Preparation and characterization of poly(ether ester) thermoplastic elastomers containing the 2,6-naphthalenedicarboxyl group
Preparation and characterization of poly(ether ester) thermoplastic elastomers containing the 2,6-naphthalenedicarboxyl group
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含2,6-萘二羧基聚醚酯热塑性弹性体的制备及表征
DOI：
10.1002/app.13000
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发表时间：
2003
影响因子：
3
通讯作者：
D. Baik
中科院分区：
文献类型：
--
作者：
T. H. Ahn;Y. Park;S. Kim;D. Baik
合成了以对苯二甲酸二甲酯（DMT）为硬段（H/S）中的伯双酯化合物，2，6-萘二甲酸二甲酯（NDC）为硬段（H/S）中的仲双酯化合物的聚醚酯弹性体（PEE）。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）为H/S，聚对苯二甲酸丁二醇酯（PTMEGT）为软段（S/S），以DMT、NDC、1，4-丁二醇（BD）和相对分子质量为1000的聚对苯二甲酸丁二醇酯（PTMEG）为原料，通过酯交换和缩聚反应合成了嵌段PEE。PEE的熔融温度和熔化热随着NDC含量的增加而降低，直到在H/S中的NDC含量为44.4%，但随着NDC含量的进一步增加而增加。此外，在H/S中NDC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，随着H/S中NDC含量相对于DMT的增加，样品的结晶度降低。增加H/S中PTMN含量降低了UV光降解对断裂伸长率的影响。结果表明，将NDC组分作为仲二酯化合物引入到H/S中改善了所得PEE的耐UV性。© 2003 Wiley Periodicals，Inc.应用聚合物科学杂志90：3473-3480，2003
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. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3473–3480, 2003