Synthesis and physical gelation induced by self-assembly of well-defined poly(arylene ether sulfone)s with various numbers of arms

Park, Jeyoung; Seo, Myungeun; Choi, Hyungsam

doi:10.1039/c0py00418a

Cited by 17 publications

(9 citation statements)

References 47 publications

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“…Carbonate-type soft segments interrupted hydrogen bonding in the hard segments by better miscibility than that of ether-type soft segments, and co-diols enhanced the effectiveness [ 32 ]. All TPUs containing carbonate-type soft segments showed both free C=O stretching at 1737 cm −1 and hydrogen bonded C=O stretching red-shifted at 1700 cm −1 [ 50 ]. Unlike TPU containing ether-type soft segments showing larger absorbance at hydrogen bonded stretching, M1-1K-TPU showed larger absorbance at free stretching because of carbonate units within soft aliphatic chains.…”

Section: Resultsmentioning

confidence: 99%

Environmentally-Friendly Synthesis of Carbonate-Type Macrodiols and Preparation of Transparent Self-Healable Thermoplastic Polyurethanes

et al. 2017

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Carbonate-type macrodiols synthesized by base-catalyzed polycondensation of co-diols and dimethyl carbonate as an environmentally-friendly route were subsequently utilized for the preparation of transparent and self-healable thermoplastic polyurethanes (TPUs) containing a carbonate-type soft segment. Three types of macrodiols, obtained from mono, dual and triple diol-monomers for target molecular weights of 1 and 1.5 kg mol −1 , were analyzed by 1 H NMR integration and the OH titration value. Colorless transparent macrodiols in a liquid state at a room temperature of 20 • C were obtained, except the macrodiol from mono 1,6-hexanediol. Before TPU synthesis, macrodiols require pH neutralization to prevent gelation. TPUs synthesized by a solution pre-polymer method with 4,4 -methylene(bisphenyl isocyanate) and 1,4-butanediol as a chain extender exhibited moderate molecular weights, good transparencies and robust mechanical properties. Especially, the incorporation of 3-methyl-1,5-pentanediol within carbonate-type macrodiols enhanced the transparency of the resultant TPUs by decreasing the degree of microphase separation evidenced by ATR-FTIR and DSC. Interestingly, packing density of hard segments and the degree of microphase separation determined the self-healing efficiency of TPUs, which showed good performances in the case of sourced macrodiols from triple diol-monomers.

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Section: Resultsmentioning

confidence: 99%

Environmentally-Friendly Synthesis of Carbonate-Type Macrodiols and Preparation of Transparent Self-Healable Thermoplastic Polyurethanes

et al. 2017

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“…Chain‐growth condensation polymerization (CGCP) allows a precise control of the molecular weight and molecular weight distribution of condensation polymers, providing unique solution properties . Well‐defined polymer brushes could be synthesized via surface‐initiated CGCP from appropriately designed initiators and monomers.…”

Section: Methodsmentioning

confidence: 99%

Grafting of trifluoromethylated poly(phenylene oxide)s on a single‐walled carbon nanotube via surface‐initiated chain‐growth condensation polymerization

Park

Kim

et al. 2017

J. Polym. Sci. Part A: Polym. Chem.

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In this study, single‐walled carbon nanotubes (SWNTs) were modified with trifluoromethylated poly(phenylene oxide)s via surface‐initiated chain‐growth condensation polymerization (CGCP) to enhance the solubility of SWNTs in various organic solvents. The gradual increase in solubility of the SWNT with polymer growth was monitored by the color change of the reaction mixture and by UV/Vis/NIR absorption spectroscopy.

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“…We also performed a control experiment by homopolymerizing the monomer 2 in the presence of presynthesized homopolymer of the monomer 1, which was synthesized via chain-growth condensation polymerization and contained only fluorine end groups. 30 A 13 C NMR spectrum of the resulting polymer showed fluorine chain ends from both monomers, indicating that the monomer 2 was inserted into polymer chains of the monomer 1 via transetherification (Fig. S5).…”

Section: Synthesis Of Partially Sulfonated Poly(arylene Ether Sulfone)smentioning

confidence: 99%

Synthesis and self-assembly of partially sulfonated poly(arylene ether sulfone)s and their role in the formation of Cu₂S nanowires

Park

Yim

et al. 2015

RSC Adv.

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Synthesis and physical gelation induced by self-assembly of well-defined poly(arylene ether sulfone)s with various numbers of arms

Abstract: Synthesis of poly(arylene ether sulfone)s with various numbers of arms by chain-growth polycondensation and physical gelation induced by self-assembly.

Cited by 17 publications

References 47 publications

Environmentally-Friendly Synthesis of Carbonate-Type Macrodiols and Preparation of Transparent Self-Healable Thermoplastic Polyurethanes

Environmentally-Friendly Synthesis of Carbonate-Type Macrodiols and Preparation of Transparent Self-Healable Thermoplastic Polyurethanes

Grafting of trifluoromethylated poly(phenylene oxide)s on a single‐walled carbon nanotube via surface‐initiated chain‐growth condensation polymerization

Synthesis and self-assembly of partially sulfonated poly(arylene ether sulfone)s and their role in the formation of Cu₂S nanowires

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Synthesis and physical gelation induced by self-assembly of well-defined poly(arylene ether sulfone)s with various numbers of arms

Abstract: Synthesis of poly(arylene ether sulfone)s with various numbers of arms by chain-growth polycondensation and physical gelation induced by self-assembly.

Cited by 17 publications

References 47 publications

Environmentally-Friendly Synthesis of Carbonate-Type Macrodiols and Preparation of Transparent Self-Healable Thermoplastic Polyurethanes

Environmentally-Friendly Synthesis of Carbonate-Type Macrodiols and Preparation of Transparent Self-Healable Thermoplastic Polyurethanes

Grafting of trifluoromethylated poly(phenylene oxide)s on a single‐walled carbon nanotube via surface‐initiated chain‐growth condensation polymerization

Synthesis and self-assembly of partially sulfonated poly(arylene ether sulfone)s and their role in the formation of Cu2S nanowires

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Synthesis and self-assembly of partially sulfonated poly(arylene ether sulfone)s and their role in the formation of Cu₂S nanowires