Synthesis, morphology and properties of segmented poly(ether ester amide)s comprising uniform glycine or β-alanine extended bisoxalamide hard segments

Sijbrandi, Niels J.; Kimenai, Ad J.; Mes, E.P.C.; Broos, R.; Bar, G.; Rosenthal, Martin; Odarchenko, Yaroslav; Ivanov, Dimitri A.; Feijén, Jan; Dijkstra, Pieter J.

doi:10.1016/j.polymer.2012.07.015

Cited by 27 publications

(31 citation statements)

References 44 publications

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“…These facts confirm the formation of PA62/PG2 copolymers and reveal that the incorporation of PG2 into PA62 weakens the intensity of the hydrogen bonds and the ordered structures. These shifts with the inclusion of PG soft segments are in agreement well with previous literature .…”

Section: Resultssupporting

confidence: 93%

Preparation and properties of poly(hexamethylene oxamide) copolymers containing ether moiety

Dong

Chen

Mutua

et al. 2017

Polymer Engineering & Sci

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To modify the properties of poly(hexamethylene oxamide) (PA62), amine-terminated polyoxypropylene glycols (PGs) were introduced into the polyoxamide main chain as soft segments. A series of PA62/PG2 copolymers were synthesized successfully by a two-step method. Fourier transform infrared spectroscopy, solution proton nuclear magnetic resonance spectroscopy ( 1 H-NMR), differential scanning calorimetry, thermogravimetric analysis, and wide-angle X-ray diffraction were used to analyze the structures and to investigate the properties of these copolymers. The saturated water absorption was also evaluated by gravimetric analysis for PA62/PG2 copolymers. The results revealed the incorporation of PG2 effectively modified the properties of PA62 and the copolymers with PG2 content of 10-20 mol% possessed high melting point (2938C-3148C), good thermal stability and low saturated water absorption. POLYM. ENG. SCI., 00:000-000, 2017.T 5 : the decomposition temperature corresponding to 5% mass loss. b T 50 : the decomposition temperature corresponding to 50% mass loss. c T max : the decomposition temperature corresponding to the maximum mass loss rate.

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Section: Resultssupporting

confidence: 93%

Preparation and properties of poly(hexamethylene oxamide) copolymers containing ether moiety

Dong

Chen

Mutua

et al. 2017

Polymer Engineering & Sci

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“…Copolymers composed of 2000 and 5000 g mol −1 PDMS SS revealed broad endothermic transitions from 64 to 179 °C corresponding to the HS T m (Table ). The endothermic peaks observed with DSC suggested the presence of crystalline HS domains, and previous reports verified the semicrystalline nature of bisoxamide HS structures in segmented copolymers . PDMS12K‐Ox copolymers failed to exhibit any HS melting transitions due to the very low HS wt% composition, and the only observed thermal transitions were T g , T c , and T m of PDMS.…”

Section: Resultssupporting

confidence: 65%

Effects of Copolymer Structure on the Mechanical Properties of Poly(dimethyl siloxane) Poly(oxamide) Segmented Copolymers

Buckwalter

Inglefield

Enokida

et al. 2013

Macro Chemistry & Physics

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An investigation of the structure–property relationships of poly(dimethyl siloxane) (PDMS) polyoxamide segmented copolymers reveals the impact of oxamide spacing and PDMS molecular weight on physical properties. Varying the length of the methylene spacing between the oxamide hydrogen bonding groups in the hard segment (HS), as well as the PDMS soft segment molecular weight, provides insight into the influence on thermal and mechanical properties. Bulk polycondensation of ethyl‐oxalate‐terminated PMDS oligomers with diamines yields optically clear, thermoplastic elastomers with excellent mechanical properties. The structure–property investigation reveals optimum mechanical properties of PDMS polyoxamide segmented copolymers occur with the smallest spacing between oxamide groups in the HS.

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“…For random copolymers, the peaks of the melting and crystallization peaks of the copolymer may become wider and shorter and even visible double peaks may appear than the homopolymer, owing to the existence of great deal of different irregular sequence structures. Similar thermal behaviors have been reported in other polymers …”

Section: Resultssupporting

confidence: 89%

Synthesis and characterization of poly (1,6‐hexamethylene oxamide‐co‐m‐xylene oxamide) copolymers

Yang

Mutua

Gao

et al. 2018

Polymers for Advanced Techs

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To modify the properties of poly (hexamethylene oxamide) (PA62), m-xylylene diamine (MXD) was introduced into the polyamide main chain. A series of high molecular weight PA62/MXD2 were synthesized via a two-step method. The chemical structure of polymer was analyzed by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy, and the results confirmed the formation of PA62/MXD2. DSC test showed that the T m of the copolymers were decreased as the molar contents of MXD in the range of 10 to 50 mol %. TGA analysis revealed that the thermal stability of the copolymers compared well with commercial PA6. Wide-angle X-ray diffraction studies suggested the copolymers with MXD content of 0 to 10 mol % possessed high crystallinity. The water uptake measurements were monitored, and the saturated water absorptions were found to be lower than 2.5 wt %. These properties gave them a competitive edge for application where precise dimensional stability and high thermal resistanceproperties are required.

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Synthesis, morphology and properties of segmented poly(ether ester amide)s comprising uniform glycine or β-alanine extended bisoxalamide hard segments

Cited by 27 publications

References 44 publications

Preparation and properties of poly(hexamethylene oxamide) copolymers containing ether moiety

Preparation and properties of poly(hexamethylene oxamide) copolymers containing ether moiety

Effects of Copolymer Structure on the Mechanical Properties of Poly(dimethyl siloxane) Poly(oxamide) Segmented Copolymers

Synthesis and characterization of poly (1,6‐hexamethylene oxamide‐co‐m‐xylene oxamide) copolymers

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