1987Polypropylene, as produced, does not possess properties normally attributed to a fiber-forming polymer. Despite a relatively low melting point, it is not stable below melt temperatures and will degrade in UV light at room temperature, unless stabilizers are added.
Marvin Wishman +2 more
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