Generally, polyamide cannot be used as film blowing material because of its unsuitable properties. In this study, polyamide 6 clay nanocomposite (cPA) and styrene maleic anhydride copolymer (SMA) were mixed in various ratios for the preparation of modified polyamide 6 clay nanocomposite S_xcPA_y resins by reactive extrusion. The S₁cPA₁₄ resin was blended with recycled maleic anhydride polyamide (rPA) to form the (S₁cPA₁₄)_x rPA_y resins. Finally, they were mixed with LDPE in 1:9 ratio to afford (S_xcPA_y)₁LDPE₉ and ((S₁cPA₁₄)_x rPA_y)₁LDPE₉ resins, respectively, followed by film blowing and the analyses of the physicochemical properties of resins. The FTIR spectrum illustrated that the C=O symmetric and asymmetric absorption fingerprint peaks in the anhydride (-OC-O-CO-) group of SMA disappeared and the new characteristic absorption peak of-CO-N-CO- of imides was observed. The anhydride functional group of SMA underwent reactive extrusion with the terminal amino group of cPA to generate the imides structure. The thermal properties showed that the glass transition temperature and crystallinity of S_xcPA_y and (S₁cPA₁₄)_x rPA_y resins increased with increasing SMA and S₁cPA₁₄ contents. The Tg (85.4.0°C) of (S₁cPA₁₄)₁₂ rPA₁ resin were enhanced significantly, with 30°C higher than cPA. In terms of tensile mechanical properties, S₁cPA₁₄ test pieces demonstrated the highest Young’s modulus and tensile strength. After mixing with LDPE, the tensile mechanical properties of (S_xcPA_y)₁LDPE₉ and ((S₁cPA₁₄)_x rPA_y)₁LDPE₉ resins and films were both higher than that of LDPE. ((S₁cPA₁₄)₁₂ rPA₁)₁LDPE₉ film shown the best tensile properties and barrier performance compared with other films due to the optimal rPA content could assisted SMA as a better compatibilizer to improve the dispersion and compatibility of cPA in HDPE. It was worth noting that (S_xcPA_y)₁LDPE₉ and ((S₁cPA₁₄)_x rPA_y)₁LDPE₉ resins were formed by film blowing at the processing temperature of 140°C followed by successful preparation of the film.

通常，聚酰胺由于其不合适的性能而不能用作吹膜材料。在这项研究中，将聚酰胺6粘土纳米复合材料（cPA）和苯乙烯马来酸酐共聚物（SMA）以各种比例混合，以通过反应挤出制备改性的聚酰胺6粘土纳米复合材料S _x cPA _y树脂。将S ₁ cPA ₁₄树脂与回收的马来酸酐聚酰胺（rPA）共混以形成（S ₁ cPA ₁₄）_x rPA _y树脂。最后，将它们与LDPE以1：9的比例混合，得到（S _x cPA _y）₁ LDPE ₉和（（S ₁cPA ₁₄）_x rPA _y）₁ LDPE ₉树脂，然后进行吹膜和树脂的理化性质分析。FTIR光谱表明，SMA的酸酐（-OC-O-CO-）组中的C = O对称和不对称吸收指纹峰消失，观察到新的酰亚胺-CO-N-CO-特征吸收峰。SMA的酸酐官能团与cPA的末端氨基进行反应性挤出，以生成酰亚胺结构。热性质表明，S _x cPA _y和（S ₁ cPA ₁₄）的玻璃化转变温度和结晶度_x rPA _y树脂随着SMA和S ₁ cPA ₁₄含量的增加而增加。（S ₁ cPA ₁₄）₁₂ rPA ₁树脂的Tg（85.4.0°C）显着提高，比cPA高30°C。在拉伸机械性能方面，S ₁ cPA ₁₄测试件显示出最高的杨氏模量和拉伸强度。与LDPE混合后，（S _x cPA _y）₁ LDPE ₉和（（S ₁ cPA ₁₄）_x rPA _y）的拉伸力学性能₁ LDPE ₉树脂和薄膜均高于LDPE。（（S ₁ cPA ₁₄）₁₂ rPA ₁）₁ LDPE ₉薄膜与其他薄膜相比显示出最佳的拉伸性能和阻隔性能，因为最佳的rPA含量可以帮助SMA成为更好的相容剂，从而改善cPA在HDPE中的分散性和相容性。值得注意的是（S _x cPA _y）₁ LDPE ₉和（（S ₁ cPA ₁₄）_x rPA _y）₁ LDPE ₉ 通过在140℃的处理温度下吹膜形成树脂，然后成功地制备膜。