Study Data from French National Institute for Agricultural Research (INRA) Provide New Insights into Polymer Research (Impact of Ionic Strength on Chitin Nanocrystal-Xyloglucan Multilayer Film Growth)
By a News Reporter-Staff News Editor at Journal of Technology -- New research on Polymer Research is the subject of a report. According to news reporting from Nantes, France, by VerticalNews journalists, research stated, "The impact of the ionic strength on the film growth has been studied for the architectures composed of chitin nanocrystals (ChiNC) and xyloglucan (XG) to better understand the fabrication process of multilayer films. The formation of ChiNC-XG assemblies was monitored by quartz crystal microbalance with dissipation (QCM-D) and multilayer films were fabricated by the spin-coating assisted layer-by-layer (LbL) procedure."
The news correspondents obtained a quote from the research from French National Institute for Agricultural Research (INRA), "Films were prepared from 1 g L-1 ChiNC dispersions at pH 4 without and with the addition of NaCl (0 and 5 mM, respectively) and 0.5 g L-1 XG solutions in water. Distinct growth pattern and structural characteristics were found for the films prepared from ChiNC at 0 and 5 mM NaCl. Specifically, films assembled without salt exhibited lower mass deposition and film growth failed after 5 (ChiNC-XG) bilayers. Differently, at 5 mM NaCl higher amounts of both polymers (ChiNC and XG) were adsorbed; therefore, the films were thicker, and the deposition succeeded up to 10 bilayers. Atomic force microscopy (AFM) revealed an almost completely covered surface after the adsorption of ChiNC at 5 mM NaCl whereas salt-free ChiNC dispersions resulted in lower surface coverage."
According to the news reporters, the research concluded: "These results reliably concluded that the fabrication of (ChiNC-XG) films requires the screening of the charges to promote the layers stability."
For more information on this research see: Impact of Ionic Strength on Chitin Nanocrystal-Xyloglucan Multilayer Film Growth. Biopolymers, 2014;101(9):924-930. Biopolymers can be contacted at: Wiley-Blackwell, 111 River St, Hoboken 07030-5774, NJ, USA. (Wiley-Blackwell - www.wiley.com/; Biopolymers - onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-0282)
Our news journalists report that additional information may be obtained by contacting A. Villares, INRA, Biopolymeres Interact Assemblages UR1268, F-44316 Nantes, France. Additional authors for this research include C. Moreau, I. Capron and B. Cathala.
Keywords for this news article include: Nantes, France, Europe, Polymer Research
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