高反式1,4-环己烷二甲醇和2,6-萘二甲酸改性的聚（环己烷1,4-二亚甲基对苯二甲酸酯）的结构与性质关系,Journal of Applied Polymer Science

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高反式1,4-环己烷二甲醇和2,6-萘二甲酸改性的聚（环己烷1,4-二亚甲基对苯二甲酸酯）的结构与性质关系
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-01-11 , DOI: 10.1002/app.48950
Fiaz Hussain ₁ , Sangwon Park ₂ , Jaemin Jeong ₂ , Soo‐Jung Kang ₂ , Jinhwan Kim ₂

Affiliation

使用不同含量的反式或顺式异构体成功地熔融聚合了一系列新型的聚（1,4-环己烷二亚甲基对苯二甲酸乙二醇酯-co-1,4-环己二甲基亚甲基2,6-萘二甲酸酯）（PCTN）共聚酯。在评估之前，使用质子核磁共振确定性能特性，其实际化学组成，化学结构和分子量（¹H-NMR），傅立叶变换红外光谱（FTIR）和特性粘度（IV）测量。使用差示扫描量热法（DSC）对获得的共聚酯进行热研究。通过热重分析（TGA）分析热降解行为。使用热压技术开发了随机取向的薄膜样品，并对其热，阻隔，尺寸稳定性和光学性能进行了分析，并与常规聚对苯二甲酸乙二醇酯（PET）和聚萘二甲酸乙二醇酯（PEN）进行了比较。结果表明，玻璃化转变温度（T _g），熔融温度（T _m）和结晶度（X _c）通过增加反式1,4-环己烷二甲醇（反式CHDM）异构体，合成的共聚酯）呈线性趋势增加。还发现合成的膜比常规的PET和PEN膜具有更好的热，阻挡，光学和尺寸稳定性。结果清楚地表明，高反式CHDM异构体可显着改善人造膜的性能。©2020 Wiley Periodicals，Inc. J.Appl。Polym。科学 2020，137，48950。

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Structure–property relationship of poly(cyclohexane 1,4‐dimethylene terephthalate) modified with high trans‐1,4‐cyclohexanedimethanol and 2,6‐naphthalene dicarboxylicacid

A series of novel poly(1,4‐cyclohexanedimthylene terephthalate‐co‐1,4‐cyclohxylenedimethylene 2,6‐naphthalenedicarboxylate) (PCTN) copolyesters were successfully melt polymerized using different content of trans‐ or cis‐isomers. Before evaluations, the performance properties, their actual chemical composition, chemical structure, and molecular weight were determined using proton nuclear magnetic resonance (¹H‐NMR), Fourier transform infrared spectroscopy (FTIR), and intrinsic viscosity (IV) measurements. Thermal studies of obtained copolyesters were carried out using differential scanning calorimetry (DSC). Thermal degradation behaviors were analyzed by thermogravimetric analysis (TGA). Randomly oriented film specimens were developed using a hot‐press and their thermal, barrier, dimensional stability, and optical properties were analyzed and compared with conventional poly(ethylene terephthalate) (PET) and poly(ethylene naphthalate) (PEN). The results revealed that glass transition temperature (T_g), melting temperature (T_m), and crystallinity (X_c) of the synthesized copolyesters are increased in a linear trend by increasing the trans‐1,4‐cyclohexanedimethanol (trans‐CHDM) isomers. It was also found that synthesized films had better thermal, barrier, optical, and dimensional stability properties than conventional PET and PEN films. Results clearly indicated that high trans‐CHDM isomers significantly improve the performance properties of the fabricated films. © 2020 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48950.

更新日期：2020-01-11

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