Local free volumes in boron-bombarded Kapton polyimide: A positron lifetime study

G. Dlubek; R. Buchhold; Ch Hübner; A. Nakladal; K. Sahre

doi:10.1002/(SICI)1099-0488(19990901)37:17<2539::AID-POLB25>3.0.CO;2-7

Local free volumes in boron-bombarded Kapton polyimide: A positron lifetime study

G. Dlubek^*
, R. Buchhold
, Ch Hübner
, A. Nakladal
, K. Sahre

^*Corresponding author for this work

Institute of Physics

Köthen, Aussenstelle Halle
Technische Universität Dresden
Inst. of Polymer Research Dresden

10 Citations (Scopus)

Abstract

The bombardment of thin films of Kapton polyimide with energetic boron ions can lead to an increase in the maximum mass uptake from 3.9 to 14% at 100% relative humidity. It can be estimated that the number of N_o of free-volume sites increases from 1.8 to 6.5 nm on boron bombardment, assuming that each sorption site accommodates exactly one water molecule. Boron irradiation also leads to a notably increased curvature of the convex absorption isotherm indicating that the mean hole size υ decreases significantly below a value of 0.1 nm³. Position annihilation lifetime (PAL) spectroscopy is used to study the microstructure of the modified films after boron bombardment.

Original language	English
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	37
Issue number	17
Pages (from-to)	2539-2543
Number of pages	5
ISSN	0887-6266
DOIs	https://doi.org/10.1002/(SICI)1099-0488(19990901)37:17<2539::AID-POLB25>3.0.CO;2-7
Publication status	Published - 01.09.1999

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10.1002/(SICI)1099-0488(19990901)37:17<2539::AID-POLB25>3.0.CO;2-7

Cite this

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title = "Local free volumes in boron-bombarded Kapton polyimide: A positron lifetime study",

abstract = "The bombardment of thin films of Kapton polyimide with energetic boron ions can lead to an increase in the maximum mass uptake from 3.9 to 14\% at 100\% relative humidity. It can be estimated that the number of No of free-volume sites increases from 1.8 to 6.5 nm on boron bombardment, assuming that each sorption site accommodates exactly one water molecule. Boron irradiation also leads to a notably increased curvature of the convex absorption isotherm indicating that the mean hole size υ decreases significantly below a value of 0.1 nm3. Position annihilation lifetime (PAL) spectroscopy is used to study the microstructure of the modified films after boron bombardment.",

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T1 - Local free volumes in boron-bombarded Kapton polyimide: A positron lifetime study

AU - Dlubek, G.

AU - Buchhold, R.

AU - Hübner, Ch

AU - Nakladal, A.

AU - Sahre, K.

PY - 1999/9/1

Y1 - 1999/9/1

N2 - The bombardment of thin films of Kapton polyimide with energetic boron ions can lead to an increase in the maximum mass uptake from 3.9 to 14% at 100% relative humidity. It can be estimated that the number of No of free-volume sites increases from 1.8 to 6.5 nm on boron bombardment, assuming that each sorption site accommodates exactly one water molecule. Boron irradiation also leads to a notably increased curvature of the convex absorption isotherm indicating that the mean hole size υ decreases significantly below a value of 0.1 nm3. Position annihilation lifetime (PAL) spectroscopy is used to study the microstructure of the modified films after boron bombardment.

AB - The bombardment of thin films of Kapton polyimide with energetic boron ions can lead to an increase in the maximum mass uptake from 3.9 to 14% at 100% relative humidity. It can be estimated that the number of No of free-volume sites increases from 1.8 to 6.5 nm on boron bombardment, assuming that each sorption site accommodates exactly one water molecule. Boron irradiation also leads to a notably increased curvature of the convex absorption isotherm indicating that the mean hole size υ decreases significantly below a value of 0.1 nm3. Position annihilation lifetime (PAL) spectroscopy is used to study the microstructure of the modified films after boron bombardment.

UR - https://www.scopus.com/pages/publications/0032645512

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DO - 10.1002/(SICI)1099-0488(19990901)37:17<2539::AID-POLB25>3.0.CO;2-7

M3 - Journal articles

AN - SCOPUS:0032645512

SN - 0887-6266

VL - 37

SP - 2539

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JO - Journal of Polymer Science, Part B: Polymer Physics

JF - Journal of Polymer Science, Part B: Polymer Physics

IS - 17

ER -

Local free volumes in boron-bombarded Kapton polyimide: A positron lifetime study

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