Synthesis and characterization of polyamideimide-branched siloxane and its gas-separation

Yong Bum Lee, Ho Bum Park, Jin Kie Shim, Young Moo Lee

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Polyamideimide-branched siloxanes (PAIBrSs) were synthesized from 4, 4′-(hexafluoroisopropyllidene)diphthalic anhydride (6FDA), p,p′-oxydianiline (ODA), and aminopropyl-terminated oligomeric dimethylsiloxane (ODMS). In this investigation, a mixture of N-methylpyrrolidinone (NMP) and tetrahydrofuran (THF) was used as a cosolvent for the homogeneous mixing of poly(amic acid) (PA) and the ODMS solution. Thionyl chloride (SOCl2) was used for the acylation of PA to activate the reaction between PA and ODMS. FTIR spectra showed an increase in the intensity of characteristic absorption peaks of dimethylsiloxane units with the amount of ODMS reacted. From thermogravimetric analysis (TGA), PAIBrSs showed good thermal stability, but relatively low thermal stability when compared with that of block poly(imide siloxane) (PIBlS) or poly(amideimide siloxane) (PAIBlS). A solubility test showed that dipolar aprotic solvents were relatively good solvents for the polymer. Gas separation was performed by single gas-permeation equipment. The permeabilities of PAIBrS membranes are higher than those of PIBlS membranes are the selectivities of PAIBrS membranes are lower than those of PIBlS membranes.

Original languageEnglish
Pages (from-to)965-973
Number of pages9
JournalJournal of Applied Polymer Science
Volume74
Issue number4
DOIs
StatePublished - 1999 Jan 1

Fingerprint

Polyamideimides
Siloxanes
Dimethylpolysiloxanes
Gases
Membranes
Thermodynamic stability
1-methyl-2-pyrrolidinone
Acylation
Permeation
Imides
Thermogravimetric analysis
Solubility
Anhydrides
Acids
Polymers

Cite this

@article{470300ed32854e1cb1529b595f6b50f6,
title = "Synthesis and characterization of polyamideimide-branched siloxane and its gas-separation",
abstract = "Polyamideimide-branched siloxanes (PAIBrSs) were synthesized from 4, 4′-(hexafluoroisopropyllidene)diphthalic anhydride (6FDA), p,p′-oxydianiline (ODA), and aminopropyl-terminated oligomeric dimethylsiloxane (ODMS). In this investigation, a mixture of N-methylpyrrolidinone (NMP) and tetrahydrofuran (THF) was used as a cosolvent for the homogeneous mixing of poly(amic acid) (PA) and the ODMS solution. Thionyl chloride (SOCl2) was used for the acylation of PA to activate the reaction between PA and ODMS. FTIR spectra showed an increase in the intensity of characteristic absorption peaks of dimethylsiloxane units with the amount of ODMS reacted. From thermogravimetric analysis (TGA), PAIBrSs showed good thermal stability, but relatively low thermal stability when compared with that of block poly(imide siloxane) (PIBlS) or poly(amideimide siloxane) (PAIBlS). A solubility test showed that dipolar aprotic solvents were relatively good solvents for the polymer. Gas separation was performed by single gas-permeation equipment. The permeabilities of PAIBrS membranes are higher than those of PIBlS membranes are the selectivities of PAIBrS membranes are lower than those of PIBlS membranes.",
author = "Lee, {Yong Bum} and Park, {Ho Bum} and Shim, {Jin Kie} and Lee, {Young Moo}",
year = "1999",
month = "1",
day = "1",
doi = "10.1002/(SICI)1097-4628(19991024)74:4<965::AID-APP23>3.0.CO;2-4",
language = "English",
volume = "74",
pages = "965--973",
journal = "Journal of Applied Polymer Science",
issn = "0021-8995",
number = "4",

}

Synthesis and characterization of polyamideimide-branched siloxane and its gas-separation. / Lee, Yong Bum; Park, Ho Bum; Shim, Jin Kie; Lee, Young Moo.

In: Journal of Applied Polymer Science, Vol. 74, No. 4, 01.01.1999, p. 965-973.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and characterization of polyamideimide-branched siloxane and its gas-separation

AU - Lee, Yong Bum

AU - Park, Ho Bum

AU - Shim, Jin Kie

AU - Lee, Young Moo

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Polyamideimide-branched siloxanes (PAIBrSs) were synthesized from 4, 4′-(hexafluoroisopropyllidene)diphthalic anhydride (6FDA), p,p′-oxydianiline (ODA), and aminopropyl-terminated oligomeric dimethylsiloxane (ODMS). In this investigation, a mixture of N-methylpyrrolidinone (NMP) and tetrahydrofuran (THF) was used as a cosolvent for the homogeneous mixing of poly(amic acid) (PA) and the ODMS solution. Thionyl chloride (SOCl2) was used for the acylation of PA to activate the reaction between PA and ODMS. FTIR spectra showed an increase in the intensity of characteristic absorption peaks of dimethylsiloxane units with the amount of ODMS reacted. From thermogravimetric analysis (TGA), PAIBrSs showed good thermal stability, but relatively low thermal stability when compared with that of block poly(imide siloxane) (PIBlS) or poly(amideimide siloxane) (PAIBlS). A solubility test showed that dipolar aprotic solvents were relatively good solvents for the polymer. Gas separation was performed by single gas-permeation equipment. The permeabilities of PAIBrS membranes are higher than those of PIBlS membranes are the selectivities of PAIBrS membranes are lower than those of PIBlS membranes.

AB - Polyamideimide-branched siloxanes (PAIBrSs) were synthesized from 4, 4′-(hexafluoroisopropyllidene)diphthalic anhydride (6FDA), p,p′-oxydianiline (ODA), and aminopropyl-terminated oligomeric dimethylsiloxane (ODMS). In this investigation, a mixture of N-methylpyrrolidinone (NMP) and tetrahydrofuran (THF) was used as a cosolvent for the homogeneous mixing of poly(amic acid) (PA) and the ODMS solution. Thionyl chloride (SOCl2) was used for the acylation of PA to activate the reaction between PA and ODMS. FTIR spectra showed an increase in the intensity of characteristic absorption peaks of dimethylsiloxane units with the amount of ODMS reacted. From thermogravimetric analysis (TGA), PAIBrSs showed good thermal stability, but relatively low thermal stability when compared with that of block poly(imide siloxane) (PIBlS) or poly(amideimide siloxane) (PAIBlS). A solubility test showed that dipolar aprotic solvents were relatively good solvents for the polymer. Gas separation was performed by single gas-permeation equipment. The permeabilities of PAIBrS membranes are higher than those of PIBlS membranes are the selectivities of PAIBrS membranes are lower than those of PIBlS membranes.

UR - http://www.scopus.com/inward/record.url?scp=0032628850&partnerID=8YFLogxK

U2 - 10.1002/(SICI)1097-4628(19991024)74:4<965::AID-APP23>3.0.CO;2-4

DO - 10.1002/(SICI)1097-4628(19991024)74:4<965::AID-APP23>3.0.CO;2-4

M3 - Article

AN - SCOPUS:0032628850

VL - 74

SP - 965

EP - 973

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

IS - 4

ER -