Polymer paperA model for chain folding in polymer crystals: rough growth faces are consistent with the observed growth rates
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Cited by (136)
The rise of semicrystalline polymers and why are they still interesting
2020, PolymerCitation Excerpt :The molecular nucleation conception, later discussed in Hu's work on intra-molecular nucleation [59], explains tie chain and molecular weight-dependent crystallization kinetics and fractionation during crystallization. While the HL model focuses on enthalpy barriers of crystallization, Sadler and Gilmer proposed a drastically different crystallization framework based on the entropy barrier of nucleation [83]. They argued that, contrary to the HL theory, the nucleation barrier is completely entropic and upon crystallization, if one segment adopts a wrong configuration, the subsequent deposition of stems will be blocked, crystallization can only be resumed after the wrong conformation is removed.
The physics of polymer chain-folding
2018, Physics ReportsCitation Excerpt :The model assumes that the first stem or a part of it lays down on the smooth growth front will take over the free energy barrier of secondary nucleation, and the subsequent stems with an a priori assumption of adjacent folding pay back the credit [71]. Controversial ideas against the secondary nucleation model as the rate-determining step of polymer crystal growth have been proposed, such as the rough-surface growth [72–74], the pre-existing bundles [75–78] and the intermediate mesophase [79–82]. However, like the Lauritzen–Hoffman model, they all took chain-folding as an a priori assumption.
Introduction on crystallization in multiphase polymer systems
2018, Crystallization in Multiphase Polymer SystemsInsights from polymer crystallization: Chirality, recognition and competition
2017, Chinese Chemical LettersCrystallization of polyethylene: A molecular dynamics simulation study of the nucleation and growth mechanisms
2015, PolymerCitation Excerpt :As the systems were of different chemical composition (one was polyethylene the other PVA) agreement was not neccessarily expected, but one might have hoped to find a generally applicable picture. At the same time neither of the simulation results is consistent with the classical theories on polymer crystallization presented by Lauritzen and Hoffman (LH) [53] and Sadler and Gilmer (SD) [54]. In this article, we present a detailed analysis of the formation of crystal nuclei and revisit the molecular mechanism of crystal growth from the melt in polyethylene.
Simulation of secondary nucleation of polymer crystallization via a model of microscopic kinetics
2015, Chinese Chemical Letters
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