2011
DOI: 10.1007/s10891-011-0510-z
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Rheological properties of concentrated solutions of cellulose and its mixtures with other polymers in orthophosphoric acid

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Cited by 8 publications
(6 citation statements)
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“…Despite the fact that aqueous phosphoric acid has been known as a direct cellulose solvent for a relatively long time, a technological process for the production of cellulose hydrate fibers using this acid under conditions that preclude the occurrence of intense polymer degradation has been first implemented on a universal pilot plant in the Laboratory for Cellulose Solutions and Products of Their Treatment at Institute for Physicochemical Problems of the Belorussian State University. Later, it was scaled up on a pilot production unit of OAO SvetlogorskKhimvolokno [12,13]. This process has indubitable advantages over the viscose method, in particular, a smaller number of intermediate stages and the absence of gaseous emissions and wastewater.…”
Section: Introductionmentioning
confidence: 99%
“…Despite the fact that aqueous phosphoric acid has been known as a direct cellulose solvent for a relatively long time, a technological process for the production of cellulose hydrate fibers using this acid under conditions that preclude the occurrence of intense polymer degradation has been first implemented on a universal pilot plant in the Laboratory for Cellulose Solutions and Products of Their Treatment at Institute for Physicochemical Problems of the Belorussian State University. Later, it was scaled up on a pilot production unit of OAO SvetlogorskKhimvolokno [12,13]. This process has indubitable advantages over the viscose method, in particular, a smaller number of intermediate stages and the absence of gaseous emissions and wastewater.…”
Section: Introductionmentioning
confidence: 99%
“…2 and 3 shows that model (2) describes fairly adequately the viscosity rheograms of acetic acid solutions of chitosan and permits determining with good accuracy the value of the highest Newtonian viscosity. (3,7,11,16,19), 10 (12, 17, 20, 23), 40 (8,13,21), and 70 mass% (4,9,14,22,25). The viscosity values are given in 10 -3 Pa·s, and the shear stresses and given in 10 -3 Pa. Figs.…”
mentioning
confidence: 99%
“…Because of the high adhesion energy, the thermal decomposition temperature of chitosan is lower that its melting temperature. Therefore, processing the given polymer into fi nished articles involves the stage of dissolution in organic or inorganic acids.It is known that the concentration mode is one of the major factors infl uencing many properties of polymer solutions and, consequently, determining the conditions of their processing into a fi nished product [6][7][8]. Such polymer materials as fi lms, fi bers, capsules, etc.…”
mentioning
confidence: 99%
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