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| Content Provider | Springer Nature Link |
|---|---|
| Author | Li, Lin Zhao, Shuai Zhang, Jin Zhang, Zhen Xiu Hu, Hongqi Xin, Zhenxiang Kim, Jin Kuk |
| Copyright Year | 2013 |
| Abstract | A series of microcrystalline cellulose samples were reacted with catalytic amounts of 2, 2, 6, 6-tetramethyl-1-piperidine oxoammonium salt (TEMPO), sodium hypochlorite and sodium bromide in Na$_{2}$CO$_{3}$/NaHCO$_{3}$ buffer solution at different temperature (15 °C, 20 °C, 30 °C, 35 °C, 40 °C, 50 °C). The oxidation procedures included first and second oxidation. The first oxidation was a classical process for activating cellulose for the second oxidation. A substantial increase in the reactivity of the second oxidation cellulose samples was observed in comparison to those in the first oxidation and a relationship between oxidation procedures and accessibility of cellulose primary hydroxyl groups was directly established. For the characterization, we have used several methods, mainly XRD, FTIR. In all samples, the partial primary alcohol groups were selectively oxidized into carboxyl groups. The reaction during the first oxidation procedure mainly occurs in disordered regions of MCC and crystal surface. But the second oxidation procedure took place not only in disordered regions and crystal surface but inside crystalline region of cellulose I. |
| Starting Page | 352 |
| Ending Page | 357 |
| Page Count | 6 |
| File Format | |
| ISSN | 12299197 |
| Journal | Fibers and Polymers |
| Volume Number | 14 |
| Issue Number | 3 |
| e-ISSN | 18750052 |
| Language | English |
| Publisher | The Korean Fiber Society |
| Publisher Date | 2013-04-06 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Microcrystalline cellulose Oxidation Crystalline region Polymer Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering Polymers and Plastics |
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