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首页> 外文期刊>Journal of Applied Polymer Science >Effects of plasticizer on structures, non-isothermal crystallization, and rheological properties of polyarylates
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Effects of plasticizer on structures, non-isothermal crystallization, and rheological properties of polyarylates

机译：增塑剂对聚亚氨酸盐的结构，非等温结晶和流变性能的影响

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摘要

We herein report the effects of plasticizer content (1-5 wt %) on the structure, non-isothermal crystallization kinetics, thermal stability, and rheological property of a new type of multicomponent polyarylate (PAR). Fourier transform infrared spectra reveal the presence of a specific interaction between plasticizer and PAR chains, indicating the good dispersion of the plasticizer at the molecular level. The plasticizer influences on the non-isothermal crystallization behavior of the PAR in two different ways: a mobility enhancer of PAR chains and an impurity to the crystallization of PAR. The melt-crystallization temperature (T-mc) and enthalpy (H-mc) of the plasticized PARs at cooling runs are higher than those of the neat PAR, which is owing to the enhanced mobility of PAR chains by the plasticizer. On the other hand, the non-isothermal crystallization rates at different cooling rates of 5-40 degrees C/min are slower for the PARs with higher plasticizer contents, which is due to the impurity effect of the plasticizer on the melt-crystallization of PARs. Although the PARs with 1-5 wt % plasticizer have lowered thermal decomposition temperatures, compared to the neat PAR, they are thermally stable up to approximate to 400 degrees C. The complex melt viscosity of PAR with only 1 wt % plasticizer is far lower than that of the neat PAR. Overall, it is found that only 1 wt % plasticizer is quite effective to facilitate the melt-processibility and to increase the crystallinity of PAR. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45704.
机译：我们在此报告了增塑剂含量（1-5wt％）对新型多组分聚芳基酯（Par）的结构，非等温结晶动力学，热稳定性和流变性的影响。傅里叶变换红外光谱揭示了增塑剂和PAR链之间的特异性相互作用的存在，表明增塑剂在分子水平下的良好分散。增塑剂以两种不同方式的非等温结晶行为对非等温结晶行为的影响：PAR链和杂质的流动性增强剂与杂质。冷却延伸的塑化分析的熔融结晶温度（T-MC）和焓（H-MC）高于整齐的PAR，这是由于增塑剂增强了PAR链的增强率。另一方面，具有较高增塑剂含量的不同冷却速率的非等温结晶率为5-40℃/ min的较慢较慢，这是由于增塑剂对PARS的熔体结晶的杂质作用。虽然具有1-5wt％增塑剂的含量降低了热分解温度，但与整齐的标准相比，它们是热稳定的，以近似为400℃。只有1wt％增塑剂的络合物的复合熔体粘度远低于整洁的par。总体而言，发现只有1wt％的增塑剂非常有效地促进熔体加工性和增加标准杆的结晶度。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,45704。

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