Gheribi Rim, Taleb Yassine, Perrin Louise, Segovia Cesar, Brosse Nicolas, Desobry Stephane
Laboratoire d'Ingénierie des Biomolécules, Université de Lorraine, ENSAIA, 2 Avenue de la Forêt de Haye, BP 20163, 54505 Vandœuvre-lès-Nancy, CEDEX, France.
Centre d'Essais TEchnique LORrain (CETELOR), 27 rue Philippe Seguin, BP 21042, 88051 Épinal, CEDEX 9, France.
Molecules. 2023 Jun 1;28(11):4488. doi: 10.3390/molecules28114488.
The use of bioresourced packaging materials is an interesting solution for ecological issues. This work aimed to develop novel chitosan-based packaging materials reinforced with hemp fibers (HF). For this purpose, chitosan (CH) films were filled with 15%, 30%, and 50% (/) of two kinds of HF: Untreated fibers cut to 1 mm (UHF) and steam exploded fibers (SEHF). The effect of HF addition and HF treatments on chitosan composites was studied in terms of mechanical properties (tensile strength (TS), elongation at break (EB), and Young's modulus (YM)), barrier properties (water vapor (WVP) and oxygen permeabilities), and thermal properties (glass transition (T) and melting temperatures (T)). The addition of HF, whether untreated or steam exploded, increased the TS of chitosan composites by 34-65%. WVP was significantly reduced by the addition of HF but no significant change was observed for O barrier property, which was in the range between 0.44 and 0.68 cm·mm/m·d. T of the composite films increased from 133 °C for CH films to 171 °C for films filled with 15% SEHF. However, no significant modification was observed for T (105-107 °C). The present study showed that the developed biocomposites had improved properties, mainly the mechanical resistance. Their use in food packaging will help industrials the move toward a sustainable development and circular economy.
使用生物源包装材料是解决生态问题的一个有趣方案。这项工作旨在开发以壳聚糖为基础、用麻纤维（HF）增强的新型包装材料。为此，壳聚糖（CH）薄膜填充了两种麻纤维的15%、30%和50%（/）：切成1毫米的未处理纤维（UHF）和蒸汽爆破纤维（SEHF）。从机械性能（拉伸强度（TS）、断裂伸长率（EB）和杨氏模量（YM））、阻隔性能（水蒸气（WVP）和氧气渗透率）以及热性能（玻璃化转变温度（T）和熔点（T））方面研究了添加麻纤维和麻纤维处理对壳聚糖复合材料的影响。添加麻纤维，无论是未处理的还是蒸汽爆破的，都使壳聚糖复合材料的拉伸强度提高了34 - 65%。添加麻纤维显著降低了水蒸气透过率，但氧气阻隔性能没有显著变化，其范围在0.44至0.68厘米·毫米/米·天之间。复合薄膜的玻璃化转变温度从CH薄膜的133℃提高到填充15% SEHF的薄膜的171℃。然而，熔点（105 - 107℃）没有观察到显著变化。本研究表明，所开发的生物复合材料性能得到了改善，主要是机械抗性。它们在食品包装中的应用将有助于工业界朝着可持续发展和循环经济迈进。
