scholarly journals 2D boron nitride nanosheets (BNNS) prepared by high-pressure homogenisation: structure and morphology

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19469-19477 ◽  
Author(s):  
Valentina Guerra ◽  
Chaoying Wan ◽  
Volkan Degirmenci ◽  
Jeremy Sloan ◽  
Dimitris Presvytis ◽  
...  
Keyword(s):  
High Pressure ◽  
Boron Nitride ◽  
High Pressure Homogenization ◽  
Structure And Morphology ◽  
Boron Nitride Nanosheets ◽  
Homogenization Process

Polycrystalline boron nitride nano-sheets (BNNS) were prepared via a scalable high-pressure homogenization process.

scholarly journals Acetylation improves thermal stability and transmittance in FOLED substrates based on nanocellulose films

RSC Advances ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 3619-3625 ◽  
Author(s):  
Shuang Yang ◽  
Qiuxia Xie ◽  
Xiuyu Liu ◽  
Min Wu ◽  
Shuangfei Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Pressure ◽  
Nanofibrillated Cellulose ◽  
High Pressure Homogenization ◽  
Mechanical Grinding ◽  
Homogenization Process ◽  
Softwood Pulp

Bleached softwood pulp was used to prepare nanofibrillated cellulose (NFC) by mechanical grinding and a high-pressure homogenization process.

Superhydrophobicity of polyvinylidene fluoride induced by integrating liquid-exfoliated hexagonal boron nitride nanosheets

2019 ◽  
Vol 32 (1) ◽  
pp. 73-82 ◽  
Author(s):  
Lulu An ◽  
Changning Bai ◽  
Yongqing Bai ◽  
Bin Zhang ◽  
Yuanlie Yu ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Boron Nitride ◽  
Polyvinylidene Fluoride ◽  
Hexagonal Boron Nitride ◽  
Waste Water Treatment ◽  
Preparation Process ◽  
Structure And Morphology ◽  
Boron Nitride Nanosheets ◽  
Morphology Changes

The superhydrophobicity of polyvinylidene fluoride (PVDF) membranes can be achieved by adding a small amount of hexagonal boron nitride nanosheets ( h-BNNSs) during the preparation process. The h-BNNSs can be fabricated by two steps of facile ultrasonication of commercial h-BN powders in water and subsequent centrifugation process. The introduction of a small amount of h-BNNSs into PVDF will result in structure and morphology changes of final PVDF membranes. The changes of the structure and morphology can significantly reduce the surface wettability of PVDF membranes, even generating superhydrophobicity. However, the superoleophilicity of PVDF membranes is well kept, which is not influenced by the introduction of h-BNNSs. The excellent superhydrophobicity and superoleophilicity make these porous h-BNNS/PVDF composites to be promising candidates for separating oil and water as membranes in practical oil-polluted waste water treatment.

scholarly journals Enzymatic Coupled Mechanical Defibrillation Process for the Production of Corn (Zea Mays) Cob Microfibrillated Cellulose: Preparation, Characterization and Evaluation as Pickering Emulsifier for Oil-In-Water Emulsion

2021 ◽  
Author(s):  
Teck-Kim Tang ◽  
Yee-Ying Lee ◽  
Eng-Tong Phuah ◽  
Chin-Ping Tan ◽  
Sivaruby Kanagaratnam ◽  
...  
Keyword(s):  
High Pressure ◽  
Shear Viscosity ◽  
Microfibrillated Cellulose ◽  
High Pressure Homogenization ◽  
Corn Cob ◽  
Water Emulsion ◽  
Homogenization Process ◽  
Oil In Water ◽  
High Pressure Homogenizer ◽  
Oil In Water Emulsion

Abstract Microfibrillated cellulose (MFC) is a type of nanocellulose having multiple functionalities. Typically, MFC was produced from mechanical high pressure homogenization process. However, this process is energy intensive and the fibrous nature of MFC often causes instrument blockage. The present study aims to utilize endoglucanse enzyme as environmentally friendly approach to pretreat fiber structure prior to undergoing mechanical defibrillation for the production of MFC from corn cob. Alkaline and bleached pretreated corn cob was treated with endoglucanase Fibercare R from 0% to 2.5% before passing through high pressure homogenizer. It was found that incorporation of 0.02% of endoglucanase was sufficient to soften the corn cob cellulose and further prevent the blockage of homogenizer. Subsequently, the 0.02% endoglucanse treated corn cob was passed through different cycles of homogenization from 0 cycle to 10 cycle for MFC production. It was observed that the water retention, zeta potential and shear viscosity of the MFC increases with homogenization cycle. MFC produced had a gel like consistency. Next, emulsifying stabilizing properties of MFC produced from cycle 0 to cycle 10 as well as their amount from 0 % to 1% were also assessed. Increase in homogenization cycle and the amount of MFC promote emulsion stability as observed from the low creaming index which is mainly attributed to the high shear viscosity and G’G’’ crossover of the emulsion. In all, the MFC derived from corn cob via enzymatic coupled with high pressure homogenization process has the potential to be used as gel like stabilizer in oil-in-water food emulsion system.

Enhancement of Saccharification Yield of Ulva pertusa Kjellman by High Pressure Homogenization Process for Bioethanol Production

KSBB Journal ◽  
2011 ◽  
Vol 26 (5) ◽  
pp. 400-406
Author(s):  
Woon-Yong Choi ◽  
Choon-Geun Lee ◽  
Ju-Hee Ahn ◽  
Yong-Chang Seo ◽  
Sang-Eun Lee ◽  
...  
Keyword(s):  
High Pressure ◽  
Ulva Pertusa ◽  
High Pressure Homogenization ◽  
Bioethanol Production ◽  
Homogenization Process ◽  
Saccharification Yield
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