Electric field assisted gradient structure formation of glass microsphere columns in polymer films

2017 ◽  
Vol 153 ◽  
pp. 62-70 ◽  
Author(s):  
Xueqing Liu ◽  
Jiyan Liu ◽  
Yuanhao Guo ◽  
Miko Cakmak
Keyword(s):  
Electric Field ◽  
Structure Formation ◽  
Polymer Films ◽  
Glass Microsphere ◽  
Gradient Structure

Electric field and dewetting induced hierarchical structure formation in polymer/polymer/air trilayers

2005 ◽  
Vol 15 (4) ◽  
pp. 047506 ◽  
Author(s):  
K. Amanda Leach ◽  
Suresh Gupta ◽  
Michael D. Dickey ◽  
C. Grant Willson ◽  
Thomas P. Russell
Keyword(s):  
Electric Field ◽  
Structure Formation ◽  
Hierarchical Structure

scholarly journals THE USE OF HUMIC ACIDS FOR MODIFICATION OF BIODEGRADABLE FILMS MANUFACTURED ON THE BASIS OF POLYVINYL ALCOHOL AND HYDROXYPROPYLMETHYL CELLULOSE

2021 ◽  
Vol 6 ◽  
pp. 22-37
Author(s):  
Zhang Siaobin ◽  
V.V Lebedev ◽  
D.V Miroshnichenko
Keyword(s):  
Polyvinyl Alcohol ◽  
Mathematical Models ◽  
Humic Substances ◽  
Structure Formation ◽  
Humic Acids ◽  
Polymer Films ◽  
Biodegradable Polymer ◽  
Hydroxypropyl Methylcellulose ◽  
Specific Effect ◽  
Low Grade

The article is devoted to the problem of obtaining packaging materials that combine a high level of gas and / or moisture resistance and strength with the ability to quickly decompose without harmful effects on the environment. The purpose of the research described in the article is to study the possibility of making such a material, which, during the period of use, will not only be resistant to the effects of various bacteria, but even prevent their appearance, and upon burial it will be biodegradable. The initial components, namely polyvinyl alcohol, hydroxypropyl methylcellulose, and humic acids of coal origin (as antibacterial additives) were reasonably selected. The modifying effect of humic substances obtained from three different samples of low-grade Ukrainian coal has been studied. In the course of the studies performed, it was found that humic acids of different origins and with different characteristics have a specific effect on the processes of structure formation in solutions of polyvinyl alcohol and hydroxypropyl methylcellulose. In particular, it was shown that in polyvinyl alcohol and methylcellulose solutions with the addition of humic acids that do not contain particles of carbon residues of various degrees of dispersion, an increase in the formation of an ordered structure is observed. Micrographs of solutions of polyvinyl alcohol and hydroxypropyl methylcellulose with humic acids are presented. The peculiarities of the influence of humic substances on the processes of structure formation of solutions of polyvinyl alcohol and hydroxypropyl methylcellulose have been investigated in order to obtain hybrid environmentally friendly biodegradable polymer films. The corresponding experimental-statistical mathematical models have been developed, they describe the dependence of the conditional viscosity and conductivity of polyvinyl alcohol and hydroxypropyl methylcellulose on the content of humic acids, the duration of preparation and one of the characteristics of the raw materials used to obtain humic acids. The corresponding equations are given. Keywords: biodegradable polymer films, coal, humic acids, polyvinyl alcohol, hydroxypropyl methylcellulose, experimental statistical mathematical models Corresponding author Zhang Siaobin, e-mail: [email protected]

Gradient Structure Formation by Severe Plastic Deformation

2006 ◽  
pp. 787-792
Author(s):  
M. Danylenko ◽  
V. Gorban ◽  
Yu.N. Podrezov ◽  
S.A. Firstov ◽  
O. Rosenberg ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Structure Formation ◽  
Gradient Structure

Electric Field Induced Patterning of Polymer Films

2001 ◽  
Vol 705 ◽  
Author(s):  
David G. Bucknall ◽  
G. Andrew ◽  
D. Briggs
Keyword(s):  
Simple Model ◽  
Electric Field ◽  
Polymer Film ◽  
Polymer Films ◽  
Strong Electric Field ◽  
Length Scales ◽  
Observed Behaviour

AbstractBy confining a polymer film between two electrodes one of which is solid but thin enough to be flexible, a characteristic lateral morphology is produced when a strong electric field is applied across the film. A simple model to describe the observed behaviour is presented which accounts for the length scales of the observed morphology. This model demonstrates that feature sizes ranging from microns to nanometers can be obtained through selective choice of key parameters.

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