SYNTHESIS OF POLYESTERAMIDES FROM N，N′BIS(2HYDROXYETHYL)\ EREPHTHALAMIDE AND CHAIN EXTENSION REACTION

HUANG Chaoqun; XU Shaoyi; ZHAO Jingbo; JIANG Shengling; YANG Wantai

doi:10.3724/SP.J.1105.2010.00237

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SYNTHESIS OF POLYESTERAMIDES FROM N，N′BIS(2HYDROXYETHYL)\ EREPHTHALAMIDE AND CHAIN EXTENSION REACTION

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF POLYESTERAMIDES FROM N，N′BIS(2HYDROXYETHYL)\ EREPHTHALAMIDE AND CHAIN EXTENSION REACTION
- Acta Polymerica Sinica Issue 2, Pages: 237-244(2010)
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- DOI：10.3724/SP.J.1105.2010.00237
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- Published：20 February 2010，
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HUANG Chaoqun, XU Shaoyi, ZHAO Jingbo, JIANG Shengling, YANG Wantai. SYNTHESIS OF POLYESTERAMIDES FROM N，N′BIS(2HYDROXYETHYL)\ EREPHTHALAMIDE AND CHAIN EXTENSION REACTION. [J]. Acta Polymerica Sinica (2):237-244(2010)
DOI：

HUANG Chaoqun, XU Shaoyi, ZHAO Jingbo, JIANG Shengling, YANG Wantai. SYNTHESIS OF POLYESTERAMIDES FROM N，N′BIS(2HYDROXYETHYL)\ EREPHTHALAMIDE AND CHAIN EXTENSION REACTION. [J]. Acta Polymerica Sinica (2):237-244(2010) DOI： 10.3724/SP.J.1105.2010.00237.

摘要

以N

N′-二(2-羟乙基)对苯二甲酰胺与己二酸及丁二醇缩聚，合成了同时带有端羧基与端羟基的聚酯酰胺预聚体，研究了不同扩链剂的扩链反应，获得了特性黏度达1.05 dL/g的聚酯酰胺.对预聚体及扩链后聚合物进行了红外与核磁表征，研究了聚合物的结构，并对聚合物进行了DSC与TG分析.

Abstract

Polyesteramide (PEA(x/y)) prepolymers with intrinsic viscosity from 0.24 dL/g to 0.52 dL/g were synthesized through melt condensation polymerization from adipic acid

butanediol and N

N′-bis(2-hydroxyethyl)terephthalamide (HETA) at different butanediol (x) to HETA (y) molar ratios.Chain extension reaction was performed with 2

2′-(1

4-phenylene)-bis(2-oxazoline) (PBOX) or adipoyl biscaprolactamate (ABC) alone

or with combined PBOX +ABC chain extenders.High molecular weight PEA with intrinsic viscosity of 1.05 and 0.73 dL/g was obtained when PEA(90/10) and PEA(80/20) prepolymers were chain extended.The PEA prepolymers and the chain extended PEA were characterized by FTIR and 1H-NMR spectroscopy

differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA).1H-NMR spectra revealed that during the preparation of PEA prepolymers

esteramide exchange side reaction took place.DSC studies indicated that after chain extension

the Tg of PEA(80/20) increased

and its ΔHm as well as Tm decreased.PEA(0/100) is a non-crystallizable polyesteramide

and its Tg is 65℃.TGA studies showed that as the content of HETA used in the synthesis of PEA(x/y) prepolymers increased

the thermal stability of the prepolymers decreased

because the introduced terephthalic diesterdiamide showed less stability

关键词

聚酯酰胺扩链反应缩聚NN′-二(2-羟乙基)对苯二甲酰胺己二酸丁二醇

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