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Article: Optical transparency and light colour of highly soluble fluorinated polyimides derived from a novel pyridine-containing diamine m, p-3FPAPP and various aromatic dianhydrides

TitleOptical transparency and light colour of highly soluble fluorinated polyimides derived from a novel pyridine-containing diamine m, p-3FPAPP and various aromatic dianhydrides
Authors
Keywordsfluorinated polyimides
light color
Pyridine-containing diamine
solubility
thermal stability
transparency
Issue Date2011
PublisherV S P. The Journal's web site is located at http://www.brill.nl/m_catalogue_sub6_id9721.htm
Citation
Designed Monomers And Polymers, 2011, v. 14 n. 6, p. 579-592 How to Cite?
AbstractA novel pyridine-containing aromatic diamine monomer, 4-(4- trifluoromethylphenyl)-2,6-bis[3-(4-aminophenoxy)phenyl]pyridine (m,p-3FPAPP), was successfully synthesized by a modified Chichibabin reaction of 4-trifluoromethylbenzaldehyde and a substituted acetophenone, 3-(4-nitrophenoxy)acetophenone (m,p-NPAP), followed by a reduction of the resulting dinitro compound 4-(4-trifluoromethylphenyl)-2,6bis[3-(4-nitrophenoxy) phenyl] pyridine (m,p-3FPNPP) with Pd/C and hydrazine monohydrate. The aromatic diamine was employed to synthesize a series of pyridine-containing polyimides by polycondensation with various aromatic dianhydrides in N,N-dimethylformamide (DMF) via the conventional two-step method, and further thermal or chemical imidization forming polyimides. The inherent viscosities of the resulting poly(amic acid)s and polyimides were 0.62-0.89 and 0.58-0.69 dl/g, and most of the polyimides obtained by chemical imidization were readily soluble in common organic solvents such as DMF, N,N-dimethylacetamide (DMAc), N-methyl-2- pyrrolidone (NMP) and tetrahydrofuran (THF). Meanwhile, strong and flexible polyimide films were obtained, which had good thermal stability, with a glass transition temperature (T g) of 234.4-246.6°C and the temperature at 10% weight loss of 561.4-600.6°C in nitrogen atmosphere, and good optical transparency with the cut-off wavelengths of 369-378 nm, as well as outstanding mechanical properties with tensile strengths of 89.5-96.4 MPa, a tensile modulus of 1.52-1.63 GPa and elongation-at-break of 7.2-8.7%. The polyimide films also were found to possess low water uptake (0.61-0.79%). © 2011 Koninklijke Brill NV, Leiden.
Persistent Identifierhttp://hdl.handle.net/10722/159747
ISSN
2014 Impact Factor: 2.780
2014 SCImago Journal Rankings: 0.607
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYan, Sen_HK
dc.contributor.authorChen, Wen_HK
dc.contributor.authorYan, Wen_HK
dc.contributor.authorHuang, Men_HK
dc.contributor.authorChen, Cen_HK
dc.contributor.authorXu, Zen_HK
dc.contributor.authorYeung, KWKen_HK
dc.contributor.authorYi, Cen_HK
dc.date.accessioned2012-08-16T05:55:30Z-
dc.date.available2012-08-16T05:55:30Z-
dc.date.issued2011en_HK
dc.identifier.citationDesigned Monomers And Polymers, 2011, v. 14 n. 6, p. 579-592en_HK
dc.identifier.issn1385-772Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/159747-
dc.description.abstractA novel pyridine-containing aromatic diamine monomer, 4-(4- trifluoromethylphenyl)-2,6-bis[3-(4-aminophenoxy)phenyl]pyridine (m,p-3FPAPP), was successfully synthesized by a modified Chichibabin reaction of 4-trifluoromethylbenzaldehyde and a substituted acetophenone, 3-(4-nitrophenoxy)acetophenone (m,p-NPAP), followed by a reduction of the resulting dinitro compound 4-(4-trifluoromethylphenyl)-2,6bis[3-(4-nitrophenoxy) phenyl] pyridine (m,p-3FPNPP) with Pd/C and hydrazine monohydrate. The aromatic diamine was employed to synthesize a series of pyridine-containing polyimides by polycondensation with various aromatic dianhydrides in N,N-dimethylformamide (DMF) via the conventional two-step method, and further thermal or chemical imidization forming polyimides. The inherent viscosities of the resulting poly(amic acid)s and polyimides were 0.62-0.89 and 0.58-0.69 dl/g, and most of the polyimides obtained by chemical imidization were readily soluble in common organic solvents such as DMF, N,N-dimethylacetamide (DMAc), N-methyl-2- pyrrolidone (NMP) and tetrahydrofuran (THF). Meanwhile, strong and flexible polyimide films were obtained, which had good thermal stability, with a glass transition temperature (T g) of 234.4-246.6°C and the temperature at 10% weight loss of 561.4-600.6°C in nitrogen atmosphere, and good optical transparency with the cut-off wavelengths of 369-378 nm, as well as outstanding mechanical properties with tensile strengths of 89.5-96.4 MPa, a tensile modulus of 1.52-1.63 GPa and elongation-at-break of 7.2-8.7%. The polyimide films also were found to possess low water uptake (0.61-0.79%). © 2011 Koninklijke Brill NV, Leiden.en_HK
dc.languageengen_US
dc.publisherV S P. The Journal's web site is located at http://www.brill.nl/m_catalogue_sub6_id9721.htmen_HK
dc.relation.ispartofDesigned Monomers and Polymersen_HK
dc.subjectfluorinated polyimidesen_HK
dc.subjectlight coloren_HK
dc.subjectPyridine-containing diamineen_HK
dc.subjectsolubilityen_HK
dc.subjectthermal stabilityen_HK
dc.subjecttransparencyen_HK
dc.titleOptical transparency and light colour of highly soluble fluorinated polyimides derived from a novel pyridine-containing diamine m, p-3FPAPP and various aromatic dianhydridesen_HK
dc.typeArticleen_HK
dc.identifier.emailYeung, KWK:wkkyeung@hkucc.hku.hken_HK
dc.identifier.authorityYeung, KWK=rp00309en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1163/156855511X598669en_HK
dc.identifier.scopuseid_2-s2.0-80055068272en_HK
dc.identifier.hkuros204522en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80055068272&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume14en_HK
dc.identifier.issue6en_HK
dc.identifier.spage579en_HK
dc.identifier.epage592en_HK
dc.identifier.isiWOS:000297806300005-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridYan, S=36018779300en_HK
dc.identifier.scopusauthoridChen, W=25925712200en_HK
dc.identifier.scopusauthoridYan, W=39262757600en_HK
dc.identifier.scopusauthoridHuang, M=37039163300en_HK
dc.identifier.scopusauthoridChen, C=36018145300en_HK
dc.identifier.scopusauthoridXu, Z=12760201200en_HK
dc.identifier.scopusauthoridYeung, KWK=13309584700en_HK
dc.identifier.scopusauthoridYi, C=7101997365en_HK

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