Trichlorosilane Chemisorption on Surface-Modified Poly(tetrafluoroethylene)

Bin Zhao, William J. Brittain, Erwin A. Vogler

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Modification of poly(tetrafluoroethylene) (PTFE) by trichlorosilane chemisorption to hydroxyl-modified (PTFE-OH) and silicate-modified (PTFE/SiO2) PTFE is reported. PTFE/SiO2 was prepared by exposure of PTFE-OH to SiCl4 vapor. XPS and contact angle analyses were consistent with the chemical composition of PTFE-OH and PTFE/SiO2. Chemisorption of trichlorosilanes from solution produced layers on PTFE-OH and PTFE/SiO2. The FTIR absorption intensity for these layers was consistent with monolayer formation. Monolayers with Br, CF3, CH3, CD3, and CH=CH2 terminal groups were prepared. Relative to deuterated hexadecyltrichlorosilane (DHTS) monolayers on PTFE-OH, higher contact angles were observed for DHTS monolayers on PTFE/SiO2 under a greater variety of deposition conditions. Reflectance FTIR indicated that the monolayers formed on PTFE-OH and PTFE/SiO2 exhibited crystalline-like order consistent with a well-ordered monolayer. Thermal annealing of the DHTS monolayers for several days at 125°C did not produce any significant changes in water contact angles.

Original languageEnglish (US)
Pages (from-to)796-800
Number of pages5
JournalMacromolecules
Volume32
Issue number3
DOIs
StatePublished - Feb 9 1999

Fingerprint

Chemisorption
Polytetrafluoroethylenes
Monolayers
Contact angle
trichlorosilane
Silicates
Hydroxyl Radical
X ray photoelectron spectroscopy
Vapors

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Zhao, Bin ; Brittain, William J. ; Vogler, Erwin A. / Trichlorosilane Chemisorption on Surface-Modified Poly(tetrafluoroethylene). In: Macromolecules. 1999 ; Vol. 32, No. 3. pp. 796-800.
@article{8f8f0cd994a84109863cb32023ebecc9,
title = "Trichlorosilane Chemisorption on Surface-Modified Poly(tetrafluoroethylene)",
abstract = "Modification of poly(tetrafluoroethylene) (PTFE) by trichlorosilane chemisorption to hydroxyl-modified (PTFE-OH) and silicate-modified (PTFE/SiO2) PTFE is reported. PTFE/SiO2 was prepared by exposure of PTFE-OH to SiCl4 vapor. XPS and contact angle analyses were consistent with the chemical composition of PTFE-OH and PTFE/SiO2. Chemisorption of trichlorosilanes from solution produced layers on PTFE-OH and PTFE/SiO2. The FTIR absorption intensity for these layers was consistent with monolayer formation. Monolayers with Br, CF3, CH3, CD3, and CH=CH2 terminal groups were prepared. Relative to deuterated hexadecyltrichlorosilane (DHTS) monolayers on PTFE-OH, higher contact angles were observed for DHTS monolayers on PTFE/SiO2 under a greater variety of deposition conditions. Reflectance FTIR indicated that the monolayers formed on PTFE-OH and PTFE/SiO2 exhibited crystalline-like order consistent with a well-ordered monolayer. Thermal annealing of the DHTS monolayers for several days at 125°C did not produce any significant changes in water contact angles.",
author = "Bin Zhao and Brittain, {William J.} and Vogler, {Erwin A.}",
year = "1999",
month = "2",
day = "9",
doi = "10.1021/ma9811526",
language = "English (US)",
volume = "32",
pages = "796--800",
journal = "Macromolecules",
issn = "0024-9297",
publisher = "American Chemical Society",
number = "3",

}

Trichlorosilane Chemisorption on Surface-Modified Poly(tetrafluoroethylene). / Zhao, Bin; Brittain, William J.; Vogler, Erwin A.

In: Macromolecules, Vol. 32, No. 3, 09.02.1999, p. 796-800.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Trichlorosilane Chemisorption on Surface-Modified Poly(tetrafluoroethylene)

AU - Zhao, Bin

AU - Brittain, William J.

AU - Vogler, Erwin A.

PY - 1999/2/9

Y1 - 1999/2/9

N2 - Modification of poly(tetrafluoroethylene) (PTFE) by trichlorosilane chemisorption to hydroxyl-modified (PTFE-OH) and silicate-modified (PTFE/SiO2) PTFE is reported. PTFE/SiO2 was prepared by exposure of PTFE-OH to SiCl4 vapor. XPS and contact angle analyses were consistent with the chemical composition of PTFE-OH and PTFE/SiO2. Chemisorption of trichlorosilanes from solution produced layers on PTFE-OH and PTFE/SiO2. The FTIR absorption intensity for these layers was consistent with monolayer formation. Monolayers with Br, CF3, CH3, CD3, and CH=CH2 terminal groups were prepared. Relative to deuterated hexadecyltrichlorosilane (DHTS) monolayers on PTFE-OH, higher contact angles were observed for DHTS monolayers on PTFE/SiO2 under a greater variety of deposition conditions. Reflectance FTIR indicated that the monolayers formed on PTFE-OH and PTFE/SiO2 exhibited crystalline-like order consistent with a well-ordered monolayer. Thermal annealing of the DHTS monolayers for several days at 125°C did not produce any significant changes in water contact angles.

AB - Modification of poly(tetrafluoroethylene) (PTFE) by trichlorosilane chemisorption to hydroxyl-modified (PTFE-OH) and silicate-modified (PTFE/SiO2) PTFE is reported. PTFE/SiO2 was prepared by exposure of PTFE-OH to SiCl4 vapor. XPS and contact angle analyses were consistent with the chemical composition of PTFE-OH and PTFE/SiO2. Chemisorption of trichlorosilanes from solution produced layers on PTFE-OH and PTFE/SiO2. The FTIR absorption intensity for these layers was consistent with monolayer formation. Monolayers with Br, CF3, CH3, CD3, and CH=CH2 terminal groups were prepared. Relative to deuterated hexadecyltrichlorosilane (DHTS) monolayers on PTFE-OH, higher contact angles were observed for DHTS monolayers on PTFE/SiO2 under a greater variety of deposition conditions. Reflectance FTIR indicated that the monolayers formed on PTFE-OH and PTFE/SiO2 exhibited crystalline-like order consistent with a well-ordered monolayer. Thermal annealing of the DHTS monolayers for several days at 125°C did not produce any significant changes in water contact angles.

UR - http://www.scopus.com/inward/record.url?scp=0033537377&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033537377&partnerID=8YFLogxK

U2 - 10.1021/ma9811526

DO - 10.1021/ma9811526

M3 - Article

AN - SCOPUS:0033537377

VL - 32

SP - 796

EP - 800

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 3

ER -