Typical semicrystalline aromatic polyesters are synthesized via the condensation polymerization of aromatic diacids with excess diols in vacuum. We demonstrate here a green cascade polycondensation-coupling ring-opening polymerization (PROP) method for the facile incorporation of diols into polyesters in N₂, utilizing cyclic oligo(butylene terephthlate)s as monomer and bio-based 1,10-decanediol as initiator. Poly(butylene-co-decylene terephthalate) (PBDT) copolyesters are synthesized with high atom economy (87–99%), and their structures are characterized and confirmed by the ¹H quantitative NMR, two dimensional ¹H–¹H gCOSY and DOSY NMR spectra. Property investigations reveal that with the increment of decanediol content, the glass transition temperature, melting temperature, storage modulus and Young's modulus for PBDT copolyesters decrease, while the toughness increases, respectively. Our results provide a high atom economy PROP method for the synthesis of sustainable PBDT copolyesters, which have lower processing temperatures and improved ductility than poly(butylene terephthalate) (PBT) homopolymers, and could draw attentions for further investigations on the green synthesis of other copolyesters.

典型的半结晶芳族聚酯是通过芳族二酸与过量二醇在真空下的缩聚反应合成的。我们在这里展示了一种绿色的级联缩聚偶联开环聚合（PROP）方法，该方法可方便地将二醇引入到N _2中的聚酯中，利用环状低聚（对苯二甲酸丁二醇酯）作为单体，并使用生物基1,10-癸二醇作为引发剂。聚（丁烯-共-decylene对苯二甲酸乙二酯）（PBDT）共聚酯具有高的原子经济性（87-99％）合成，并且由它们的结构的特征在于，确认¹ ħ定量NMR，二维¹ H- ¹H gCOSY和DOSY NMR谱。性能研究表明，随着癸二醇含量的增加，PBDT共聚酯的玻璃化转变温度，熔融温度，储能模量和杨氏模量分别降低，而韧性则提高。我们的结果为合成可持续的PBDT共聚酯提供了一种高原子经济的PROP方法，该方法比聚对苯二甲酸丁二酯（PBT）均聚物具有更低的加工温度和更高的延展性，并可能引起人们对其他共聚酯绿色合成的进一步研究的关注。