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Investigators from South China University of Technology Have Reported New Data on Chemical Engineering (Reaction-Free Lignin Whitening via a...

July 23, 2014

Investigators from South China University of Technology Have Reported New Data on Chemical Engineering (Reaction-Free Lignin Whitening via a Self-Assembly of Acetylated Lignin)

By a News Reporter-Staff News Editor at Journal of Engineering -- Research findings on Chemical Engineering are discussed in a new report. According to news reporting out of Guangdong, People's Republic of China, by VerticalNews editors, research stated, "Acetylated lignin (ACL), obtained from the acetylation of alkali lignin (AL), has been found to self-assemble into ordered colloidal spheres in a THF/H2O media. This colloid formation causes the color of ACL to change from dark brown to light yellow."

Our news journalists obtained a quote from the research from the South China University of Technology, "ACL molecules form colloidal spheres at critical water content (CWC) of 48 vol % for an initial concentration of ACL in THF of 0.4 mg/mL. The colloidization process is completed at a water content of 77.75 vol %. The colloidal spheres formed from the gradual hydrophobic aggregation of ACL were approximately 80 nm in size. The concentration of Fe3+ before and after colloid formation did not change significantly, which indicates that the whitening of ACL colloids is not influenced by metal ions, but is affected by the rearrangement of chromophores during self-assembly and the light reflectance of uniform particles."

According to the news editors, the research concluded: "Self-assembly of ACL into colloidal spheres not only whitens the dark color of lignin but also provides a novel method to prepare ordered lignin-based nanomaterials."

For more information on this research see: Reaction-Free Lignin Whitening via a Self-Assembly of Acetylated Lignin. Industrial & Engineering Chemistry Research, 2014;53(24):10024-10028. Industrial & Engineering Chemistry Research can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society -; Industrial & Engineering Chemistry Research -

Our news journalists report that additional information may be obtained by contacting Y. Qian, S China Univ Technol, State Key Lab Pulp & Paper Engn, Sch Chem & Chem Engn, Guangzhou 510640, Guangdong, People's Republic of China. Additional authors for this research include Y.H. Deng, H. Li and X.Q. Qiu.

Keywords for this news article include: Asia, Guangdong, Chemical Engineering, People's Republic of China

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Source: Journal of Engineering

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