PSL Research University, Chimie ParisTech, Laboratory of Physicochemistry of Electrolytes, Colloids and Analytical Sciences (PECSA), 11 rue Pierre et Marie Curie, 75005 Paris, France; Central Laboratory of Police Prefecture (LCPP), 39 bis rue de Dantzig, 75015 Paris, France; CNRS, UMR 7195, 11 rue Pierre et Marie Curie, 75005 Paris, France; Sorbonne Université, UPMC, Université Paris 6, 4 Place Jussieu, 75005 Paris, France.
PSL Research University, Chimie ParisTech, Laboratory of Physicochemistry of Electrolytes, Colloids and Analytical Sciences (PECSA), 11 rue Pierre et Marie Curie, 75005 Paris, France; CNRS, UMR 7195, 11 rue Pierre et Marie Curie, 75005 Paris, France; Sorbonne Université, UPMC, Université Paris 6, 4 Place Jussieu, 75005 Paris, France.
Carbohydr Polym. 2015 Sep 5;128:99-104. doi: 10.1016/j.carbpol.2015.04.013. Epub 2015 Apr 22.
Specific viscosities for a set of six nitrocellulose (NC) standards comprising three different mass-average molar masses (between 20,000 and 300,000 g mol(-1)) of two different nitrogen contents (11.2 and 12.1%) were measured at 20 °C in tetrahydrofuran, using capillary electrophoresis instrumentation as a bench-top viscometer in frontal mode. Intrinsic viscosities were derived applying Huggins' and Kraemer's models, showing excellent convergence of both models at infinitely diluted polymer concentration. Good overall consistency was shown between viscosity data experimentally acquired by this new protocol and the mass-average molar masses provided by the manufacturers. This simple protocol should be of interest for a better understanding of the solvent interaction given by this complex polymer, and beyond this, for tailoring NC solutions devoted to film deposition, and for the determination of mass-average molar masses of unknown NC samples.
在 20°C 下，使用毛细管电泳仪作为台式黏度计，以前沿模式在四氢呋喃中测量了包含三个不同质量平均摩尔质量（20,000 至 300,000 g/mol）的两种不同氮含量（11.2%和 12.1%）的一组六个硝化纤维素（NC）标准品的比浓黏度。通过应用 Huggins 和 Kraemer 模型得出了特性黏度，在聚合物浓度无限稀释时，两种模型都具有出色的收敛性。通过这种新方案实验获得的黏度数据与制造商提供的质量平均摩尔质量之间表现出很好的整体一致性。对于更好地理解这种复杂聚合物的溶剂相互作用，以及除此之外，对于定制专用于薄膜沉积的 NC 溶液以及确定未知 NC 样品的质量平均摩尔质量，这种简单的方案应该是很有意义的。
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