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Recent Findings from Zhejiang Science Technical University Provides New Insights into Nanocrystals

March 4, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators discuss new findings in Nanocrystals. According to news reporting out of Hangzhou, People's Republic of China, by NewsRx editors, research stated, "Chemically modified cellulose nanocrystals (CNCs) were synthesized by grafting poly(3hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) onto CNCs via homogeneous acylation reaction between N,N-dimethyl formamide (DMF) by using toluene diisocyanate (TDI) as coupling agent and dibutyltin dilaurate as catalyst. The resulting copolymers were studied by using (HNMR)-H-1, FT-IR, WAXD, DSC, TGA and contact angle measurements."

Our news journalists obtained a quote from the research from Zhejiang Science Technical University, "Results showed that the copolymers kept their initial morphological integrity. Moreover, it is found that with the increase of the TDI/PHBV fractions, two transition exhibitions occurred in their thermal and hydrophobic properties, which could be modulated through controlling the lengths and grafting densities of PHBV side chains."

According to the news editors, the research concluded: "Compared with those of neat PHBV, the crystallization of PHCN7 became easy while the crystallinity slightly decreased to 55.5%, the maximum decomposition temperature increased by 48.5 degrees C, meanwhile the contact angle increased to 58 degrees as compared to neat CNCs (30 degrees)."

For more information on this research see: Surface grafting of cellulose nanocrystals with poly(3-hydroxybutyrate-co-3-hydroxyvalerate). Carbohydrate Polymers, 2014;101():471-478. Carbohydrate Polymers can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier -; Carbohydrate Polymers -

Our news journalists report that additional information may be obtained by contacting H.Y. Yu, Zhejiang Sci Technical Univ, Natl Engn Lab Text Fiber Mat & Proc Technol, Hangzhou 310018, Zhejiang, People's Republic of China (see also Nanocrystals).

Keywords for this news article include: Asia, Hangzhou, Nanotechnology, Carboxylic Acids, Hydroxybutyrates, Organic Chemicals, 3-Hydroxybutyric Acid, Emerging Technologies, People's Republic of China

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Source: Life Science Weekly

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