The multiple melting endotherms from poly(butylene terephthalate)
dc.contributor.author | Nichols, Mark E. | en_US |
dc.contributor.author | Robertson, Richard E. | en_US |
dc.date.accessioned | 2006-04-28T18:20:26Z | |
dc.date.available | 2006-04-28T18:20:26Z | |
dc.date.issued | 1992-06 | en_US |
dc.identifier.citation | Nichols, Mark E.; Robertson, Richard E. (1992)."The multiple melting endotherms from poly(butylene terephthalate)." Journal of Polymer Science Part B: Polymer Physics 30(7): 755-768. <http://hdl.handle.net/2027.42/38865> | en_US |
dc.identifier.issn | 0887-6266 | en_US |
dc.identifier.issn | 1099-0488 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/38865 | |
dc.description.abstract | The melting behavior of poly(butylene terephthalate) (PBT) has been investigated, and a simulation has been performed to determine whether the multiple melting endotherms observed during the thermal analysis of PBT can be explained by the simultaneous melting and recrystallization of an initial distribution of crystal melting temperatures that contains only one maximum and two inflection points. Specimens that were cooled at constant rates from the melt showed between one and three melting endotherms upon heating in a differential scanning calorimeter (DSC). The position and breadth of the crystallization exotherms upon cooling from the melt and small-angle x-ray scattering showed that as the cooling rate is increased, the distribution of melting temperatures broadens and shifts to lower temperatures. By combining temperature-dependent recrystallization with an initial distribution of melting temperatures, simulated DSC curves were produced that agreed well with experimental DSC curves. In instances of triple peaked curves, the high temperature peak was due to crystals formed during the scanning process, and the middle and low temperature peaks were due to crystals originally present in the material. Satisfactory agreement between the experimental and simulated curves was found without considering additional crystallization from the amorphous regions during the scanning process. | en_US |
dc.format.extent | 921756 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | John Wiley & Sons, Inc. | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Polymer and Materials Science | en_US |
dc.title | The multiple melting endotherms from poly(butylene terephthalate) | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Materials Science and Engineering | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 | en_US |
dc.contributor.affiliationum | Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109-2136 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/38865/1/090300713_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/polb.1992.090300713 | en_US |
dc.identifier.source | Journal of Polymer Science Part B: Polymer Physics | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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