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Article: Synthesis and characterization of novel highly branched block copoly(urethane-imide)s based on pentaerythritol, different diisocyanate and aromatic dianhydride
Title | Synthesis and characterization of novel highly branched block copoly(urethane-imide)s based on pentaerythritol, different diisocyanate and aromatic dianhydride | ||||
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Authors | |||||
Keywords | Condensation polymerization Copoly(urethane-imide)s (CoPUIs) Dianhydrides Polyimides Synthesis | ||||
Issue Date | 2010 | ||||
Publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-8995/ | ||||
Citation | Journal Of Applied Polymer Science, 2010, v. 118 n. 1, p. 99-104 How to Cite? | ||||
Abstract | In this work, we for the first time prepared a series of novel highly branched block copoly (urethane-imide)s (CoPUIs) successfully by the condensation polymerization of star-like prepolymers and dianhydrides, (including pyromellitic dianhydride (PMDA), 3,3',4,4'- benzophenonetetracarboxylic dianhydride, and 4,4'-oxydiphthalic anhydride) and the star-like prepolymers were synthesized from pentaerythritol (PAT) and toluene-2,4-diisocyanate (TDI) or isophorone diisocyanate. Our results revealed that it took about 40 min to complete the prepolymerization of PAT and TDI at 40°C. In addition, the imidization of the prepolymer and PMDA was successfully carried out at 120°C for 2 h. The X-ray diffractometer patterns exhibited that the resulting CoPUIs presented heterogenous structure with the d-spacing around 0.40 nm. Differential scanning calorimeter curves showed that the T g of these CoPUIs ranged from 214 to 229°C in N 2 atmosphere. Thermogravimetric analyzer curves indicated that these synthesized CoPUIs had obviously two steps of weight loss in N 2 atmosphere due to the used monomers which decomposed at 230-235°C and 602-644°C, respectively. The solubility testing results showed that the highly branched block CoPUIs had desirable solubility in several strong polar aprotic solvents and exhibited a strong resistance to dilute acid corrosion. © 2010 Wiley Periodicals, Inc. | ||||
Persistent Identifier | http://hdl.handle.net/10722/139543 | ||||
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.557 | ||||
ISI Accession Number ID |
Funding Information: This work was financially supported by the Natural Science Foundation of Hubei Province. Authors also acknowledge the Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials for providing necessary facilities. | ||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chen, W | en_HK |
dc.contributor.author | Chen, C | en_HK |
dc.contributor.author | Yan, W | en_HK |
dc.contributor.author | Yi, C | en_HK |
dc.contributor.author | Wu, S | en_HK |
dc.contributor.author | Yeung, KWK | en_HK |
dc.contributor.author | Xu, Z | en_HK |
dc.date.accessioned | 2011-09-23T05:51:29Z | - |
dc.date.available | 2011-09-23T05:51:29Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Journal Of Applied Polymer Science, 2010, v. 118 n. 1, p. 99-104 | en_HK |
dc.identifier.issn | 0021-8995 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/139543 | - |
dc.description.abstract | In this work, we for the first time prepared a series of novel highly branched block copoly (urethane-imide)s (CoPUIs) successfully by the condensation polymerization of star-like prepolymers and dianhydrides, (including pyromellitic dianhydride (PMDA), 3,3',4,4'- benzophenonetetracarboxylic dianhydride, and 4,4'-oxydiphthalic anhydride) and the star-like prepolymers were synthesized from pentaerythritol (PAT) and toluene-2,4-diisocyanate (TDI) or isophorone diisocyanate. Our results revealed that it took about 40 min to complete the prepolymerization of PAT and TDI at 40°C. In addition, the imidization of the prepolymer and PMDA was successfully carried out at 120°C for 2 h. The X-ray diffractometer patterns exhibited that the resulting CoPUIs presented heterogenous structure with the d-spacing around 0.40 nm. Differential scanning calorimeter curves showed that the T g of these CoPUIs ranged from 214 to 229°C in N 2 atmosphere. Thermogravimetric analyzer curves indicated that these synthesized CoPUIs had obviously two steps of weight loss in N 2 atmosphere due to the used monomers which decomposed at 230-235°C and 602-644°C, respectively. The solubility testing results showed that the highly branched block CoPUIs had desirable solubility in several strong polar aprotic solvents and exhibited a strong resistance to dilute acid corrosion. © 2010 Wiley Periodicals, Inc. | en_HK |
dc.language | eng | en_US |
dc.publisher | John Wiley & Sons, Inc. The Journal's web site is located at http://www.interscience.wiley.com/jpages/0021-8995/ | en_HK |
dc.relation.ispartof | Journal of Applied Polymer Science | en_HK |
dc.rights | Journal of Applied Polymer Science. Copyright © John Wiley & Sons, Inc. | - |
dc.subject | Condensation polymerization | en_HK |
dc.subject | Copoly(urethane-imide)s (CoPUIs) | en_HK |
dc.subject | Dianhydrides | en_HK |
dc.subject | Polyimides | en_HK |
dc.subject | Synthesis | en_HK |
dc.title | Synthesis and characterization of novel highly branched block copoly(urethane-imide)s based on pentaerythritol, different diisocyanate and aromatic dianhydride | en_HK |
dc.type | Article | en_HK |
dc.identifier.email | Yeung, KWK:wkkyeung@hkucc.hku.hk | en_HK |
dc.identifier.authority | Yeung, KWK=rp00309 | en_HK |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/app.32398 | en_HK |
dc.identifier.scopus | eid_2-s2.0-77955943633 | en_HK |
dc.identifier.hkuros | 192175 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-77955943633&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 118 | en_HK |
dc.identifier.issue | 1 | en_HK |
dc.identifier.spage | 99 | en_HK |
dc.identifier.epage | 104 | en_HK |
dc.identifier.isi | WOS:000280536400013 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | Chen, W=25925712200 | en_HK |
dc.identifier.scopusauthorid | Chen, C=25123496000 | en_HK |
dc.identifier.scopusauthorid | Yan, W=7402221278 | en_HK |
dc.identifier.scopusauthorid | Yi, C=7101997365 | en_HK |
dc.identifier.scopusauthorid | Wu, S=15125218800 | en_HK |
dc.identifier.scopusauthorid | Yeung, KWK=13309584700 | en_HK |
dc.identifier.scopusauthorid | Xu, Z=7405427789 | en_HK |
dc.identifier.issnl | 0021-8995 | - |