Highly porous regenerated cellulose hydrogel and aerogel prepared from hydrothermal synthesized cellulose carbamate

被引：41

作者：

Gan, Sinyee ^{[1
]}

Zakaria, Sarani ^{[1
]}

Chia, Chin Hua ^{[1
]}

Chen, Ruey Shan ^{[1
]}

Ellis, Amanda V. ^{[2
]}

Kaco, Hatika ^{[1
]}

机构：

[1] Univ Kebangsaan Malaysia, Sch Appl Phys, Fac Sci & Technol, Bangi, Selangor, Malaysia

[2] Univ Melbourne, Dept Chem Engn, Parkville, Vic, Australia

来源：

PLOS ONE | 2017年 / 12卷 / 03期

关键词：

D O I：

10.1371/journal.pone.0173743

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Here, a stable derivative of cellulose, called cellulose carbamate (CC), was produced from Kenaf (Hibiscus cannabinus) core pulp (KCP) and urea with the aid of a hydrothermal method. Further investigation was carried out for the amount of nitrogen yielded in CC as different urea concentrations were applied to react with cellulose. The effect of nitrogen concentration of CC on its solubility in a urea-alkaline system was also studied. Regenerated cellulose products (hydrogels and aerogels) were fabricated through the rapid dissolution of CC in a urea-alkaline system. The morphology of the regenerated cellulose products was viewed under Field emission scanning electron microscope (FESEM). The transformation of allomorphs in regenerated cellulose products was examined by X-ray diffraction (XRD). The transparency of regenerated cellulose products was determined by Ultraviolet-visible (UV-Vis) spectrophotometer. The degree of swelling (DS) of regenerated cellulose products was also evaluated. This investigation provides a simple and efficient procedure of CC determination which is useful in producing regenerated CC products.

引用

页数：13

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