【摘要】 以双酚酸为单体,采用熔融缩聚得到了超支化聚酯,并用棕榈酰氯对所得到的超支化聚酯进行烷基化改性。用红外和1H-NMR对上述产物进行了表征。TG分析表明,烷基化改性的超支化聚酯具有较好的热稳定性,可以满足聚丙烯纺丝的温度要求。将烷基化改性的超支化聚酯和聚丙烯共混纺丝,在添加量为3.2%时,得到了可纺性良好的聚丙烯纤维。在常压沸染的条件下,超支化聚酯改性的聚丙烯纤维能很大幅度的改善分散染料的上染率。更多还原

【Abstract】 Hyperbranched polyesters based on 4,4-(4′-hydroxyphenyl) pentanoic acid were synthesized and characterized by FT-IR and 1H-NMR.Then the hyperbranched polyesters were functionalized with palmitoyl chloride.The result of TG showed that the modified polyesters had good temperature-stability,than the alkyl chain modified polyesters were blended with PP and spinned.The dyeability of the fibres with hyperbranched polyesters were greatly improved after dyeing at atmosphere and boiling temperature compared with the pure PP fiber.更多还原