Studying the photodecomposition rate constant and morphology properties of modified poly(vinyl chloride) with novel Schiff's bases

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED Journal of Vinyl & Additive Technology Pub Date : 2023-06-25 DOI:10.1002/vnl.22027

Mohammed Kadhom, Alaa Mohammed, Hassan Ghani, Amer Adnan Hasan, Omar G. Mousa, Roaa T. Abdulla, Wedad H. Al-Dahhan, Mohammed H. Al-Mashhadani, Rahimi M. Yusop, Emad Yousif

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Abstract

The photodegradation of a poly(vinyl chloride) (PVC) film filled with Schiff bases in its structure was investigated and studied by comparing it with a blank PVC film. A PVC film containing novel Schiff's bases was synthesized and used as a photostabilizer for PVC. PVC was exposed to ultraviolet light and underwent harmful changes, where the photostabilization effect differed before and after filling aromatic Schiff bases within the structure. After 300 h of UV irradiation, the photodecomposition rate constants were calculated to identify the impact of Schiff bases on PVC films. In order to evaluate the impact of adding Schiff bases as photo-stabilizers, the evolution of different functional groups during irradiation was monitored using FTIR spectra. Also, scanning electron microscopy (SEM) and atomic force microscopy (AFM) were exploited to examine the surface morphology of produced polymers. These investigations showed that filling novel Schiff bases inside the polymers performed much better photostabilization than plain PVC. Hence, the photodecomposition rate constant, on the other hand, was calculated alongside the irradiation time.

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新型席夫碱改性聚氯乙烯的光分解速率常数及形态性质研究

通过与空白聚氯乙烯薄膜的比较，研究了结构中填充席夫碱的聚氯乙烯薄膜的光降解性能。合成了一种含有新型席夫碱的聚氯乙烯薄膜，并将其用作聚氯乙烯的光稳定剂。PVC暴露在紫外线下并发生有害变化，在结构中填充芳香Schiff碱前后，光稳定效果不同。300之后计算了紫外光照射h的光分解速率常数，以确定席夫碱对PVC薄膜的影响。为了评估添加席夫碱作为光稳定剂的影响，使用FTIR光谱监测了辐照过程中不同官能团的演变。此外，还利用扫描电子显微镜（SEM）和原子力显微镜（AFM）来检测所制备的聚合物的表面形态。这些研究表明，在聚合物中填充新型席夫碱比普通PVC具有更好的光稳定性。因此，另一方面，光分解速率常数是与照射时间一起计算的。

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来源期刊

Journal of Vinyl & Additive Technology 工程技术-材料科学：纺织

CiteScore

5.40

自引率

14.80%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Vinyl and Additive Technology is a peer-reviewed technical publication for new work in the fields of polymer modifiers and additives, vinyl polymers and selected review papers. Over half of all papers in JVAT are based on technology of additives and modifiers for all classes of polymers: thermoset polymers and both condensation and addition thermoplastics. Papers on vinyl technology include PVC additives.