Silicon-Containing Polyimide-Based Polymers with High Temperature Stability

Chavez, Ricardo; Ionescu, Emanuel; Fasel, Claudia; Riedel, Ralf

doi:10.1021/cm1010746

Cited by 13 publications

(11 citation statements)

References 16 publications

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“…An additional feature that supports the presence of a ladder structure in the polymers synthesized within the present study is the comparison of their melting points with those that we previously obtained for similar Si-based linear polyimides. 16 A linear polymer synthesized from BTDA and a siloxanecontaining diamine (p-isomer) exhibited a melting point of 390 C, 16 whereas the analogous ladder polymer based on BTDA and the siloxane tetraamine (p-isomer), which has been synthesized in the present work, exhibits a melting point of 405 C.…”

Section: Article Wileyonlinelibrarycom/appmentioning

confidence: 85%

“…16 A linear polymer synthesized from BTDA and a siloxanecontaining diamine (p-isomer) exhibited a melting point of 390 C, 16 whereas the analogous ladder polymer based on BTDA and the siloxane tetraamine (p-isomer), which has been synthesized in the present work, exhibits a melting point of 405 C. 16 A linear polymer synthesized from BTDA and a siloxanecontaining diamine (p-isomer) exhibited a melting point of 390 C, 16 whereas the analogous ladder polymer based on BTDA and the siloxane tetraamine (p-isomer), which has been synthesized in the present work, exhibits a melting point of 405 C.…”

Section: Synthesis Of the Imide-containing Ladder Polyphenylsilsesquimentioning

confidence: 99%

“…16 Therefore, it can be expected that by introducing imide units into the molecular structure of ladder polyphenylsilsesquioxanes, it is possible to influence the properties of these polymers in order to expand their application spectrum and improve their process-ability without sacrificing their high thermal stability. 16 Therefore, it can be expected that by introducing imide units into the molecular structure of ladder polyphenylsilsesquioxanes, it is possible to influence the properties of these polymers in order to expand their application spectrum and improve their process-ability without sacrificing their high thermal stability.…”

Section: Introductionmentioning

confidence: 99%

“…We have shown recently that it is possible to tailor the thermal properties of linear silicon-containing polyimides by adjusting the composition and structure of the building blocks of the imide unit. 16 Therefore, it can be expected that by introducing imide units into the molecular structure of ladder polyphenylsilsesquioxanes, it is possible to influence the properties of these polymers in order to expand their application spectrum and improve their process-ability without sacrificing their high thermal stability. Thus, the aim of this work is to demonstrate that with our preparative method it is possible to produce different ladder polyphenylsilsesquioxanes in high yields.…”

Section: Introductionmentioning

confidence: 99%

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Imide‐containing ladder polyphenylsilsesquioxanes with high thermal stability and thermoplastic properties

Chavez

Ionescu

Fasel

et al. 2013

J of Applied Polymer Sci

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This work reports for the first time the synthesis of ladder polyphenylsilsesquioxanes containing imide building blocks as parts of the main parallel chains. The ladder structure of the synthesized polymers was documented by means of small angle X-ray scattering (SAXS) measurements. The obtained ladder polymers exhibit stability with respect to decomposition up to temperatures as high as 460 C; additionally, they have melting points far below their decomposition temperatures, which make them interesting candidate materials for thermoplastic processing.

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Section: Article Wileyonlinelibrarycom/appmentioning

confidence: 85%

Section: Synthesis Of the Imide-containing Ladder Polyphenylsilsesquimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Imide‐containing ladder polyphenylsilsesquioxanes with high thermal stability and thermoplastic properties

Chavez

Ionescu

Fasel

et al. 2013

J of Applied Polymer Sci

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“…No phase separation is formed between polymers and sil ica and intermolecular cross linkage are formed in the bulk of films, subsequently inducing high hydropho bicity; a heat durability property can be expected as well [16,17]. In this study, three series of polyether based PU Silica nanocomposites hybrid films were synthesized through sol gel process.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of intermolecular bonding, thermal and tensile properties of polyurethane-urea-silica hybrids films

et al. 2015

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Properties of polyimide hybrids with mixed metal oxide

Huang

Tseng

et al. 2012

J of Applied Polymer Sci

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Polyimide/silica-titania (PI/SiO 2 -TiO 2 ) hybrid films were prepared via an in situ sol-gel process. The PI precursor, poly(amic acid) (PAA), which contains 2,2'-bis[4-(4-aminophenoxy)-phenyl]propane (p-BAPPP), 3,3',4,4'-benzophenetetracarboxylic anhydride (BTDA) and 3-aminopropyltrimethoxysilane (APrTMOS), was first synthesized; this was followed by the addition of phenyltrimethoxysilane (PTMS) and/or tetraethyl orthotitanate (Ti(OEt) 4 ) to fabricate PI/SiO 2 -TiO 2 films. The relative content of SiO 2 to TiO 2 has remarkable effects on the crosslink structure and resultant properties of the hybrids. XPS results confirm that the amount of Si on the surface of the hybrids is higher than that in the bulk. The distribution of Ti in the hybrid films is contrary to the above trend because of the formation of three-dimensional SiAOASi, SiAOATi, and TiAOATi networks. The SiO 2 content of the hybrids containing only silica significantly affects their refractive index, contact angle, and dielectric constant. The films with added PTMS show higher contact angles than pure PI because nonpolar segments, AC 2 H 6 or benzene groups, tend to distribute on the surface. Upon the addition of (Ti(OEt) 4 ), some hydrophilic segments on the surface of the hybrids are induced because of the formation of a crosslinked structure. The denser crosslinked molecular structure, and consequently lower CTE and higher T g are obtained from hybrids containing more TiO 2 . By comparing the above properties and flexibility, the best composition of metal oxides (SiO 2 /TiO 2 ) in hybrids is 20/80. That is, an optimum ratio of metal oxides in PI hybrids induces superior properties for advanced practical applications.

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Silicon-Containing Polyimide-Based Polymers with High Temperature Stability

Cited by 13 publications

References 16 publications

Imide‐containing ladder polyphenylsilsesquioxanes with high thermal stability and thermoplastic properties

Imide‐containing ladder polyphenylsilsesquioxanes with high thermal stability and thermoplastic properties

Enhancement of intermolecular bonding, thermal and tensile properties of polyurethane-urea-silica hybrids films

Properties of polyimide hybrids with mixed metal oxide

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