We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Mild synthesis of benzylated bamboo in LiCl/DMSO solution.
- Authors
Li, Ming-Fei; Sun, Shao-Ni; Xu, Feng; Sun, Run-Cang
- Abstract
Benzylated bamboo was mildly synthesized in nonaqueous medium without mercerization pretreatment. The ball-milled bamboo was firstly preswelled in lithium chloride/dimethyl sulfoxide (LiCl/DMSO) solution and then reacted with benzyl chloride in the presence of solid NaOH with varying molar ratios of benzyl chloride to OH groups of bamboo (1-4), reaction times (1-8 h), and temperatures (60-90°C). Benzylated bamboo products with yields from 51.1 to 106.9% and with degrees of substitution [DS, apparent value evaluated by Fourier transform infrared (FTIR) spectra] between 0.2 and 1.2 were synthesized. FTIR and 13C cross polarization/magic angle spinning nuclear magnetic resonance (CP/MAS NMR) spectroscopy confirmed the incorporation of benzyl groups into bamboo; SEM observations of the highly benzylated bamboo showed porous surface with small irregular slices ascribed to the disruption of intermolecular and intramolecular hydrogen bonds between cellulose. Because of the degradation of amorphous components, the crystallinity decreased negligibly after modification and the thermal stability increased slightly but was lower than that of cellulose. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
- Subjects
FOURIER transform infrared spectroscopy; LITHIUM chloride; CHLORIDES; DIMETHYL sulfoxide; NUCLEAR magnetic resonance
- Publication
Journal of Applied Polymer Science, 2012, Vol 125, Issue 1, p274
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.35551