Maliszewska Irena, Gazińska Małgorzata, Łojkowski Maciej, Choińska Emilia, Nowinski Daria, Czapka Tomasz, Święszkowski Wojciech
Department of Organic and Medicinal Chemistry, Faculty of Chemistry, Wrocław University of Science and Technology, 50-370 Wrocław, Poland.
Department of Polymer Engineering and Technology, Faculty of Chemistry, Wrocław University of Science and Technology, 50-370 Wrocław, Poland.
Polymers (Basel). 2023 Oct 31;15(21):4289. doi: 10.3390/polym15214289.
The aim of the work was to investigate the effect of non-thermal plasma treatment of an ultra-thin polyethylene terephthalate (PET) film on changes in its physicochemical properties and biodegradability. Plasma treatment using a dielectric barrier discharge plasma reactor was carried out in air at room temperature and atmospheric pressure twice for 5 and 15 min, respectively. It has been shown that pre-treatment of the PET surface with non-thermal atmospheric plasma leads to changes in the physicochemical properties of this polymer. After plasma modification, the films showed a more developed surface compared to the control samples, which may be related to the surface etching and oxidation processes. After a 5-min plasma exposure, PET films were characterized by the highest wettability, i.e., the contact angle decreased by more than twice compared to the untreated samples. The differential scanning calorimetry analysis revealed the influence of plasma pretreatment on crystallinity content and the melt crystallization behavior of PET after soil degradation. The main novelty of the work is the fact that the combined action of two factors (i.e., physical and biological) led to a reduction in the content of the crystalline phase in the tested polymeric material.
这项工作的目的是研究非热等离子体处理超薄聚对苯二甲酸乙二酯（PET）薄膜对其物理化学性质和生物降解性变化的影响。使用介质阻挡放电等离子体反应器在室温及大气压下的空气中分别进行两次等离子体处理，每次处理时间分别为5分钟和15分钟。结果表明，用非热大气等离子体对PET表面进行预处理会导致该聚合物物理化学性质发生变化。等离子体改性后，与对照样品相比，薄膜表面更加粗糙，这可能与表面蚀刻和氧化过程有关。经过5分钟的等离子体暴露后，PET薄膜具有最高的润湿性，即接触角与未处理样品相比降低了两倍多。差示扫描量热法分析揭示了等离子体预处理对土壤降解后PET结晶度含量和熔体结晶行为的影响。这项工作的主要新颖之处在于，两个因素（即物理和生物因素）的共同作用导致了测试聚合物材料中结晶相含量的降低。
Zotero 插件
