富马酸季戊四醇酯基镧稀土化合物的制备及其在PVC中热稳定性能和抗菌性能的研究

中国塑料 ›› 2025, Vol. 39 ›› Issue (1): 6-11.

富马酸季戊四醇酯基镧稀土化合物的制备及其在PVC中热稳定性能和抗菌性能的研究

陈明光¹,李梦迪²,郁辰²,曹鸿璋¹,柳召刚³,罗果萍⁴

1. 包头稀土研究院
2. 山东理工大学
3. 内蒙古科技大学稀土产业学院
4. 内蒙古科技大学

收稿日期:2024-04-19 修回日期:2024-05-12 出版日期:2025-01-26 发布日期:2025-01-26

Preparation of pentaerythritol fumarate-based lanthanum rare earth compounds and their thermal stability and antibacterial properties in PVC

Received:2024-04-19 Revised:2024-05-12 Online:2025-01-26 Published:2025-01-26
Contact: Luo guoping E-mail:luoguoping3@126.com

摘要/Abstract

摘要： 以富马酸、季戊四醇和醋酸镧为原料，合成了富马酸季戊四醇镧（FGPE-La）稀土化合物，通过红外分析、XPS、元素分析及稀土含量分析对其结构和组成进行了表征，同时研究了FGPE-La在PVC中的热稳定性能和抗菌性能。研究结果表明：FGPE-La是兼具热稳定性能和抗菌性能的多功能PVC助剂，当FGPE-La：ZnSt2=3：1复配使用时，具有较好的初期白度和长期热稳定性能，且当4份FGPE-La单独使用时，塑化效率明显提高，热稳定时间达到了68分钟，够显著提高PVC的长期稳定性。这主要由于FGPE-La可以吸收PVC降解产生的HCl，同时可以与ZnCl2可以有效络合，防止“锌烧”现象的产生。当添加6%FGPE-La时，抑菌率达到了99.1%，溶血率也仅为4.6%，具有较好的生物相容性。SEM结果分析，FGPE-La会改变膜的脂质部分，破坏细胞结构，从而起到抗菌效果。

Abstract: Using fumaric acid, pentaerythritol acid and lanthanum acetate as raw materials, rare earth compounds of pentaerythritol fumarate lanthanum (FGPE-LA) were synthesized, the structure and composition of FGPE-La were characterized by IR, XPS, elemental analysis and rare earth content analysis. The thermal stability and antibacterial properties of FGPE-La in PVC were studied. The results show that FGPE-La is a multi-functional additive for PVC with both thermal stability and antibacterial properties. When FGPE-La: znst2 = 3:1 is used together, it has good initial whiteness and long-term thermal stability, when 4 parts of FGPE-La were used alone, the plasticizing efficiency was obviously improved, and the heat stabilization time was 68 minutes, which could significantly improve the long-term stability of PVC. This is mainly because FGPE-La can absorb HCl produced by the degradation of PVC, and can effectively complexate with ZNCL2 to prevent the“Zinc burn” phenomenon. When 6% fgpe-la was added, the bacteriostasis rate was 99.1% , and the hemolysis rate was only 4.6% , which showed that fgpe-la had good Biocompatibility. SEM analysis showed that FGPE-La could change the lipid part of the membrane and destroy the cell structure, thus achieving the antibacterial effect.

陈明光李梦迪郁辰曹鸿璋柳召刚罗果萍. 富马酸季戊四醇酯基镧稀土化合物的制备及其在PVC中热稳定性能和抗菌性能的研究[J]. 中国塑料, 2025, 39(1): 6-11.

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