Diffusional dynamics near the glass transition in amorphous polymer thin films

Denise D. Deppe; John M Torkelson

Diffusional dynamics near the glass transition in amorphous polymer thin films

Denise D. Deppe^*, John M Torkelson

^*Corresponding author for this work

Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

A novel experimental approach involving the fluorescence nonradiative energy transfer technique is employed to study transport processes in thin polymer films near the glass transition through the measurement of energy transfer efficiency, E. Using a layered thin film sample geometry, values of the small molecule diffusion coefficient, D, as low as 8 × 10^-16 cm²/sec are measured within diffusion times of 3.5 hours. These studies reveal a significant dependence of both the magnitude and temperature dependence of D on diffusant size.

Original language	English (US)
Pages (from-to)	221-226
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	407
State	Published - Jan 1 1996

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials

Cite this

@article{6fb6b17cc3ed46a9a47f20bcdc2c7187,

title = "Diffusional dynamics near the glass transition in amorphous polymer thin films",

abstract = "A novel experimental approach involving the fluorescence nonradiative energy transfer technique is employed to study transport processes in thin polymer films near the glass transition through the measurement of energy transfer efficiency, E. Using a layered thin film sample geometry, values of the small molecule diffusion coefficient, D, as low as 8 × 10-16 cm2/sec are measured within diffusion times of 3.5 hours. These studies reveal a significant dependence of both the magnitude and temperature dependence of D on diffusant size.",

author = "Deppe, {Denise D.} and Torkelson, {John M}",

year = "1996",

month = jan,

day = "1",

language = "English (US)",

volume = "407",

pages = "221--226",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

}

TY - JOUR

T1 - Diffusional dynamics near the glass transition in amorphous polymer thin films

AU - Deppe, Denise D.

AU - Torkelson, John M

PY - 1996/1/1

Y1 - 1996/1/1

N2 - A novel experimental approach involving the fluorescence nonradiative energy transfer technique is employed to study transport processes in thin polymer films near the glass transition through the measurement of energy transfer efficiency, E. Using a layered thin film sample geometry, values of the small molecule diffusion coefficient, D, as low as 8 × 10-16 cm2/sec are measured within diffusion times of 3.5 hours. These studies reveal a significant dependence of both the magnitude and temperature dependence of D on diffusant size.

AB - A novel experimental approach involving the fluorescence nonradiative energy transfer technique is employed to study transport processes in thin polymer films near the glass transition through the measurement of energy transfer efficiency, E. Using a layered thin film sample geometry, values of the small molecule diffusion coefficient, D, as low as 8 × 10-16 cm2/sec are measured within diffusion times of 3.5 hours. These studies reveal a significant dependence of both the magnitude and temperature dependence of D on diffusant size.

UR - http://www.scopus.com/inward/record.url?scp=0029733952&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029733952&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029733952

SN - 0272-9172

VL - 407

SP - 221

EP - 226

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

ER -

Diffusional dynamics near the glass transition in amorphous polymer thin films

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this