Results 201 to 210 of about 3,695 (255)
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Biodegradation of oxidized regenerated cellulose
Carbohydrate Research, 1990The in vitro solubilization and degradation of regenerated cellulose was studied under conditions which approximate those found in vivo, when the material is used as an adhesion barrier to assist normal wound repair. Factors affecting solubilization which were examined included the effects of serum or plasma, and the presence of hydrolytic enzymes ...
S D, Dimitrijevich +4 more
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The Morphology of Regenerated Cellulose
Textile Research Journal, 1978The morphotogy of three different regenerated celluloses has been investigated using electron microscopy. Fortisan rayon consists entirely of microlihrils, ∼40-50 nm in width, which are usually aggregated into larger fibers. The sub structure of the microfibrils is a parallel array of protofibrils ∼1.5-4.0 nm in width.
Francis J. Kolpak, John Blackwell
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Trimethylsilyl cellulose as precursor to regenerated cellulose fiber
Journal of Applied Polymer Science, 1981AbstractTrimethylsilyl cellulose (TMSC) has been found to melt at 320–340°C in the absence of oxygen. When TMSC is prepared from chemical cellulose, using hexamethyldisilazane and a catalytic amount of chlorotrimethylsilane/pyridine in dimethylformamide, a thermoplastic material is obtained which may be melt spun into a fiber.
Geoffrey K. Cooper +2 more
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In vivo degradation of oxidized, regenerated cellulose
Carbohydrate Research, 1990Oxidized, regenerated cellulose (ORC) was surgically implanted on the uterine horns of rabbits, and its biodegradation was studied in vivo. Samples of peritoneal lavages, serum, and urine were collected during the degradation process and analyzed for carbohydrate components utilizing high-performance liquid chromatography with pulsed amperometric ...
S D, Dimitrijevich +6 more
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Cellulose: Its Regeneration in the Native Lattice
Science, 1974The regeneration of cellulose from solutions in 85 percent phosphoric acid into glycerol at 170°C resulted in its recovery wholly in the native or cellulose I lattice. Identification of the structure of the regenerated material is based on comparisons of its x-ray diffractogram and its Raman spectrum with those of the native fiber, cellulose II, and ...
R H, Atalla, S C, Nagel
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Oxidized Regenerated Cellulose for Hepatic Hemostasis
Archives of Surgery, 1963Introduction Oxidized regenerated cellulose is a relatively recent addition to the surgeon's armamentarium for hemostasis. Its hemostatic and absorbable qualities have been attested to by several authors in recent articles. 1-5 There have also been several articles describing its chemical nature, the mechanism of solubility in human tissues, and ...
G F, WRIGHT, R R, TYSON
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The preparation and study of regenerated cellulose fibers by cellulose carbamate pathway
International Journal of Biological Macromolecules, 2018In this work, using cotton pulps and urea as raw materials, cellulose carbamates (CCs) were successfully prepared by liquid-solid phase in the high-boiling aprotic and polar solvent (DMAc). Regenerated cellulose (RC) fibers were successfully spun from cellulose carbamate in a NaOH aqueous solution by wet spinning on a conventional viscose filament ...
Yun, Teng +3 more
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Regenerated cellulose-silk fibroin blends fibers
International Journal of Biological Macromolecules, 2008Fibers made of cellulose and silk fibroin at different composition were wet spun from solutions by using N-methylmorpholine N-oxide hydrates (NMMO/H(2)O) as solvent and ethanol as coagulant. Different spinning conditions were used. The fibers were characterized by different techniques: FTIR-Raman, scanning electron microscopy, wide-angle x-ray ...
MARSANO, ENRICO +3 more
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Regenerated Cellulosic Fibers and Their Implications on Sustainability
2014This chapter discusses the present scenario and market trend of regenerated cellulosic fibers, and the properties of principal fibers existing in the market as well as some new fibers recently developed and yet to be explored. Production technologies of these fibers are discussed and their potential applications are presented.
Rana, Sohel +3 more
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Regenerated cellulose in elastomer compounds
European Polymer Journal, 1983Abstract Natural rubber vulcanizates showed an unexpected reinforcement effect with regenerated cellulose as filler, with maximum tensile properties at 15 phr cellulose. These rubber compounds were compared with analogous mixtures containing SRF black, and a similar system in which the elastomer was SBR.
E.B. Mano, R.C.R. Nunes
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