Utilizing gamma irradiation-induced oxidation on recycled high-density polyethylene to produce a compatibilizer for fabrication of waste-derived wood-polymer composite

IF 1.6 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-09-01 DOI:10.1007/s10967-025-10358-x

Tita Puspitasari, Adam Febriyanto Nugraha, Farah Nurlidar, Ade Lestari Yunus, Muhammad Caessar, Maurice Efroza, Mochamad Chalid, Uwe Gohs

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Abstract

In fabrication of wood polymer composites (WPC), a compatibilizer plays an important role in enhancing interfacial adhesion between polymeric matrix and wood filler. This study investigated the effects of gamma irradiation-induced oxidation on recycled high-density polyethylene (rHDPE) to be used as a compatibilizer for WPC production. FTIR analysis showed that gamma irradiation induces significant functional group modifications, as demonstrated by the rising of carbonyl index as the irradiation doses increase up to 200 kGy. Differential scanning calorimetry analysis reveals that irradiation lowers melting temperature, indicating a chain scission in the rHDPE. Additional assessments of wetting angle, work of adhesion, spreading coefficient, and surface energy confirmed the aforementioned findings. Mechanical testing of the WPC made from rHDPE reinforced with oil palm empty fruit bunch (OPEFB) showed that an optimal formulation of 78 wt% rHDPE, 2 wt% irradiated rHDPE (i-rHDPE) 200 kGy as a compatibilizer, and 20 wt% OPEFB yields the most optimum mechanical strength. This indicates a strong interfacial adhesion between the rHDPE and OPEFB in the presence of i-rHDPE as the compatibilizer. These findings suggest that gamma irradiation has strong potential to induce surface modification through radiation induced-oxidation on the rHDPE and enhance its hydrophilicity properties. Thus, it can be utilized as a compatibilizer for the WPC production.

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利用伽玛辐射诱导氧化再生高密度聚乙烯生产一种增容剂，用于制造废物来源的木聚合物复合材料

在木材聚合物复合材料的制备中，增容剂对增强聚合物基体与木材填料之间的界面附着力起着重要的作用。研究了辐照氧化对再生高密度聚乙烯（rHDPE）增容剂生产木塑的影响。FTIR分析表明，辐照引起了显著的官能团修饰，随着辐照剂量的增加，羰基指数上升，辐照剂量达到200 kGy。差示扫描量热分析表明，辐照降低了熔融温度，表明rHDPE中的链断裂。对润湿角、附着功、扩散系数和表面能的进一步评估证实了上述发现。对油棕空果串（OPEFB）增强rHDPE复合材料的力学性能进行了测试，结果表明，rHDPE的最佳配比为78%，辐照rHDPE （i-rHDPE）为2%，增容剂为200kgy， OPEFB为20%，机械强度最佳。这表明在i-rHDPE作为相容剂存在时，rHDPE与OPEFB之间具有很强的界面粘附性。这些发现表明，伽马辐射有很强的潜力通过辐射诱导氧化对rHDPE进行表面改性，并增强其亲水性。因此，它可以作为一种增容剂用于木塑生产。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.