The recalcitrant nature of native wheat straw (WS) biomass results from cellulose, lignin, hemicellulose and some amount of protein embedded together in a composite structure causing poor adhesion to a polymer matrix composite. Adequate pre-treatment can curtail the recalcitrance structure of WS and enhance the susceptible cellulose area to synthesize a green composite. This paper examined the effect of various chemical pre-treatment procedures in improving surface morphology of wheat straw. Moreover, polystyrene (PS), PS (60 wt%)/native WS (40 wt%), PS (60 wt%)/NaOH-treated WS (40 wt%), PS (60 wt%)/HCl-treated WS (40 wt%), and PS (60 wt%)/H 2 SO 4 -treated WS (40 wt%) composite films were prepared using solution casting method. The changes in crystalline structure, hydrophobicity, water vapor migration rate, and thermal and mechanical stabilities of synthesized bio-composites were examined. From the results it can be concluded that the alkali-treated WS is highly compatible with the PS and can be used to synthesize a biodegradable composite film for various industrial green packaging applications.

中文翻译：

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聚苯乙烯/化学改性麦秸复合材料绿色包装应用对比研究

天然小麦秸秆 (WS) 生物质的顽固性质是由纤维素、木质素、半纤维素和一些嵌入复合结构中的蛋白质引起的，导致对聚合物基质复合材料的粘附性较差。充分的预处理可以减少 WS 的顽固结构并增强易感纤维素区域以合成绿色复合材料。本文研究了各种化学预处理程序在改善小麦秸秆表面形态方面的效果。此外，聚苯乙烯 (PS)、PS (60 wt%)/天然 WS (40 wt%)、PS (60 wt%)/NaOH 处理的 WS (40 wt%)、PS (60 wt%)/HCl 处理的 WS (40 wt%) 和 PS (60 wt%)/H 2 SO 4 处理的 WS (40 wt%) 复合膜是使用溶液浇铸法制备的。晶体结构、疏水性、水蒸气迁移率的变化，并检查了合成生物复合材料的热稳定性和机械稳定性。从结果可以得出结论，碱处理的 WS 与 PS 高度相容，可用于合成可生物降解的复合膜，用于各种工业绿色包装应用。