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Effect of Halloysite Nanotube on Mechanical Properties Thermal Stability and Morphology of Polypropylene and Polypropylene/Short Kenaf Fibers Hybrid Biocomposites

機(jī)譯：Halloysite Nanotube對(duì)聚丙烯和聚丙烯/短KENAF纖維雜交生物復(fù)合材料的力學(xué)性能熱穩(wěn)定性和形態(tài)的影響

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In this article, the effect of the addition of halloysite nanotube (HNT) on the mechanical and thermal stability of polypropylene (PP) and PP/kenaf fiber biocomposites has been investigated. Different volume contents of HNTs ranging from 1 to 10 vol.% were melt mixed with PP and PP/kenaf fibers. The volume content of kenaf fibers was kept constant at 30%. The morphology of HNTs within the PP matrix has been studied via scanning electron microscopy (SEM). The morphological results revealed that HNT was uniformly dispersed in the PP matrix already at a low concentration of 1 and 2 vol.%. The mechanical properties of the manufactured nanocomposites and hybrid biocomposites such as Young’s modulus, tensile strength, elongation at break, flexural modulus, flexural strength, and notched Izod strength have been measured. The results show that Young’s modulus and strengths have been improved along with the addition of low content of HNTs. Moreover, the gain of notched Izod impact strength obtained by the addition of short kenaf fibers was maintained in hybrids with low concentrations of HNTs. Finally, the thermogravimetric analysis shows that at 10% and 50% weight loss, the thermal degradation rate of the PP and PP/kenaf biocomposites decreased by the addition of HNTs.
機(jī)譯：在本文中，研究了在聚丙烯（PP）和PP / KENAF纖維生物復(fù)合材料的機(jī)械和熱穩(wěn)定性上加入霍氏鐵納米管（HNT）的效果。不同體積含量為1-10體積。％熔融與PP和PP / KENAF纖維混合。 KENAF纖維的體積含量保持恒定在30％。通過(guò)掃描電子顯微鏡（SEM）研究了PP矩陣內(nèi)HNT的形態(tài)。形態(tài)學(xué)結(jié)果表明，HNT均勻地分散在PP基質(zhì)中，以低至1和2體積％。％。已經(jīng)測(cè)量了制造的納米復(fù)合材料和混合生物復(fù)合材料的機(jī)械性能，例如楊氏模量，抗拉強(qiáng)度，斷裂處的伸長(zhǎng)率，彎曲模量，彎曲強(qiáng)度和缺口強(qiáng)度。結(jié)果表明，楊氏模量和強(qiáng)度隨著HNT的含量低而得到改善。此外，通過(guò)添加短kEnaf纖維獲得的缺口Izod碰撞強(qiáng)度的增益維持在具有低濃度HNT的雜交物中。最后，熱重分析表明，在10％和50％的體重減輕下，PP和PP / keNAF生物復(fù)合材料的熱降解率通過(guò)加入HNT而降低。

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