Effect of blending sequence and epoxy functionalized compatibilizer on barrier and mechanical properties of PBS and PBS/PLA nanocomposite blown films

IF 3.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Journal of Vinyl & Additive Technology Pub Date : 2024-02-08 DOI:10.1002/vnl.22092

Salima Adrar, Abdellah Ajji

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引用次数: 0

Abstract

This study focuses on developing compostable nanocomposite blown films, aiming to enhance oxygen barrier properties while maintaining good mechanical performance. Polybutylene succinate (PBS) and its blend with polylactic acid (PLA) were selected as matrices for the films. Organo-montmorillonite Delite®43B (D43B) clay was incorporated to improve oxygen barrier, and random ethylene-methyl acrylate-glycidyl methacrylate terpolymer served as a plasticizer and reactive compatibilizer. Different blending sequences were examined to determine the optimal one that led to significant enhancements in both the barrier and mechanical properties of the final nanocomposite blown film. Various techniques, including SEM, TEM, XRD, DSC, oxygen permeability, and tensile testing were employed to characterize the morphology of the compounds and blown films. The results reveal greater oxygen barrier properties depending on the blending sequence. Indeed, a reduction in oxygen permeability exceeding 50% was observed following the addition of 3 wt% of D43B to the PBS/PLA film, selectively localized in the PLA phase. This enhancement further intensified after the addition of 5 wt% of the epoxy functionalized compatibilizer.

Highlights

Enhancing PLA-PBS compatibility with the epoxy functionalized compatibilizer led to a reduction in the final film's oxygen permeability.
Achieving ideal ductility and barrier balance in films requires a synergistic blend of components: D43B, PLA, PBS, and compatibilizer.
Optimizing balanced synergistic effects among compounds depends on the blending sequence method.

Abstract Image

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混合顺序和环氧功能化相容剂对 PBS 和 PBS/PLA 纳米复合吹膜阻隔性和机械性能的影响

本研究的重点是开发可堆肥纳米复合吹塑薄膜，旨在提高氧气阻隔性能，同时保持良好的机械性能。聚丁二酸丁二醇酯（PBS）及其与聚乳酸（PLA）的混合物被选为薄膜的基质。有机蒙脱土 Delite®43B (D43B) 粘土用于提高氧气阻隔性，无规乙烯-甲基丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物用作增塑剂和活性相容剂。对不同的混合顺序进行了研究，以确定最佳的混合顺序，从而显著提高最终纳米复合吹膜的阻隔性和机械性能。研究采用了各种技术，包括 SEM、TEM、XRD、DSC、氧气渗透性和拉伸测试，以确定化合物和吹塑薄膜的形态特征。结果表明，不同的混合顺序会产生不同的氧气阻隔性能。事实上，在 PBS/PLA 薄膜中添加 3 wt% 的 D43B 后，氧气渗透率的降低幅度超过了 50%，并选择性地分布在聚乳酸相中。在添加 5 wt% 的环氧官能化相容剂后，这种增强作用进一步加强。

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.