100 Jahre Celluloseregeneratfaserstoffe – Geschichte und Perspektiven

Abstract

Die historische Entwicklung der Celluloseregeneratfasern wird beschrieben, wobei okonomische Aspekte sowie die gleichzeitig entstandenen Kenntnisse uber die Polymer-und Faserstruktur besondere Beachtung finden. Ausgehend von der Anpassungsfahigkeit der Celluloseregeneratfasern und der sich abzeichnenden vollig neuen Herstellungsverfahren wird auf die noch vorhandene und zunehmende Bedeutung der Cellulose als Rohstoff hingewiesen. 100 sen1 eoso1ion u3 peeenepuposannoii ye~mrnsoabaucmopus u nepcnetcmusbi OnncmaeTcR HcTopmecKoe p a 3~1 x~~e BOJIOKOH 113 pereHepHposaHHot qenn~oonos~. Hpn TOM oco6oe BHmaHne YReJIReTCH 3KOHOMHYeCKBM aCIleKTOM, a Taxme OHHOBPeMeHHO BOBHHKIIIHM Il03HaHHFIM 0 nOJIHMepHO& 11 BOJIOKHM-CTO& CTpYKTYpe. n C X 0 A H 113 IlpMCIlOCa6n11BaeMOCTH BOJIOKOH Pi3 pereHepMpOBaHH0~ qeJIJIIOJI03hI 11 IIpOHBHBLUHXCH cosepureHHo HOBHX ~~0~0 6 0~ noJryseHm y~a a b~s a e~c~ H a EiveroIqeecR R ~o s p a c~a m~q e e a~a u e~u e ~~J I J I I O J I O~~I KaHCbIpbH.

Chemical Engineering Laboratory Projects in Student Teams in Real Life and Transformed Online: Viscose Fiber Spinning and Characterization

“… 11 , 12 Although the basic principle is still the same as it was at the end of the 19th century, much progress has been made in the preparation of the alkali cellulose, the removal of undesired impurities, and the procedures to obtain spinning dopes suitable for the production of high-quality fibers. 13 − 15 Besides progress in fiber/film manufacturing, also the processes to recycle the used chemicals and remove them from the air have been improved significantly. 16 , 17 For instance, emissions by the largest viscose manufacturer in Europe, Lenzing AG, is at an extremely low level, which is a prerequisite considering that the plant site is located close to residential areas.…”

“…In general, the term rayon refers to a wide range of human-made cellulose fibers from different processes . Among those, the viscose process is nowadays the most important process to manufacture human-made wood-based fibers, with production volumes of several million tons per year. , Although the basic principle is still the same as it was at the end of the 19th century, much progress has been made in the preparation of the alkali cellulose, the removal of undesired impurities, and the procedures to obtain spinning dopes suitable for the production of high-quality fibers. − Besides progress in fiber/film manufacturing, also the processes to recycle the used chemicals and remove them from the air have been improved significantly. , For instance, emissions by the largest viscose manufacturer in Europe, Lenzing AG, is at an extremely low level, which is a prerequisite considering that the plant site is located close to residential areas . Since the demand for fibers is steadily growing and cotton plantations are more or less at the limit of potential land use, the only way to close the gap is to focus on wood-based fibers .…”