Dissolution of cellulose with NMMO by microwave heating


DOĞAN H., Hilmioglu N.

CARBOHYDRATE POLYMERS, cilt.75, ss.90-94, 2009 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 75 Konu: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.carbpol.2008.06.014
  • Dergi Adı: CARBOHYDRATE POLYMERS
  • Sayfa Sayıları: ss.90-94

Özet

Environmentally friendly microwave heating process was applied to the dissolution of cellulose in N-methylmorpholine-N-oxide (NMMO) with 105-490 W and 2450 MHz microwave energy until the dissolution completed. Microwave heating caused the decrease in the dissolution time and energy consumption. Cellulose/NMMO/water solutions with different cellulose concentrations were converted to the membrane to measure the crystallinity and degree of polymerization. It was shown that microwave heating with the power of 210 W is an alternative heating system for dissolution of cellulose in NMMO. The membranes obtained with two different heating methods showed the same crystallinity and degree of polymerization. As a result, microwave heating has an advantage in shortening reaction times, compared to conventional heating. (C) 2008 Elsevier Ltd. All rights reserved.