CAJ | 학술논문

采用聚丙烯(PP)接枝马来酸酐(PP-g-MAH)为增容剂，通过母料-熔融共混法制备了乙二胺(EDA)共价功能化改性石墨烯片(GS)(GS-EDA)掺杂的PP纳米复合材料。傅立叶变换红外光谱、X射线衍射和扫描电子显微镜、力学性能和熔体流动速率(MFR)测试表明，EDA已成功接枝于氧化石墨烯的表面；共混过程中，PP-g-MAH的酐基与EDA的氨基发生反应改善了共混体系的界面相容性；GS-EDA在母料-熔融共混过程中均匀分散于基体中；随着GS-EDA含量的增加，复合材料的拉伸强度先增大后降低，当GS-EDA质量分数为0.5%时，复合材料的拉伸强度达到最大值，比PP/PP-g-MAH提高了18.9%，比纯PP提高了13.4%；随着GS-EDA含量的增加，复合材料的MFR先增大后降低，在GS-EDA质量分数为0.5%时达到最大值。
채용취병희(PP)접지마래산항(PP-g-MAH)위증용제，통과모료-용융공혼법제비료을이알(EDA)공개공능화개성석묵희편(GS)(GS-EDA)참잡적PP납미복합재료。부립협변환홍외광보、X사선연사화소묘전자현미경、역학성능화용체류동속솔(MFR)측시표명，EDA이성공접지우양화석묵희적표면；공혼과정중，PP-g-MAH적항기여EDA적안기발생반응개선료공혼체계적계면상용성；GS-EDA재모료-용융공혼과정중균균분산우기체중；수착GS-EDA함량적증가，복합재료적랍신강도선증대후강저，당GS-EDA질량분수위0.5%시，복합재료적랍신강도체도최대치，비PP/PP-g-MAH제고료18.9%，비순PP제고료13.4%；수착GS-EDA함량적증가，복합재료적MFR선증대후강저，재GS-EDA질량분수위0.5%시체도최대치。
Polypropylene(PP) nanocomposites filled with ethylenediamine(EDA) covalently functionalized graphene oxide sheets(GS)(GS-EDA) were prepared by masterbatch-melting blending with PP-g-MAH being used as a compatibilizer. The effects of covalent functionalization and the microstructure of the resultant PP/PP-g-MAH/GS-EDA nanocomposites were characterized by means of Fourier transform infrared spectroscopy,X-ray diffraction and Scanning electron microscope. The mechanical properties and melt flow rate(MFR) of the nanocomposites were also been investigated. These results indicate that EDA is successfully grafted onto GS. The reactions between the GS-EDA and PP-g-MAH have been taken place during the blending process,which improves effectively the interfacial interactions of blending systems. PP-g-MAH plays the role of compatibilizer. GS-EDA has been dispersed well in the matrix. The tensile strength of the nanocomposites increases firstly and then decreases with increasing GS-EDA content, and reaches a maximum value when the mass fraction of GS-EDA is 0.5%,which is improved 18.9%compared with PP/PP-g-MAH and 13.4% with pure PP;the MFR increases firstly,then decreases with increasing GS-EDA contents and achieves a maximum value at the 0.5%GS-EDA addition.