Agriculture Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, PR China; National Center of Important Tropical Crops Engineering and Technology Research, Haikou 571101, PR China.
Agriculture Products Processing Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang 524001, PR China; College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
Carbohydr Polym. 2014 Nov 26;113:388-93. doi: 10.1016/j.carbpol.2014.06.085. Epub 2014 Jul 11.
Nanocelluloses were prepared from sugarcane bagasse celluloses by dynamic high pressure microfluidization (DHPM), aiming at achieving a homogeneous isolation through the controlling of shearing force and pressure within a microenvironment. In the DHPM process, the homogeneous cellulose solution passed through chambers at a higher pressure in fewer cycles, compared with the high pressure homogenization (HPH) process. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) demonstrated that entangled network structures of celluloses were well dispersed in the microenvironment, which provided proper shearing forces and pressure to fracture the hydrogen bonds. Gel permeation chromatography (GPC), CP/MAS (13)C NMR and Fourier transform infrared spectroscopy (FT-IR) measurements suggested that intra-molecular hydrogen bonds were maintained. These nanocelluloses of smaller particle size, good dispersion and lower thermal stability will have great potential to be applied in electronics devices, electrochemistry, medicine, and package and printing industry.
通过动态高压微射流（DHPM）从甘蔗渣纤维素中制备纳米纤维素，旨在通过控制微环境中的剪切力和压力实现均匀分离。在 DHPM 过程中，与高压均化（HPH）过程相比，均匀的纤维素溶液在更高的压力下通过腔室的次数更少。X 射线衍射（XRD）和 X 射线光电子能谱（XPS）表明，纤维素的缠结网络结构在微环境中得到了很好的分散，为断裂氢键提供了适当的剪切力和压力。凝胶渗透色谱（GPC）、CP/MAS（13）C NMR 和傅里叶变换红外光谱（FT-IR）测量表明，分子内氢键得以维持。这些具有较小粒径、良好分散性和较低热稳定性的纳米纤维素在电子设备、电化学、医学、包装印刷等领域具有巨大的应用潜力。
