Gas permeability and free volume of highly branched substituted acetylene polymers

Yu P. Yampolskii; A. P. Korikov; V. P. Shantarovich; K. Nagai; B. D. Freeman; T. Masuda; M. Teraguchi; G. Kwak

doi:10.1021/ma000628u

Gas permeability and free volume of highly branched substituted acetylene polymers

Yu P. Yampolskii, A. P. Korikov, V. P. Shantarovich, K. Nagai, B. D. Freeman, T. Masuda, M. Teraguchi, G. Kwak

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

81 Scopus citations

Abstract

Gas permeation, sorption, and structural properties of two highly branched polyacetylenes, poly[1-phenyl-2-[p-(triphenylsilyl)phenyl]acetylcne] (PPhSiDPA) and poly[1-phenyl-2-[p-(triisopropylsilyl) phenyl]acetylene] (PPrSiDPA), are reported. Structurally, both polymers have much in common; however, their transport properties are quite different. PPhSiDPA has dramatically lower permeability coefficients than Pprsidpa. For example, the O₂ permeability coefficients of PPhSiDPA and PPrSiDPA are 12 × 10^-10 and 230 × 10^-10 cm³ (STP) cm/(cm² s cmHg), respectively, at 22 °C. Gas solubility is very high in PPrSiDPA, similar to that observed in poly(1-trimethysilyl-1-propyne) (PTMSP), the most permeable polymer known. Gas solubility coefficients of PPhSiDPA are 2-3 times lower than those of PPrSiDPA. Free volume size and size distribution were characterized using positron annihilation lifetime (PAL) spectroscopy. Results from these studies (i.e.; a bimodal size distribution of free volume elements and large free volume element size) are consistent with the observed transport and sorption properties of PPrSiDPA. In contrast, the PAL spectrum of PPhSiDPA is similar to that of conventional low free volume glassy polymers.

Original language	English
Pages (from-to)	1788-1796
Number of pages	9
Journal	Macromolecules
Volume	34
Issue number	6
DOIs	https://doi.org/10.1021/ma000628u
State	Published - 13 Mar 2001

Access to Document

10.1021/ma000628u

Cite this

@article{aca99413eafc4c4595df6d0bf8772aea,

title = "Gas permeability and free volume of highly branched substituted acetylene polymers",

abstract = "Gas permeation, sorption, and structural properties of two highly branched polyacetylenes, poly[1-phenyl-2-[p-(triphenylsilyl)phenyl]acetylcne] (PPhSiDPA) and poly[1-phenyl-2-[p-(triisopropylsilyl) phenyl]acetylene] (PPrSiDPA), are reported. Structurally, both polymers have much in common; however, their transport properties are quite different. PPhSiDPA has dramatically lower permeability coefficients than Pprsidpa. For example, the O2 permeability coefficients of PPhSiDPA and PPrSiDPA are 12 × 10-10 and 230 × 10-10 cm3 (STP) cm/(cm2 s cmHg), respectively, at 22 °C. Gas solubility is very high in PPrSiDPA, similar to that observed in poly(1-trimethysilyl-1-propyne) (PTMSP), the most permeable polymer known. Gas solubility coefficients of PPhSiDPA are 2-3 times lower than those of PPrSiDPA. Free volume size and size distribution were characterized using positron annihilation lifetime (PAL) spectroscopy. Results from these studies (i.e.; a bimodal size distribution of free volume elements and large free volume element size) are consistent with the observed transport and sorption properties of PPrSiDPA. In contrast, the PAL spectrum of PPhSiDPA is similar to that of conventional low free volume glassy polymers.",

author = "Yampolskii, {Yu P.} and Korikov, {A. P.} and Shantarovich, {V. P.} and K. Nagai and Freeman, {B. D.} and T. Masuda and M. Teraguchi and G. Kwak",

year = "2001",

month = mar,

day = "13",

doi = "10.1021/ma000628u",

language = "English",

volume = "34",

pages = "1788--1796",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "6",

}

TY - JOUR

T1 - Gas permeability and free volume of highly branched substituted acetylene polymers

AU - Yampolskii, Yu P.

AU - Korikov, A. P.

AU - Shantarovich, V. P.

AU - Nagai, K.

AU - Freeman, B. D.

AU - Masuda, T.

AU - Teraguchi, M.

AU - Kwak, G.

PY - 2001/3/13

Y1 - 2001/3/13

N2 - Gas permeation, sorption, and structural properties of two highly branched polyacetylenes, poly[1-phenyl-2-[p-(triphenylsilyl)phenyl]acetylcne] (PPhSiDPA) and poly[1-phenyl-2-[p-(triisopropylsilyl) phenyl]acetylene] (PPrSiDPA), are reported. Structurally, both polymers have much in common; however, their transport properties are quite different. PPhSiDPA has dramatically lower permeability coefficients than Pprsidpa. For example, the O2 permeability coefficients of PPhSiDPA and PPrSiDPA are 12 × 10-10 and 230 × 10-10 cm3 (STP) cm/(cm2 s cmHg), respectively, at 22 °C. Gas solubility is very high in PPrSiDPA, similar to that observed in poly(1-trimethysilyl-1-propyne) (PTMSP), the most permeable polymer known. Gas solubility coefficients of PPhSiDPA are 2-3 times lower than those of PPrSiDPA. Free volume size and size distribution were characterized using positron annihilation lifetime (PAL) spectroscopy. Results from these studies (i.e.; a bimodal size distribution of free volume elements and large free volume element size) are consistent with the observed transport and sorption properties of PPrSiDPA. In contrast, the PAL spectrum of PPhSiDPA is similar to that of conventional low free volume glassy polymers.

AB - Gas permeation, sorption, and structural properties of two highly branched polyacetylenes, poly[1-phenyl-2-[p-(triphenylsilyl)phenyl]acetylcne] (PPhSiDPA) and poly[1-phenyl-2-[p-(triisopropylsilyl) phenyl]acetylene] (PPrSiDPA), are reported. Structurally, both polymers have much in common; however, their transport properties are quite different. PPhSiDPA has dramatically lower permeability coefficients than Pprsidpa. For example, the O2 permeability coefficients of PPhSiDPA and PPrSiDPA are 12 × 10-10 and 230 × 10-10 cm3 (STP) cm/(cm2 s cmHg), respectively, at 22 °C. Gas solubility is very high in PPrSiDPA, similar to that observed in poly(1-trimethysilyl-1-propyne) (PTMSP), the most permeable polymer known. Gas solubility coefficients of PPhSiDPA are 2-3 times lower than those of PPrSiDPA. Free volume size and size distribution were characterized using positron annihilation lifetime (PAL) spectroscopy. Results from these studies (i.e.; a bimodal size distribution of free volume elements and large free volume element size) are consistent with the observed transport and sorption properties of PPrSiDPA. In contrast, the PAL spectrum of PPhSiDPA is similar to that of conventional low free volume glassy polymers.

UR - http://www.scopus.com/inward/record.url?scp=0035853247&partnerID=8YFLogxK

U2 - 10.1021/ma000628u

DO - 10.1021/ma000628u

M3 - Article

AN - SCOPUS:0035853247

SN - 0024-9297

VL - 34

SP - 1788

EP - 1796

JO - Macromolecules

JF - Macromolecules

IS - 6

ER -

Gas permeability and free volume of highly branched substituted acetylene polymers

Abstract

Access to Document

Other files and links

Fingerprint

Cite this