This study aimed towards the fabrication of biodegradable packaging films using carboxymethyl guar gum (CMG) as the base material. Various ratios of glycerol (Gly) as a plasticizer and glutaraldehyde (Glu) as a cross-linker were employed in the synthesis of these biopolymer-based films through the solution casting technique. Comprehensive characterization, such as attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM), was conducted. The films were further examined for tensile strength, percent elongation, thickness, solubility in water, gloss, haze, and transparency. The maximum tensile strength of 37.82 MPa, maximum percent elongation of 124.20%, maximum gloss of 25.52% at a 20° angle, maximum haze of 41.93%, maximum transparency of 88.53%, and a minimum water solubility of 60.42% were observed for the developed films. This reveals that CMG-based films hold promising potential as a novel biomaterial for future applications in packaging, such as edible coatings and water-soluble, biodegradable packaging films.

Graphical Abstract

中文翻译：

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用于包装应用的基于羧甲基瓜尔胶的可持续薄膜的制造和评估

本研究旨在以羧甲基瓜尔胶（CMG）为基础材料制造可生物降解的包装薄膜。通过溶液流延技术合成这些生物聚合物基薄膜时，采用不同比例的甘油（Gly）作为增塑剂和戊二醛（Glu）作为交联剂。进行了综合表征，例如衰减全反射傅里叶变换红外光谱（ATR-FTIR）、差示扫描量热法（DSC）、热重分析（TGA）和扫描电子显微镜（SEM）。进一步检查薄膜的拉伸强度、伸长率、厚度、水溶性、光泽度、雾度和透明度。观察到的最大拉伸强度为 37.82 MPa，最大伸长率为 124.20%，20° 角最大光泽度为 25.52%，最大雾度为 41.93%，最大透明度为 88.53%，最小水溶性为 60.42%。开发的电影。这表明，基于 CMG 的薄膜作为未来包装应用的新型生物材料具有广阔的潜力，例如可食用涂层和水溶性、可生物降解的包装薄膜。

图形概要