Solid-phase synthesis of grafted carbon black for superior aging resistance in biodegradable poly(butylene adipate-co-butylene terephthalate) composite films

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-10-30 DOI:10.1002/vnl.22173

Ke Wang, Xiaoyan Sun, Fayong Li, Dong Xie

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引用次数: 0

Abstract

Biodegradable films mitigate plastic pollution but often lack UV-aging resistance, shortening their lifespan. While anti-aging additives can boost the films' durability, small molecule migration constrains the extension of their service life. This study introduces a straightforward solid-phase reaction for producing carbon black (CB) grafted with the UV absorber UV531, termed CB-UV531. This material was then blended with the biodegradable polymer PBAT and transformed into a film via blow molding, yielding a durable UV-resistant biodegradable film (PBAT/CB-UV531). This solid-phase grafting reaction does not require any solvents, thereby reducing solvent contamination and waste, and it is simple to operate, allowing for scalable production. Compared to the unmodified CB, the obtained CB-UV531 exhibits significantly improved thermal stability, which can effectively reduce the loss of UV531 during the subsequent high-temperature film-blowing process. Furthermore, the chemically bonded UV absorber on the surface of CB-UV531, coupled with its reduced particle size, promotes enhanced dispersibility and consistent stability within the PBAT/CB-UV531 film, markedly improving its long-term resistance to UV aging. This method is expected to enhance the anti-aging effects of various commercial light stabilizer additives and can be used to extend the lifespan of different biodegradable materials.

Highlights

A simple solid-phase reaction method was developed to prepare CB-UV531.
CB-UV531 reveals smaller size and superior dispersibility.
Biodegradable PBAT/CB-UV531 film was prepared via a blowing process.
UV531 migration loss in PBAT/CB-UV531 film is significantly reduced.
PBAT/CB-UV531 film shows enhanced thermal stability and aging resistance.

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固相合成具有优异耐老化性能的可降解聚己二酸丁二酯-对苯二甲酸丁二酯复合膜接枝炭黑

可生物降解薄膜减轻了塑料污染，但往往缺乏抗紫外线老化能力，缩短了它们的使用寿命。虽然抗老化添加剂可以提高薄膜的耐久性，但小分子迁移限制了其使用寿命的延长。本研究介绍了一种直接的固相反应，用于生产接枝UV吸收剂UV531 （CB -UV531）的炭黑（CB）。然后将该材料与可生物降解聚合物PBAT混合，通过吹塑成型转化为薄膜，得到耐用的抗紫外线可生物降解薄膜（PBAT/CB-UV531）。这种固相接枝反应不需要任何溶剂，从而减少了溶剂污染和浪费，操作简单，允许规模化生产。与未改性的CB相比，得到的CB-UV531的热稳定性显著提高，可以有效减少后续高温吹膜过程中UV531的损失。此外，CB-UV531表面的化学结合紫外线吸收剂，加上其减小的粒径，促进了PBAT/CB-UV531膜内的分散性和一致性稳定性，显著提高了其长期抗紫外线老化能力。该方法有望增强各种商用光稳定剂添加剂的抗老化效果，并可用于延长不同生物降解材料的使用寿命。建立了一种简单的固相反应法制备CB-UV531的方法。CB-UV531尺寸小，分散性好。采用吹膜法制备了可生物降解的PBAT/CB-UV531薄膜。PBAT/CB-UV531膜中UV531迁移损失显著降低。PBAT/CB-UV531薄膜具有较好的热稳定性和抗老化性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.