The synthesis and characterization of two series of biobased novel poly(1,4-cyclohexylenedimethylene terephthalate-co-1,4-cyclohexylene dimethylene 2,6-naphthalenedicarboxylate) copolyesters containing isosorbide (ISB) content (PCITN) ranging from 0 to 11 mol% relative to the total diol amount was carried out in this study. The Novel PCITN was containing 2,6-naphthalenedicarboxylic acid (NDA) content ranging from 0 to 100 mol% relative to the total diacid amount. The synthesized PCITN were thoroughly characterized for their actual chemical composition, molecular weight, thermal properties, thermal stability, dimensional stability, transmittance (%), and birefringence. All the copolyesters showed the characteristics of random copolyesters and their composition and thermal properties could be controlled by the molar feed ratio of diol and diacid moieties. Results indicate that ISB significantly improves the glass transition temperature (T_g) of resultant copolyesters. It was also found that synthesized copolyesters have a high T_g and wide processing window compared to conventional homopolyesters. Exceptional performance properties: such as high T_g, T_m, high thermal stability, dimensional stability, good moisture barrier, good transmittance, and low birefringence of fabricated PCI₆TN₇₀ film, make it suitable for versatile industrial applications especially for biomedical, packaging, and optical applications.

含异山梨醇 (ISB) 含量 (PCITN) 范围为 0 至 11  mol%的两个系列生物基新型聚（1,4-亚环己基二亚甲基对苯二甲酸酯-co-1,4-亚环己基二亚甲基 2,6-萘二甲酸酯）共聚酯的合成与表征相对于总二醇量在本研究中进行。新型 PCITN 含有 2,6-萘二甲酸 (NDA)，含量从 0 到 100 mol% 相对于二酸总量。合成的 PCITN 对它们的实际化学成分、分子量、热性能、热稳定性、尺寸稳定性、透射率 (%) 和双折射进行了彻底的表征。所有共聚酯都表现出无规共聚酯的特性，它们的组成和热性能可以通过二醇和二酸部分的摩尔进料比来控制。结果表明ISB显着提高了所得共聚酯的玻璃化转变温度(T _g )。还发现与常规均聚酯相比，合成的共聚酯具有高T _g和宽加工窗口。卓越的性能特性：如高 T _g、T _m、高热稳定性、尺寸稳定性、良好的防潮性、良好的透射率和制造的 PCI ₆ TN ₇₀薄膜的低双折射，使其适用于多种工业应用，尤其是生物医学、包装和光学应用。