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Abstract：
In this study, a new composite material is developed using a semi bio-based polypropylene (bioPP) and micronized argan shell (MAS) byproducts. To improve the interaction between the filler and the polymer matrix, a compatibilizer, PP-g-MA, is used. The samples are prepared using a co-rotating twin extruder followed by an injection molding process. The addition of the MAS filler improves the mechanical properties of the bioPP, as evidenced by an increase in tensile strength from 18.2 MPa to 20.8 MPa. The reinforcement is also observed in the thermomechanical properties, with an increased storage modulus. The thermal characterization and X-ray diffraction indicate that the addition of the filler leads to the formation of α structure crystals in the polymer matrix. However, the addition of a lignocellulosic filler also leads to an increased affinity for water. As a result, the water uptake of the composites increases, although it remains relatively low even after 14 weeks. The water contact angle is also reduced. The color of the composites changes to a color similar to wood. Overall, this study demonstrates the potential of using MAS byproducts to improve their mechanical properties. However, the increased affinity with water should be taken into account in potential applications.
摘要：
在这项研究中,使用半生物基聚丙烯（bioPP）和微粉化摩洛哥壳（MAS）副产品开发了一种新的复合材料。为了改善填料和聚合物基体之间的相互作用，一种相容剂,PP-g-MA,使用。使用同向旋转双挤出机,然后通过注塑工艺制备样品。MAS填料的加入提高了生物PP的机械性能,如拉伸强度从18.2MPa增加到20.8MPa所证明的。在热机械性能方面也观察到了增强作用，具有增加的储能模量。热表征和X射线衍射表明，填料的添加导致在聚合物基体中形成α结构晶体。然而,添加木质纤维素填料还导致对水的亲和力增加。因此,复合材料的吸水率增加，即使在14周后，它仍然相对较低。水接触角也减小。复合材料的颜色变为类似于木材的颜色。总的来说,这项研究证明了使用MAS副产品来改善其机械性能的潜力。然而,在潜在的应用中，应考虑与水增加的亲和力。
