Summary
Samenvatting Kunstvezels op basis van cellulose
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Kunstvezels op basis van cellulose
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LES 7 - 19/11/2021KUNSTVEZELS OBV
CELLULOSE DEEL 2
Refibra
Voorgesteld door Lenzing op Première Vision 2017
Tencel + 20% aan gerecycleerde katoen aan toegevoegd (cellulosebron)
Ecologische productie:
recyclage van pre-consumer katoenafval op moleculair vlak
bio-energie
Lyocell-spinsysteem
(Recente evolutie: 70% Tencel + 5% post-consumer afval + 25% pre-consumer afval)
Lyohemp
Bomen:
Duurt lang voor dat het klaar is voor cellulosewinst
Slechts 40% cellulose
Alternatief: Hennep!
Minder lignine
Gecertificeerde bio-teelt
Nieuwe processen voor oogst- en bastverwijdering
Lyocell-spinproces
Cupro
Cellulosewinning uit naaldhout
LES 7 - 19/11/2021 KUNSTVEZELS OBV CELLULOSE DEEL 2 1
, Bereid met cuprammonium ☹ (koper en ammoniak: giftige blauwe vloeistof)
Trechternatspinmethode → hoge strekking
Toepassing: Bemberg 'zijde' voeringstof, zomerjurken, bloezen
Eigenschappen zoals
CV
LES 7 - 19/11/2021 KUNSTVEZELS OBV CELLULOSE DEEL 2 2
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