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New mechanochemical effects in the poly(N-vinylcaprolactam)—Nano-titanium oxides(IV) system

Published online by Cambridge University Press:  10 April 2018

Olesya Timaeva ,
Irina Chihacheva ,
Galina Kuzmicheva ,
Natalia Ivanovskaya  and
Andrey Dorohov
Olesya Timaeva*
Affiliation:
Moscow Technological University, Institute of Fine Chemical Technologies, Moscow 119571, Russia
Irina Chihacheva
Affiliation:
Moscow Technological University, Institute of Fine Chemical Technologies, Moscow 119571, Russia
Galina Kuzmicheva
Affiliation:
Moscow Technological University, Institute of Fine Chemical Technologies, Moscow 119571, Russia
Natalia Ivanovskaya
Affiliation:
Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics”, Russian Academy of Sciences, Moscow 119333, Russia
Andrey Dorohov
Affiliation:
Moscow Technological University, Institute of Fine Chemical Technologies, Moscow 119571, Russia
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Nanocomposites based on the poly(N-vinylcaprolactam) (PVCL) fabricated from PVCL solutions at different drying temperatures (PVCL25 at 25 °C, PVCL40 at 40 °C) and titanium oxides(IV) nanoparticles (TNPs) were produced for the first time by dry mixing and grinding and mechanical milling in a planetary ball mill using different PVCL:TNP ratios. New effects in initial PVCL (hydration) and TNP [decomposition of η-phase; appearance of hydrated titanium dioxide (HTD)] samples, as well as in PVCL [(de)hydration, disordering of the heterocycles] and TNP (amorphization, dehydration of η-phase, partial crystallization of Hombifine N with anatase), involved as components in PVCL/TNP nanocomposites, were found. The different role of each type of treatments and its conditions in the specific of the effects observed was shown. Only high-frequency mechanical milling leads to the appearance of HTD and the complete disappearance of the second peak of PVCL (disordering of the heterocycles) in PVCL/TNP nanocomposites.

Keywords

compositepolymerphase transformation
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 10 , 28 May 2018 , pp. 1475 - 1485
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Copyright
Copyright © Materials Research Society 2018 

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Footnotes

Contributing Editor: Sarah Morgan

References

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