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On the crystallization behavior of a poly(stearyl methacrylate) comb-like polymer inside a nanoscale environment

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Abstract

Using a composite “hard” and “soft” template, approached by a macroscopic polystyrene (PS) matrix and a microscopic coaxial nanofiber, the crystallization of poly(stearyl methacrylate) (PSMA), a comb-like polymer under nanoscale conditions was explored. Crystalline structures and morphologies of a polyethylene terephthalate (PET)/PSMA nanofiber (NF) and PET/PSMA@PS composite membrane (CM) were characterized by differential scanning calorimetry, scanning electron microscopy, and transmission electron microscopy. Regulated by an orientated PET NF shell and PS matrix, the PSMA inner core showed a nanosize-dependent crystallization phenomenon. A “hard” or “soft” condition was approached by controlling the annealing temperature below 60 °C or above 120 °C, respectively. Confined crystallization in the entrapped PSMA was demonstrated, and PET/PSMA@PS CM showed a longer half-time of crystallization (t1/2 = 1.69) than that of PET/PSMA NF (t1/2 = 1.14). Therefore, against bulk PSMA (t1/2 = 0.61), the increased crystallization time under nanoscale conditions was attributed to the reduced chain relaxation and mobility of alkyl groups.

Graphical abstract: On the crystallization behavior of a poly(stearyl methacrylate) comb-like polymer inside a nanoscale environment

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Publication details

The article was received on 16 Aug 2018, accepted on 25 Oct 2018 and first published on 26 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01378K
Citation: CrystEngComm, 2018, Advance Article
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    On the crystallization behavior of a poly(stearyl methacrylate) comb-like polymer inside a nanoscale environment

    S. Li, H. Wang, L. Liu, H. Xu and H. Shi, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE01378K

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