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通过动态光散射法测定硝化纤维素摩尔质量的特殊方面

Special Aspects of Nitrocellulose Molar Mass Determination by Dynamic Light Scattering.

作者信息

Solovov Roman, Kazberova Anfisa, Ershov Boris

机构信息

Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 117342 Moscow, Russia.

出版信息

Polymers (Basel). 2023 Jan 4;15(2):263. doi: 10.3390/polym15020263.

DOI:10.3390/polym15020263
PMID:36679145
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9862043/
Abstract

The dynamic light scattering method was successfully applied to determine the molar mass of nitrocellulose. The methodology of nitrocellulose fractionation in acetonic solutions is described in detail; six polymer fractions with monomodal distribution were obtained. It was shown that the unfractionated colloxylin with polymodal molar mass distribution had mass average molecular mass values of 87.3 ± 14.1, 28.3 ± 7.3, and 0.54 ± 0.17 kDa when investigated by the dynamic light scattering method. The viscometric method only provided integral viscosity average molar mass equal to 56.7 ± 5.8 kDa.

摘要

动态光散射法成功应用于测定硝化纤维素的摩尔质量。详细描述了硝化纤维素在丙酮溶液中的分级方法；获得了六个具有单峰分布的聚合物级分。结果表明，通过动态光散射法研究时，具有多峰摩尔质量分布的未分级火棉胶的质均分子量值分别为87.3±14.1、28.3±7.3和0.54±0.17 kDa。粘度法仅提供了等于56.7±5.8 kDa的积分粘均摩尔质量。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/0853bdf4bf0c/polymers-15-00263-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/319246ad8547/polymers-15-00263-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/b0ed84aee366/polymers-15-00263-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/62e4bd307d3e/polymers-15-00263-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/0853bdf4bf0c/polymers-15-00263-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/319246ad8547/polymers-15-00263-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/b0ed84aee366/polymers-15-00263-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/62e4bd307d3e/polymers-15-00263-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f10/9862043/0853bdf4bf0c/polymers-15-00263-g004.jpg

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