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DC Field | Value | Language |
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dc.citation.endPage | 2821 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 2813 | - |
dc.citation.title | POLYMER | - |
dc.citation.volume | 47 | - |
dc.contributor.author | Qin, H | - |
dc.contributor.author | Mather, PT | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.contributor.author | Tan, LS | - |
dc.date.accessioned | 2023-12-22T10:07:20Z | - |
dc.date.available | 2023-12-22T10:07:20Z | - |
dc.date.created | 2014-09-16 | - |
dc.date.issued | 2006-04 | - |
dc.description.abstract | As a continuation of previous work involving synthesis of an allyl-functionalized hyperbranched polyimide, AT-PAEKI, we have studied the use of this reactive polymer as a modifier of bisphenol-A based bismaleimide resin (BPA-BMI). This was pursued in anticipation of improvements in processability as well as physical properties including glass transition temperature, elastic modulus, and fracture toughness. Apparent miscibility, indicated by optical clarity with a single Tg, was observed for compositions containing up to 16 wt% AT-PAEKI. Additionally, we observed complete suppression of monomer crystallization and a slight increase in the overall cure exotherm. By rheological characterization, blends containing 4 wt% AT-PAEKI were found to feature a dramatic (65-fold) reduction in the viscosity minimum during heating. Dynamic mechanical analysis (DMA) showed that the addition of 2, 4, 8 wt%. AT-PAEKI increases the cured modulus by approximately 10% from a base value of 3.4 GPa, while adding 16 wt% AT-PAEKI decreases the modulus slightly to 3.3 GPa. DMA also revealed that the cured glass transition temperature increases monotonically with the addition of AT-PAEKI. Fracture toughness was gauged using the single edge notched beam methodology to yield the critical stress intensity factor, KIC. Our results showed a modest toughening effect (from 0.48 to 0.55 MPa m1/2) upon the addition of AT-PAEKI. We conclude that AT-PAEKI may serve as an effective reactive processing aid with slight improvements in Tg, modulus, and fracture toughness. | - |
dc.identifier.bibliographicCitation | POLYMER, v.47, no.8, pp.2813 - 2821 | - |
dc.identifier.doi | 10.1016/j.polymer.2006.02.062 | - |
dc.identifier.issn | 0032-3861 | - |
dc.identifier.scopusid | 2-s2.0-33646191522 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/6050 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33646191522 | - |
dc.identifier.wosid | 000236817700026 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | Modification of bisphenol-A based bismaleimide resin (BPA-BMI) with an allyl-terminated hyperbranched polyimide (AT-PAEKI) | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | chemorheology | - |
dc.subject.keywordAuthor | hyperbranched polymer | - |
dc.subject.keywordAuthor | fracture toughness | - |
dc.subject.keywordPlus | THERMOPLASTIC-TOUGHENED THERMOSETS | - |
dc.subject.keywordPlus | AROMATIC POLY(ETHER IMIDE)S | - |
dc.subject.keywordPlus | POLYMER BLENDS | - |
dc.subject.keywordPlus | EPOXY-RESINS | - |
dc.subject.keywordPlus | POLYESTERS | - |
dc.subject.keywordPlus | POLYAMIDE | - |
dc.subject.keywordPlus | KETONES) | - |
dc.subject.keywordPlus | PROCESSABILITY | - |
dc.subject.keywordPlus | NUMBER | - |
dc.subject.keywordPlus | UNITS | - |
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