BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO
Ball-milled bamboo was pre-swelled with a cold aqueous solution of NaOH and urea, and then reacted directly with benzyl chloride to synthesize benzylated bamboo. The effects of the molar ratio of benzyl chloride to OH groups in the bamboo (1 to 4), the reaction temperature (70 to 110 °C), and the re...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2012-02-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_2_1876_Benzylation_Char_Cold_NaOH_urea_Cotton/1471 |
| _version_ | 1818444265830744064 |
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| author | Ming-Fei Li, Shao-Ni Sun, Feng Xu, Runcang Sun |
| author_facet | Ming-Fei Li, Shao-Ni Sun, Feng Xu, Runcang Sun |
| author_sort | Ming-Fei Li, |
| collection | DOAJ |
| description | Ball-milled bamboo was pre-swelled with a cold aqueous solution of NaOH and urea, and then reacted directly with benzyl chloride to synthesize benzylated bamboo. The effects of the molar ratio of benzyl chloride to OH groups in the bamboo (1 to 4), the reaction temperature (70 to 110 °C), and the reaction time (2 to 8 h) on both the product yield and the degree of substitution (DS) were evaluated. Yields between 67.6 and 94.0% and DS between 0.31 and 0.74 of the benzylated bamboo were obtained under such conditions. The incorporation of benzyl groups was evidenced by FT-IR and CP/MAS 13C-NMR spectroscopy. It was found that the crystalline structure of the native ball-milled bamboo was markedly damaged after modification. In addition, the benzylated bamboo was subjected to thermal degradation at a high temperature with an increase in substitution. It was suggested that the benzylated bamboo with a low crystallinity as well as large non-polar groups is promising as a filler for use in the composite material industry. |
| first_indexed | 2024-12-14T19:13:12Z |
| format | Article |
| id | doaj.art-1f33d54627124fd6bcff9a2ad57ed9f2 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-14T19:13:12Z |
| publishDate | 2012-02-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-1f33d54627124fd6bcff9a2ad57ed9f22022-12-21T22:50:40ZengNorth Carolina State UniversityBioResources1930-21262012-02-017218761890BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOOMing-Fei Li,Shao-Ni Sun,Feng Xu,Runcang SunBall-milled bamboo was pre-swelled with a cold aqueous solution of NaOH and urea, and then reacted directly with benzyl chloride to synthesize benzylated bamboo. The effects of the molar ratio of benzyl chloride to OH groups in the bamboo (1 to 4), the reaction temperature (70 to 110 °C), and the reaction time (2 to 8 h) on both the product yield and the degree of substitution (DS) were evaluated. Yields between 67.6 and 94.0% and DS between 0.31 and 0.74 of the benzylated bamboo were obtained under such conditions. The incorporation of benzyl groups was evidenced by FT-IR and CP/MAS 13C-NMR spectroscopy. It was found that the crystalline structure of the native ball-milled bamboo was markedly damaged after modification. In addition, the benzylated bamboo was subjected to thermal degradation at a high temperature with an increase in substitution. It was suggested that the benzylated bamboo with a low crystallinity as well as large non-polar groups is promising as a filler for use in the composite material industry.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_2_1876_Benzylation_Char_Cold_NaOH_urea_Cotton/1471BenzylationEtherificationNaOH/urea aqueous solutionNMRThermal stability |
| spellingShingle | Ming-Fei Li, Shao-Ni Sun, Feng Xu, Runcang Sun BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO BioResources Benzylation Etherification NaOH/urea aqueous solution NMR Thermal stability |
| title | BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO |
| title_full | BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO |
| title_fullStr | BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO |
| title_full_unstemmed | BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO |
| title_short | BENZYLATION AND CHARACTERIZATION OF COLD NAOH/UREA PRE-SWELLED BAMBOO |
| title_sort | benzylation and characterization of cold naoh urea pre swelled bamboo |
| topic | Benzylation Etherification NaOH/urea aqueous solution NMR Thermal stability |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_07_2_1876_Benzylation_Char_Cold_NaOH_urea_Cotton/1471 |
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