EFFECT OF CRYOGENIC AND HEATING TREATMENT ON THE SOLUTION PROPERTIES OF NITROCELLULOSE

The effect of cryogenic and heating treatment on the solution properties of rigid polymer nitrocellulose (NC) in dilute tetrahydrofuran solution were studied with a sealed viscometer and a size exclusion chromatograph (SEC),respectively. The experimental results show that the relative viscosity of N...

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Bibliographic Details
Published in高分子科学（英文版） Vol. 23; no. 1; pp. 119 - 122
Main Authors Li Li, Hu Yang, Rong-shi Cheng, Zhi-liu Wang
Format Journal Article
LanguageEnglish
Published Jiangsu Engineering Research Center for Bio-medical Function Materials, College of Chemistry & Environmental Science, Nanjing Normal University, Nanjing 210097, China%Key Laboratory for Mesoscopic Chemistry of Ministry of Education, Department of Polymer Science & Technology, College of Chemistry & Chemical Engineering, Nanjing University, Nanjing 210093, China 2005
Subjects
Viscosity
Freezing-thawing cyclic treatment
Heating treatment
Size exclusion chromatograph
Nitrocellulose
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Summary:The effect of cryogenic and heating treatment on the solution properties of rigid polymer nitrocellulose (NC) in dilute tetrahydrofuran solution were studied with a sealed viscometer and a size exclusion chromatograph (SEC),respectively. The experimental results show that the relative viscosity of NC solution decreases after repeated freezingthawing treatment. The decreased viscosity value of NC could not be restored but decreased further after the solution being re-heated. The experimental results of SEC are fully consistent with that of viscosity measurements. It is believed that the effect of two treatments on NC solution both causes the apparent hydrodynamic volume to decrease. But they are assumed to be ascribed to different mechanisms.
ISSN:0256-7679
1439-6203
DOI:10.3321/j.issn:0256-7679.2005.01.017