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用硅藻土生物填料增强的聚酰胺11复合材料——力学、流变学和结晶性能

Polyamide 11 Composites Reinforced with Diatomite Biofiller-Mechanical, Rheological and Crystallization Properties.

作者信息

Dobrosielska Marta, Dobrucka Renata, Brząkalski Dariusz, Kozera Paulina, Martyła Agnieszka, Gabriel Ewa, Kurzydłowski Krzysztof J, Przekop Robert E

机构信息

Faculty of Materials Science and Engineering, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland.

Department of Non-Food Products Quality and Packaging Development, Institute of Quality Science, Poznań University of Economics and Business, al. Niepodległości 10, 61-875 Poznań, Poland.

出版信息

Polymers (Basel). 2023 Mar 21;15(6):1563. doi: 10.3390/polym15061563.

DOI:10.3390/polym15061563
PMID:36987343
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10053006/
Abstract

Amorphic diatomaceous earth is derived from natural sources, and polyamide 11 (PA11) is produced from materials of natural origin. Both of these materials show a low harmfulness to the environment and a reduced carbon footprint. This is why the combination of these two constituents is beneficial not only to improve the physicochemical and mechanical properties of polyamide 11 but also to produce a biocomposite. For the purpose of this paper, the test biocomposite was produced by combining polyamide 11, as well as basic and pre-fractionated diatomaceous earth, which had been subjected to silanization. The produced composites were used to carry out rheological (melt flow rate-MFR), mechanical (tensile strength, bending strength, impact strength), crystallographic (X-ray Diffraction-XRD), thermal and thermo-mechanical (differential scanning calorimetry-DSC, dynamic mechanical thermal analysis-DMTA) analyses, as well as a study of hydrophobic-hydrophilic properties of the material surface (wetting angle) and imaging of the surface of the composites and the fractured specimens. The tests showed that the additive 3-aminopropyltriethoxysilane (APTES) acted as an agent that improved the elasticity of composites and the melt flow rate. In addition, the produced composites showed a hydrophilic surface profile compared to pure polylactide and polyamide 11.

摘要

无定形硅藻土源自天然资源，聚酰胺11（PA11）由天然原料制成。这两种材料对环境的危害都很低，且碳足迹较小。这就是为什么这两种成分的组合不仅有利于改善聚酰胺11的物理化学和机械性能，还能生产生物复合材料。在本文中，测试用生物复合材料是通过将聚酰胺11以及经过硅烷化处理的基础硅藻土和预分级硅藻土混合制成的。所制备的复合材料用于进行流变学（熔体流动速率-MFR）、力学（拉伸强度、弯曲强度、冲击强度）、晶体学（X射线衍射-XRD）、热学和热机械（差示扫描量热法-DSC、动态热机械分析-DMTA）分析，以及材料表面疏水亲水性（接触角）研究和复合材料及断裂试样表面成像。测试表明，添加剂3-氨丙基三乙氧基硅烷（APTES）起到了提高复合材料弹性和熔体流动速率的作用。此外，与纯聚乳酸和聚酰胺11相比，所制备的复合材料表面呈现亲水性。

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