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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of poly(ether ester) thermoplastic elastomers containing the 2,6-naphthalenedicarboxyl group
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Preparation and characterization of poly(ether ester) thermoplastic elastomers containing the 2,6-naphthalenedicarboxyl group

机译：含2,6-萘二羧基的聚醚酯热塑性弹性体的制备与表征

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摘要

Poly(ether ester) elastomers (PEEs) were synthesized in which dimethyl terephthalate (DMT) was the primary diester compound in the hard segment (H/S) and dimethyl 2,6-naphthalene dicarboxylate (NDC), which has a more rigid aromatic chemical structure than DMT, was the secondary diester in the H/S. The block PEEs with poly(tetramethylene terephthalate) (PTMT) and/or poly(tetramethylene 2,6-naphthalate) (PTMN) as the H/S and poly(tetramethylene ether glycol terephthalate) (PTMEGT) as the soft segment (S/S) were synthesized through transesterification and polycondensation of DMT, NDC, 1,4-butanediol (BD), and poly(tetramethylene ether) glycol (PTMEG) of molecular weight 1000. The melting temperature and heat of fusion of the PEEs decreased with increasing NDC content up to an NDC content of 44.4% in the H/S, but increased on further increase of the NDC content. In addition, the higher the fraction of NDC in the H/S, the higher the glass transition temperature of the copolymer. X-ray diffraction analysis revealed that the crystallinity of the sample decreases as the NDC content in the H/S is increased relative to that of DMT. Increasing the PTMN content in the H/S reduced the effect of UV photodegradation on the elongation at break. The results show that the introduction of the NDC component into the H/S as a secondary diester compound improves the UV resistance of the resulting PEE. (C) 2003 Wiley Periodicals, Inc. [References: 20]
机译：合成了聚醚酯弹性体（PEE），其中对苯二甲酸二甲酯（DMT）是硬链段（H / S）中的主要二酯化合物，而2,6-萘二甲酸二甲酯（NDC）具有更硬的芳族化合物化学结构比DMT高，是H / S中的次要二酯。以聚对苯二甲酸丁二醇酯（PTMT）和/或聚2,6-萘二甲酸丁二醇酯（PTMN）作为H / S和聚对苯二甲酸丁二醇酯（PTMEGT）作为软链段（S / S）是通过DMT，NDC，1,4-丁二醇（BD）和分子量为1000的聚四亚甲基醚）二醇（PTMEG）的酯交换和缩聚反应合成的。PEE的熔融温度和熔融热随温度的升高而降低。 NDC含量高达H / S中NDC含量的44.4％，但随着NDC含量的进一步增加而增加。另外，NDC在H / S中的分数越高，共聚物的玻璃化转变温度越高。 X射线衍射分析表明，样品的结晶度随H / S中NDC含量的增加而相对于DMT降低。 H / S中PTMN含量的增加降低了UV光降解对断裂伸长率的影响。结果表明，将NDC组分作为辅助二酯化合物引入H / S可改善所得PEE的抗紫外线性。 （C）2003 Wiley Periodicals，Inc. [参考：20]

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