Gamma irradiation-induced enhancement of agar-based bioplastics incorporating poly(lactic acid) and poly(butylene adipate-co-terephthalate)

IF 3.5 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2026-06-01 Epub Date: 2026-01-30 DOI:10.1016/j.radphyschem.2026.113673

Angelica Isabella Christian , Farah Nurlidar , Dien Puji Rahayu , Ade Lestari Yunus , Tita Puspitasari , Yudi Nugraha Thaha , Lutviasari Nuraini , Rossy Choreun Nissa , Yeyen Nurhamiyah

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引用次数: 0

Abstract

This study explores the fabrication of biodegradable bioplastics based on agar, poly(lactic acid) (PLA), and poly(butylene adipate-co-terephthalate) (PBAT), enhanced through cobalt-60 gamma irradiation to improve their mechanical, thermal, and degradation behavior. A range of irradiation doses (0–50 kGy) was applied to evaluate the effects of crosslinking and chain scission on material performance. The tensile strength showed a marked improvement, increasing from 2.72 ± 1.94 MPa (0 kGy) to 6.01 ± 0.92 MPa at 30 kGy, indicating enhanced mechanical integrity due to effective crosslinking. In parallel, water absorption decreased dramatically from 83.03% to 15.22%, reflecting a significant reduction in hydrophilicity. At higher doses, degradation processes became more prominent, as evidenced by increased melt flow rate and biodegradability. These findings demonstrate that controlled gamma irradiation is an effective approach to fine-tune the performance and environmental responsiveness of agar-based bioplastics, making them more suitable for sustainable packaging and related applications.

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γ射线辐照增强聚乳酸和聚己二酸丁二醇-对苯二甲酸酯的琼脂基生物塑料

本研究探索了基于琼脂、聚乳酸（PLA）和聚己二酸丁二醇酯（PBAT）的可生物降解生物塑料的制备，并通过钴-60 γ辐射增强以改善其机械、热和降解行为。采用0-50 kGy辐照剂量范围评价交联和断链对材料性能的影响。拉伸强度明显提高，从2.72±1.94 MPa （0 kGy）增加到6.01±0.92 MPa (30 kGy)，表明有效交联提高了机械完整性。同时，吸水率从83.03%急剧下降到15.22%，反映亲水性显著降低。在较高的剂量下，降解过程变得更加突出，如增加的熔体流动速率和生物降解性所证明的那样。这些发现表明，受控伽马辐射是一种有效的方法，可以微调琼脂基生物塑料的性能和环境响应性，使其更适合可持续包装和相关应用。

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

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.