Subcritical CO2 assisted polymer surface engineering at low temperatures

Yong Yang; Ly James Lee

doi:10.1557/PROC-843-T2.10

Subcritical CO₂ assisted polymer surface engineering at low temperatures

Yong Yang^*, Ly James Lee

^*Corresponding author for this work

Institute of Biopharmaceutical Sciences

Research output: Contribution to journal › Conference article › peer-review

Abstract

Polymer surface engineering under subcritical CO₂ at low temperature was discussed. Neutron reflectivity (NR) and atomic force microscopy (AFM) were used to investigate the surface dynamics of polymer under CO ₂. It was found that there is a rubbery layer of up to a hundred nanometers thick at the surface where the glass transition temperature (T _g) was lower than that in the bulk and CO₂ dramatically reduced the surface T_g. The results show that under NR studies CO₂ can enhance the chain mobility at the polymer surfaces below the polymer bulk T_g.

Original language	English
Article number	T2.10
Pages (from-to)	43-48
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	843
DOIs	https://doi.org/10.1557/PROC-843-T2.10
State	Published - 2005
Event	Surface Engineering 2004 - Fundamentals and Applications - Boston, MA, United States Duration: 30 Nov 2004 → 2 Dec 2004

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title = "Subcritical CO2 assisted polymer surface engineering at low temperatures",

abstract = "Polymer surface engineering under subcritical CO2 at low temperature was discussed. Neutron reflectivity (NR) and atomic force microscopy (AFM) were used to investigate the surface dynamics of polymer under CO 2. It was found that there is a rubbery layer of up to a hundred nanometers thick at the surface where the glass transition temperature (T g) was lower than that in the bulk and CO2 dramatically reduced the surface Tg. The results show that under NR studies CO2 can enhance the chain mobility at the polymer surfaces below the polymer bulk Tg.",

author = "Yong Yang and Lee, {Ly James}",

year = "2005",

doi = "10.1557/PROC-843-T2.10",

language = "English",

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T1 - Subcritical CO2 assisted polymer surface engineering at low temperatures

AU - Yang, Yong

AU - Lee, Ly James

PY - 2005

Y1 - 2005

N2 - Polymer surface engineering under subcritical CO2 at low temperature was discussed. Neutron reflectivity (NR) and atomic force microscopy (AFM) were used to investigate the surface dynamics of polymer under CO 2. It was found that there is a rubbery layer of up to a hundred nanometers thick at the surface where the glass transition temperature (T g) was lower than that in the bulk and CO2 dramatically reduced the surface Tg. The results show that under NR studies CO2 can enhance the chain mobility at the polymer surfaces below the polymer bulk Tg.

AB - Polymer surface engineering under subcritical CO2 at low temperature was discussed. Neutron reflectivity (NR) and atomic force microscopy (AFM) were used to investigate the surface dynamics of polymer under CO 2. It was found that there is a rubbery layer of up to a hundred nanometers thick at the surface where the glass transition temperature (T g) was lower than that in the bulk and CO2 dramatically reduced the surface Tg. The results show that under NR studies CO2 can enhance the chain mobility at the polymer surfaces below the polymer bulk Tg.

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U2 - 10.1557/PROC-843-T2.10

DO - 10.1557/PROC-843-T2.10

M3 - Conference article

AN - SCOPUS:20444395050

SN - 0272-9172

VL - 843

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JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

M1 - T2.10

T2 - Surface Engineering 2004 - Fundamentals and Applications

Y2 - 30 November 2004 through 2 December 2004

ER -

Subcritical CO₂ assisted polymer surface engineering at low temperatures

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