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Raising glass transition temperature of polymer nanofilms concerning with negative interface energy

Abstract

Based on a thermodynamic approach, glass transition temperature (Tg) of substrate-supported polymer nanofilms (s-PNFs) is investigated for carbon-chain polymers by considering the role of the interface energy. Relative to the Tg depression originated from the positive interface energy due to the weak interfacial van der Waals interaction, the Tg enhancement occurs reversely induced by the negative interface energy induced by the hydrogen bonds formed between the side-chains of polymers and the surface hydroxyl groups of substrates. Moreover, the Tg enhancement can be reinforced for s-PNFs with simple side-chains. The model predictions agree well with available experimental or simulation results.

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Publication details

The article was received on 27 Nov 2018, accepted on 06 Feb 2019 and first published on 07 Feb 2019


Article type: Paper
DOI: 10.1039/C8CP07267A
Citation: Phys. Chem. Chem. Phys., 2019, Accepted Manuscript

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    Raising glass transition temperature of polymer nanofilms concerning with negative interface energy

    X. Yao, Y. Wang, X. Lang, Y. Zhu and Q. Jiang, Phys. Chem. Chem. Phys., 2019, Accepted Manuscript , DOI: 10.1039/C8CP07267A

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