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具有高尺寸热稳定性的PET/生物基三元共聚酯共混物

PET/Bio-Based Terpolyester Blends with High Dimensional Thermal Stability.

作者信息

Park Sangyoon, Thanakkasaranee Sarinthip, Shin Hojun, Lee Youngsoo, Tak Guman, Seo Jongchul

机构信息

Department of Packaging, Yonsei University, 1 Yonseidae-gil, Wonju-si, Gangwon-do 26493, Korea.

Saehanplatech Inc., 851-11, Dulleung-ri-ro, Ochang-eup, Cheongwon-gu, Cheongju-si, Chungcheongbuk-do 28017, Korea.

出版信息

Polymers (Basel). 2021 Feb 27;13(5):728. doi: 10.3390/polym13050728.

DOI:10.3390/polym13050728
PMID:33673483
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7956836/
Abstract

To improve the dimensional thermal stability of polyethylene terephthalate (PET), a poly(ethylene glycol 1,4-cyclohexane dimethylene (CHDM) isosorbide (ISB) terephthalate) (PEICT) known as ECOZENT110 (EZT) was introduced into PET using a melt blending technique. The miscibility, morphology, and thermal properties of the PET/EZT samples were investigated. The introduction of amorphous EZT into semi-crystalline PET increased the glass transition temperature (T) but decreased the crystallinity, which could be related to the transesterification reaction. By adding EZT contents up to 20%, the PET/EZT samples showed a single T, which indicated the miscibility between PET and EZT. However, two T values were observed in the PET/EZT samples with higher EZT contents (30-70%), indicating partial miscibility. This may have been due to the slightly different rheological and thermodynamic parameters that were affected by a higher ratio of bulky (rigid ISB and ductile CHDM) groups in EZT. However, the heat distortion temperature of the PET/EZT samples remarkably increased, which indicated that the dimensional stability was truly enhanced. Although the crystallinity of the PET/EZT samples decreased with increasing EZT content, the tensile strength and Young's modulus decreased slightly. Based on these results, the as-prepared PET/EZT samples with high dimensional stability can be used as a high-temperature polymeric material in various applications.

摘要

为提高聚对苯二甲酸乙二酯（PET）的尺寸热稳定性，采用熔融共混技术将一种名为ECOZENT110（EZT）的聚（1,4 - 环己烷二甲醇（CHDM）异山梨醇（ISB）对苯二甲酸乙二酯）（PEICT）引入PET中。对PET/EZT样品的相容性、形态和热性能进行了研究。将无定形的EZT引入半结晶的PET中提高了玻璃化转变温度（T），但降低了结晶度，这可能与酯交换反应有关。添加高达20%的EZT含量时，PET/EZT样品显示出单一的T，这表明PET和EZT之间具有相容性。然而，在EZT含量较高（30 - 70%）的PET/EZT样品中观察到两个T值，表明部分相容。这可能是由于EZT中较大体积（刚性的ISB和韧性的CHDM）基团比例较高影响了流变学和热力学参数略有不同。然而，PET/EZT样品的热变形温度显著提高，这表明尺寸稳定性确实得到了增强。尽管PET/EZT样品的结晶度随着EZT含量的增加而降低，但拉伸强度和杨氏模量略有下降。基于这些结果，所制备的具有高尺寸稳定性的PET/EZT样品可作为高温聚合物材料用于各种应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/2e05e8f50ff2/polymers-13-00728-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/d5800c0ffb7b/polymers-13-00728-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/93fc82717215/polymers-13-00728-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/09414de3b5f9/polymers-13-00728-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/f6e1bae84d90/polymers-13-00728-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/0d2296720b39/polymers-13-00728-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/df06397d0445/polymers-13-00728-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/2e05e8f50ff2/polymers-13-00728-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/d5800c0ffb7b/polymers-13-00728-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/93fc82717215/polymers-13-00728-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/09414de3b5f9/polymers-13-00728-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/f6e1bae84d90/polymers-13-00728-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/0d2296720b39/polymers-13-00728-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/df06397d0445/polymers-13-00728-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2522/7956836/2e05e8f50ff2/polymers-13-00728-g007.jpg

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