dc.contributor.author | Wang, Zefan | |
dc.contributor.author | Dong, Xia | |
dc.contributor.author | Cavallo, Dario | |
dc.contributor.author | Müller Sánchez, Alejandro Jesús | |
dc.contributor.author | Wang, Dujin | |
dc.date.accessioned | 2019-06-03T14:20:49Z | |
dc.date.available | 2019-06-03T14:20:49Z | |
dc.date.issued | 2018-08-02 | |
dc.identifier.citation | Macromolecules 51(15): 6037−6046 (2018) | es_ES |
dc.identifier.issn | 0024-9297 | |
dc.identifier.uri | http://hdl.handle.net/10810/33073 | |
dc.description.abstract | The formation of Form I nuclei of polybutene-1 (PB-1) and its copolymer with polyethylene (PB1-ran-PE) has been studied by means of modified self-nucleation protocols. Even when the self-nucleation temperature was high enough and all Form II crystals melt, re-crystallization can be accelerated if the melt-crystallized sample was annealed at low temperatures (below 60 oC for PB-1 and 75 oC for PB1-ran-PE) for just 3 min. These results suggest the formation of latent Form I nuclei within Form II crystals. This hypothesis is consistent with the observed growth of a small amount of Form I crystals during heating, after previous annealing at temperature lower than 20 °C. In addition, a peculiar phenomenon was found in PB1-ran-PE, as both Form II and Form I′ can be induced by the presence of latent Form I nuclei, due to cross-nucleation and self-nucleation effects, respectively. The final ratio of the two kinds of crystal Forms is a result of the competition between the two nucleation rates, which strongly depend on crystallization temperature. In this work, we have shown that careful design of novel self-nucleation protocols can yield evidence of the early stages of Form II to Form I transition, even when the degree of transformed crystals is below the limit of detection of conventional techniques sensitive to crystalline order (DSC, WAXD, FTIR). | es_ES |
dc.description.sponsorship | Financial supports from the National Science Foundation of China (Grant No. U1510207) and the Key Program for Coal-based Science and Technology of Shanxi Province (MH-2014-08) are gratefully acknowledged. We would also like to thank the support of the Research and Innovation Staff Exchange (RISE) BIODEST H2020-MSCA-RISE-2017-778092 project. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/778092 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | Polybutene-1 | es_ES |
dc.subject | Butene-1/ethylene copolymer | es_ES |
dc.subject | polymorphic transformation | es_ES |
dc.subject | self-nucleation | es_ES |
dc.subject | crystalline memory | es_ES |
dc.title | Promotion of self-nucleation with latent Form I nuclei in polybutene-1 and its copolymer | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | Copyright © 2018 American Chemical Society | es_ES |
dc.relation.publisherversion | https://pubs.acs.org/doi/10.1021/acs.macromol.8b01313 | es_ES |
dc.identifier.doi | 10.1021/acs.macromol.8b01313 | |
dc.contributor.funder | European Commission | |
dc.departamentoes | Ciencia y tecnología de polímeros | es_ES |
dc.departamentoeu | Polimeroen zientzia eta teknologia | es_ES |