差示扫描量热法
混溶性
材料科学
流变仪
扩展器
热稳定性
结晶
环氧树脂
傅里叶变换红外光谱
聚合物混合物
扫描电子显微镜
化学工程
热重分析
聚酰胺
热重分析
聚合物
高分子化学
复合材料
聚氨酯
物理
工程类
共聚物
热力学
作者
Anna Raffaela de Matos Costa,Mariana Alves Henrique,Carlos Bruno Barreto Luna,Lucas Araújo Carvalho,Yêda de Almeida
出处
期刊:Sustainability
[MDPI AG]
日期:2022-12-12
卷期号:14 (24): 16658-16658
被引量:5
摘要
In this study, a commercial chain extender (Polyad PR 002) in concentrations of 0.5, 1.0, and 1.5% w/w was used as a compatibilizer in post-consumed PET/PA6 blends (25/75, 50/50 e 75/25) processed in a laboratory mixer. The degradation rate, phase miscibility, chemical interaction, crystallization, and melting behavior, as well as the thermal stability of the mixtures, were analyzed by torque rheometry, scanning electron microscopy (SEM), FTIR spectroscopy, differential scanning calorimetry (DSC), and thermogravimetry (TGA), respectively. The results showed that the addition of 1% chain extender was sufficient to increase the melt viscosity of the PET-rich mixtures and 1.5% for the PA6-rich samples. Clearly, adding Polyad PR 002 to PET/PA6 blends improves polymer compatibility; for the 25%PET/75%PA6 blend with 1.5% PR 002, complete miscibility was observed, indicating a new compatible blend formation, revealing a chemical reaction between the systems, and proving the synergism between them. This chain extender did not affect the thermal stability of the blends, and the low contents employed reduced the crystallization rate of the blends investigated.
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