Dual role of epoxidized soybean oil (ESO) as plasticizer and chain extender for biodegradable polybutylene succinate (PBS) formulations

IF 5.4 1区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY GIANT Pub Date : 2024-07-23 DOI:10.1016/j.giant.2024.100328
Rosa Turco , Salvatore Mallardo , Domenico Zannini , Arash Moeini , Martino Di Serio , Riccardo Tesser , Pierfrancesco Cerruti , Gabriella Santagata
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Abstract

This work reports the effect of 1–5 wt% epoxidized soybean oil (ESO) addition on the thermal, mechanical, and morphological properties of polybutylene succinate (PBS). ESO acts as a chain extender as well as a mild plasticizer of PBS. N-methylimidazole (NMI) is used as a catalyst to promote the reaction between PBS and ESO, and thermal, rheological, and spectroscopic analyses demonstrate increased viscoelastic properties, compatibility, crystallinity and thermal stability of the melt reacted formulations. In the presence of NMI, storage modulus (G’) values two orders of magnitude higher than that of pure PBS are achieved, confirming the completion of the chain extension reaction. A drastic refinement of the biphasic structure of the blend is observed, with the formation of a homogenous structure where ESO is well incorporated into the matrix. Finally, tensile tests reveal enhanced mechanical performance in the blends reacted in the presence of NMI. These findings pave the way for the development of a versatile family of materials which could find potential application in sustainable biodegradable packaging.

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环氧化大豆油(ESO)作为可生物降解聚丁二酸丁二醇酯(PBS)配方的增塑剂和扩链剂的双重作用
本研究报告介绍了添加 1-5 wt%环氧化大豆油(ESO)对聚丁二酸丁二醇酯(PBS)的热、机械和形态特性的影响。ESO 既是 PBS 的扩链剂,也是一种温和的增塑剂。N 甲基咪唑(NMI)被用作催化剂来促进 PBS 和 ESO 之间的反应,热学、流变学和光谱分析表明,熔融反应配方的粘弹性能、相容性、结晶度和热稳定性都有所提高。在 NMI 的存在下,存储模量(G')值比纯 PBS 高出两个数量级,这证明链延伸反应已经完成。共混物的双相结构得到了显著改善,形成了一种均匀的结构,其中 ESO 与基质结合得很好。最后,拉伸测试表明,在 NMI 存在的情况下反应的共混物具有更高的机械性能。这些发现为开发多功能材料系列铺平了道路,这些材料可能会应用于可持续生物降解包装。
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来源期刊
GIANT
GIANT Multiple-
CiteScore
8.50
自引率
8.60%
发文量
46
审稿时长
42 days
期刊介绍: Giant is an interdisciplinary title focusing on fundamental and applied macromolecular science spanning all chemistry, physics, biology, and materials aspects of the field in the broadest sense. Key areas covered include macromolecular chemistry, supramolecular assembly, multiscale and multifunctional materials, organic-inorganic hybrid materials, biophysics, biomimetics and surface science. Core topics range from developments in synthesis, characterisation and assembly towards creating uniformly sized precision macromolecules with tailored properties, to the design and assembly of nanostructured materials in multiple dimensions, and further to the study of smart or living designer materials with tuneable multiscale properties.
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