Fracture toughness and fracture mechanisms of PBT/PC/IM blends PART IV Impact toughness and failure mechanisms of PBT/PC blends without impact modifier
dc.contributor.author | Wu, Jingshen | en_US |
dc.contributor.author | Yu, D.-M. | en_US |
dc.contributor.author | Mai, Yiu-Wing | en_US |
dc.contributor.author | Yee, Albert F. | en_US |
dc.date.accessioned | 2006-09-11T15:14:33Z | |
dc.date.available | 2006-09-11T15:14:33Z | |
dc.date.issued | 2000-01 | en_US |
dc.identifier.citation | Wu, J.; Yu, D.-M.; Mai, Y.-W.; Yee, A. F.; (2000). "Fracture toughness and fracture mechanisms of PBT/PC/IM blends PART IV Impact toughness and failure mechanisms of PBT/PC blends without impact modifier." Journal of Materials Science 35(2): 307-315. <http://hdl.handle.net/2027.42/44763> | en_US |
dc.identifier.issn | 1573-4803 | en_US |
dc.identifier.issn | 0022-2461 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/44763 | |
dc.description.abstract | In this part of the series, the impact behaviour of the PBT and PC blends without impact modifier was studied. Failure mechanism of the blends under various conditions was discussed. It was found that the key toughening process, i.e. interfacial debonding-cavitation, was disabled when the blends were subjected to impact loading. Hence, the fracture of the thick PBT/PC specimens with strong interface occurred under plane-strain condition. Their impact toughness obeys the rule of mixtures and synergistic toughening could not be achieved. When thinner specimens were tested, the fracture took place under non-plane-strain condition. But, the toughness of the blends was much lower than the value predicted by the rule of mixtures. Negative blending effect was obtained. Study on the strain rate effect suggests that under impact loading, the PC domains in the blends are subjected to an additional plastic constraint imposed by the neighboring PBT matrix, which is more rigid at a higher strain rate. Since fracture of the PC is highly sensitive to the plastic constraint at the crack-tip, the PBT imposed high plastic constraint promotes brittle fracture of the PC, leading to a deteriorated impact resistance. Evidences from TEM, SEM and OM studies support the mechanism proposed. Based on this mechanism, some suggestions on the selection of polymer components and design of microstructure for rigid-rigid polymer blends are also given. | en_US |
dc.format.extent | 1058916 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Kluwer Academic Publishers; Springer Science+Business Media | en_US |
dc.subject.other | Characterization and Evaluation Materials | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Polymer Sciences | en_US |
dc.subject.other | Industrial Chemistry/Chemical Engineering | en_US |
dc.subject.other | Mechanics | en_US |
dc.title | Fracture toughness and fracture mechanisms of PBT/PC/IM blends PART IV Impact toughness and failure mechanisms of PBT/PC blends without impact modifier | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Materials Science and Engineering | en_US |
dc.subject.hlbsecondlevel | Engineering (General) | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Materials Science and Engineering, The University of Michigan, Ann Arbor, MI, 48109, USA | en_US |
dc.contributor.affiliationother | Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong | en_US |
dc.contributor.affiliationother | Centre for Advanced Materials Technology, Department of Mechanical & Mechatronic Engineering (CAMT), University of Sydney, Sydney, NSW, 2006, Australia | en_US |
dc.contributor.affiliationother | Department of Mechanical Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/44763/1/10853_2004_Article_254468.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1023/A:1004741200924 | en_US |
dc.identifier.source | Journal of Materials Science | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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