Compatibility induced gamma radiation of Agar/PBAT blends: Impact on material properties

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2024-12-24 DOI:10.1016/j.radphyschem.2024.112487

Rossy Choerun Nissa , Aisyah Hanifah , Efri Mardawati , Pramono Nugroho , Misri Gozan , Kasbawati Kasbawati , Biqiong Chen , Yeyen Nurhamiyah

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Abstract

Agar and polybutylene adipate-co terephthalate (PBAT) blend pellets were prepared by melt-extrusion with a high agar composition. The resulting plastic pellets were treated with gamma radiation to induces crosslinking and compatibilized the blending. The blending was irradiated in various doses, which was 10 kGy, 30 kGy, and 50 kGy. The effect of gamma irradiation on the plastic pellet were studied in terms of chemical structure, thermal properties, tensile properties, water resistivity and biodegradability. The irradiation 30 kGy increases the tensile strength from 3.21 MPa to 4.51 MPa, implying successful modification with radiation. The melting temperature (T_m) increased by irradiation doses from 91 °C to 110 °C. The crosslinking reaction of gamma irradiation causes the improved mechanical and thermal properties of irradiation agar/PBAT pellets. The water resistivity decreased, causing the formation of hydrophobic groups in the agar/PBAT pellet after irradiation. It is revealed that the 30 kGy irradiation dose is the optimum dose of radiation as it increases the tensile strength and decreases the water sensitivity significantly. The gamma irradiation reduced degradation with microbial growth from 82,91% to 75,88%, resulting in an improved antibacterial activity. These results show that gamma radiation can improve the properties of agar/PBAT plastic pellets and potentially be used as an antibacterial packaging.

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琼脂/PBAT共混物的相容性诱导γ辐射：对材料性能的影响

采用熔融挤出法制备了琼脂与聚己二酸丁二酯（PBAT）共混微球。所得到的塑料球团用伽马射线处理以诱导交联和增容共混。共混物以10 kGy、30 kGy和50 kGy的不同剂量辐照。从化学结构、热性能、拉伸性能、电阻率和生物降解性等方面研究了辐照对塑料球团的影响。辐照强度为30 kGy时，拉伸强度由3.21 MPa提高到4.51 MPa，表明辐照改性成功。随着辐照剂量的增加，熔化温度（Tm）从91℃升高到110℃。辐照交联反应改善了辐照琼脂/PBAT微球的力学性能和热性能。辐照后琼脂/PBAT颗粒的水电阻率降低，形成疏水性基团。结果表明，30 kGy的辐照剂量可显著提高材料的抗拉强度，降低材料的水敏感性，是最佳辐照剂量。伽马辐射使微生物的降解率从82,91%降低到75,88%，从而提高了抗菌活性。这些结果表明，伽马辐射可以改善琼脂/PBAT塑料颗粒的性能，并有可能用作抗菌包装。

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.