Annealing effects of polymers and their underlying molecular mechanisms
dc.contributor.author | Yeh, Gregory S. Y. | en_US |
dc.contributor.author | Hosemann, R. | en_US |
dc.contributor.author | Loboda-Cackovic, J. | en_US |
dc.contributor.author | Cackovic, H. | en_US |
dc.date.accessioned | 2006-04-07T16:29:40Z | |
dc.date.available | 2006-04-07T16:29:40Z | |
dc.date.issued | 1976-04 | en_US |
dc.identifier.citation | Yeh, G. S. Y., Hosemann, R., Loboda-Cackovic, J., Cackovic, H. (1976/04)."Annealing effects of polymers and their underlying molecular mechanisms." Polymer 17(4): 309-318. <http://hdl.handle.net/2027.42/21799> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6TXW-48CWV9S-3G/2/05368b488a6fc4df883ef673bb963566 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/21799 | |
dc.description.abstract | This paper indicates that changes in chain mobility, heat capacity, WAXS crystallinity, SAXS long period, SAXS peak intensity, specific volume and morphology as a function of increasing temperature, occur in three fairly distinct annealing ranges (I, II and III) that are more or less the same for all crystallized polymers with a lamellar morphology. It is shown that none of the proposed molecular models to date, including the well-known fold surface premelting model, can satisfactorily account for all the experimental data. However, a new molecular interpretation, based primarily on electron microscopy and SAXS studies of changes such as lateral `melting' from edges of microparacrystallites (mPC) within the lamellae seen at the annealing temperatures can account for the data. With our new molecular interpretation, the effect of temperature increase is established to result in a slight breakup of the laterally aligned mPC within the lamellae at low annealing temperatures in range I, and selective lateral `melting' of the exposed mPC and recrystallization at higher annealing temperatures in ranges II and III, with the recrystallization being very limited in range III. Annealing effects seen in cold- or hot-drawn polymers with a fibrillar morphology can also be readily accounted for by this very general molecular mechanism occurring in the same annealing temperature ranges. | en_US |
dc.format.extent | 1453814 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Annealing effects of polymers and their underlying molecular mechanisms | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Management | en_US |
dc.subject.hlbsecondlevel | Chemistry | en_US |
dc.subject.hlbsecondlevel | Chemical Engineering | en_US |
dc.subject.hlbsecondlevel | Economics | en_US |
dc.subject.hlbtoplevel | Business | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | University of Michigan, Ann Arbor, Michigan 98104, USA | en_US |
dc.contributor.affiliationother | Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, West Germany | en_US |
dc.contributor.affiliationother | Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, West Germany | en_US |
dc.contributor.affiliationother | Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, West Germany | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/21799/1/0000198.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0032-3861(76)90187-7 | en_US |
dc.identifier.source | Polymer | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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