Synthesis and characterization of biodegradable polyesteramides constructed mainly by alternating diesterdiamide units from N,N′-bis(2-hydroxyethyl)-adipamide and diacids

Sun, Hangyu; Yin, Tiao; Zhao, Ji; Zhang, Zhiyuan; Yang, Wantai

doi:10.1007/s10118-013-1233-8

Cited by 11 publications

(4 citation statements)

References 24 publications

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“…The peaks corresponding to ExtPEA(0, 4)‐3 occurred at 2θ of 21.16° and 22.24°, and those corresponding to ExtPEA(0, 8)‐2 occurred at 2θ of 21.28° and 22.11°. These ExtPEAs crystallized in the similar crystallites to those of the nylon‐66 and polyesteramides having similar structure . The peak intensity relates to the crystallinity of them.…”

Section: Resultsmentioning

confidence: 86%

“…The polyesteramide having 40 mol% amide showed tensile strength of 22.42 MPa. We also synthesized two types of alternating polyesteramides [ExtPEA (4, 4) and ExtPEA (4, 8)] from N , N '‐bis(2‐hydroxyethyl) ‐ adipamide and AA or SA through polycondensation and chain extension . Their T m detected in the first heating DSC scan at heating rate of 10°C/min was 83.8°C and 85.8°C, respectively, but could not be showed in the second heating DSC scan.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and characterization of aliphatic polyesteramides mainly composed of alternating diester diamide units from N,N′‐bis(2‐Hydroxyethyl)‐oxamide and diacids

Yin

Sun

Zhao

et al. 2013

Polymer Engineering & Sci

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This article provided a convenient method to synthesize aliphatic polyesteramides mainly composed of alternating diester diamide units by polycondensation and chain extension. Two kinds of polyesteramide prepolymers were prepared through melt polycondensation from N,N'-bis(2-hydroxyethyl)oxamide and adipic acid or sebacic acid. Chain extension of them was conducted with 2,2 0 -(1,4-phenylene)-bis(2-oxazoline) and adipoyl biscaprolactamate as combined chain extenders. The chain extended polyesteramides (ExtPEAs) were characterized by IR, 1 H NMR, differential scanning calorimetry, thermogravimetric analysis, wide-angle X-ray scattering, tensile test, and dynamic thermomechanical analysis. The results showed that the ExtPEA(0, m)s were mainly constituted with the diester oxamide alternating units. They had T m above 140.8 C and the initial decomposition temperature above 298.0 C. They crystallized in similar crystallites to Nylon-66 and were thermoplastic materials with tensile strength up to 31.47 MPa. POLYM. ENG. SCI.,

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of aliphatic polyesteramides mainly composed of alternating diester diamide units from N,N′‐bis(2‐Hydroxyethyl)‐oxamide and diacids

Yin

Sun

Zhao

et al. 2013

Polymer Engineering & Sci

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“…The amine value of D230 was 499.82 mg KOH/g, which was determined by titration according to the literature. 21 The molecular weight of D230 was 224.48 g/mol. Other materials, such as ethanol, dimethylsulfoxide (DMSO), N,Ndimethylformamide (DMF), were all gained as reagent grades and used directly.…”

Section: Methodsmentioning

confidence: 99%

“…O , O ′-Bis(2-aminopropyl) polypropylene glycol (D230) was bought from Beijing Hua Wei Rui Ke Co., China. The amine value of D230 was 499.82 mg KOH/g, which was determined by titration according to the literature . The molecular weight of D230 was 224.48 g/mol.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and Properties of Bio-Based Nonisocyanate Thermoplastic Polyoxamide-Ureas

Liang

Zhao

et al. 2019

Ind. Eng. Chem. Res.

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A green route is presented to synthesize bio-based nonisocyanate thermoplastic polyoxamide-ureas (POXAUs) containing flexible poly(propylene oxide) segments. A hexanedioxamide-diester (HDODE) was synthesized from the reaction of 1,6-hexanediamine with excessive diethyl oxalate. Four H2N– terminated polyoxamide prepolymers (PrePOXAs) were synthesized through melt polycondensation of HDODE with O,O′-bis(2-aminopropyl) poly(propylene glycol). Chain extension of PrePOXAs was conducted with bis(hydroxyethyl) hexanediurethane as a chain extender, and four chain-extended POXAs or POXAUs were prepared. The POXAUs were characterized by size exclusion chromatography, Fourier transform infrared, 1H NMR, wide-angle X-ray scattering, differential scanning calorimetry, thermogravimetric analysis, and tensile testing. POXAUs show Mn up to 29 900 g mol–1, melting temperature from 148 to 156 °C, initial decomposition over 242 °C, tensile strength up to 60 MPa, and elongation at break from 8 to 16%. Crystallized bio-based thermoplastic poly(oxamide urea)s with excellent thermal and mechanical properties were successfully synthesized through a nonisocyanate route.

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An Overview of Biopolymer/Clay Nanocomposites

Salam¹,

Dong²

2021

Bioepoxy/Clay Nanocomposites

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Synthesis and characterization of biodegradable polyesteramides constructed mainly by alternating diesterdiamide units from N,N′-bis(2-hydroxyethyl)-adipamide and diacids

Cited by 11 publications

References 24 publications

Synthesis and characterization of aliphatic polyesteramides mainly composed of alternating diester diamide units from N,N′‐bis(2‐Hydroxyethyl)‐oxamide and diacids

Synthesis and characterization of aliphatic polyesteramides mainly composed of alternating diester diamide units from N,N′‐bis(2‐Hydroxyethyl)‐oxamide and diacids

Synthesis and Properties of Bio-Based Nonisocyanate Thermoplastic Polyoxamide-Ureas

An Overview of Biopolymer/Clay Nanocomposites

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