Blends of highly branched and linear poly(arylene ether sulfone)s: multiscale effect of the degree of branching on the morphology and mechanical properties

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Seviniş Özbulut, Emine Billur and Seven, Merve Senem and Bilge, Kaan and Akkaş, Tuğçe and Taş, Cüneyt Erdinç and Yıldız, Burçin and Atılgan, Canan and Menceloğlu, Yusuf Z. and Ünal, Serkan (2020) Blends of highly branched and linear poly(arylene ether sulfone)s: multiscale effect of the degree of branching on the morphology and mechanical properties. Polymer, 188 . ISSN 0032-3861 (Print) 1873-2291 (Online)

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Abstract

This study reports the synthesis of highly branched poly(arylene ether sulfone)s (HBPAES) and their incorporation into linear poly(arylene ether sulfone) (LPAES) to investigate the effect of branched topology on the morphological and mechanical properties of final polymer blends. The A2 + B3 polymerization was utilized to synthesize HBPAESs with varying distance between branch points by reacting monomeric 4,4′-dichlorodiphenyl sulfone (DCDPS) or pre-synthesized chlorine terminated linear oligomers with various degrees of polymerization as the A₂ species with 1,1,1-tris(4-hydroxyphenyl)ethane (THPE) as the B₃ monomer. The chemical structure and the degree of branching of synthesized HBPAESs were characterized by 1H Nuclear Magnetic Resonance (NMR) spectroscopy, while Size Exclusion Chromatography (SEC) and Differential Scanning Calorimetry (DSC) were used for the determination of their molecular weight and glass transition temperatures. Polymer blends of HBPAES and LPAES (10/90 w/w) were solution cast into free-standing, dry films and characterized by tensile tests, Dynamic Mechanical Analysis (DMA), Atomic Force (AFM) and Scanning Electron (SEM) Microscopies. Complementary to experimental studies, these blends were modeled with dissipative particle dynamics (DPD) simulations to explain their microphase behavior, miscibility, and morphology. The experimental and computational studies together revealed that understanding the effect of the degree of branching on the intermolecular interactions of highly branched polymers with their linear analogues is critical to obtain final polymer blends with tunable mechanical properties and enhanced fracture behavior.
Item Type: Article
Uncontrolled Keywords: Poly(arylene ether sulfone); Highly branched; Hyperbranched; A(2)+B-3 polymerization; Oligomer synthesis; Polymer blends; Coarse grained polymer models
Divisions: Integrated Manufacturing Technologies Research and Application Center
Sabancı University Nanotechnology Research and Application Center
Faculty of Engineering and Natural Sciences > Basic Sciences > Mathematics
Faculty of Engineering and Natural Sciences
Depositing User: Merve Senem Seven
Date Deposited: 19 Sep 2020 18:14
Last Modified: 26 Apr 2022 10:18
URI: https://research.sabanciuniv.edu/id/eprint/40407

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