Influences of purification and surface treatment of sugarcane bagasse ash on mechanical properties of natural rubber composites,Polymer Engineering and Science

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Influences of purification and surface treatment of sugarcane bagasse ash on mechanical properties of natural rubber composites
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2021-08-19 , DOI: 10.1002/pen.25785
Supparoek Boopasiri _{1,

2} , Noottiyaporn Suwantrakrit ₁ , Pongdhorn Sae‐Oui ₃ , Chomsri Siriwong _{1,

2}

Affiliation

Attempts to use bagasse ash (BA) as a filler in natural rubber (NR) have been made. Acidolysis/alkaline extraction method was used to purify BA. The purified BA (PBA) was subsequently characterized by various techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and so forth. After the purification, PBA had a lower particle size and a higher specific surface area. XRD results showed that silica was the main composition of PBA while FTIR results revealed the existence of hydroxyl groups on the PBA surface. The reinforcement magnitude of PBA in NR was subsequently evaluated both without and with the addition of surface modifying agents, namely, bis-3-triethoxysilylpropyl tetrasulfide (TESPT) and epoxidized natural rubber (ENR). Due to its large particle size, PBA acted as a semi-reinforcing filler for NR, that is, the small increases of hardness, modulus and tensile strength were observed in the presence of PBA. As TESPT and ENR could improve the extent of rubber-filler interaction, mechanical properties of the NR vulcanizates filled with PBA-TESPT and PBA-ENR were slightly higher than those of the PBA-filled NR vulcanizate. For instance, tensile strength exhibited approximately 22% increase after the surface treatment. In this study, both PBA-TESPT and PBA-ENR showed comparable degree of reinforcement.

中文翻译：

甘蔗渣灰分净化及表面处理对天然橡胶复合材料力学性能的影响

已经尝试使用甘蔗渣灰分 (BA) 作为天然橡胶 (NR) 中的填料。酸解/碱提取法用于纯化BA。随后通过各种技术对纯化的 BA (PBA) 进行表征，例如 X 射线衍射 (XRD)、傅里叶变换红外光谱 (FTIR) 等。纯化后的 PBA 具有较小的粒径和较高的比表面积。XRD 结果表明二氧化硅是 PBA 的主要成分，而 FTIR 结果表明 PBA 表面存在羟基。随后评估了 NR 中 PBA 的增强程度，无论是否添加表面改性剂，即双-3-三乙氧基甲硅烷基丙基四硫化物 (TESPT) 和环氧化天然橡胶 (ENR)。由于其粒径大，PBA 作为 NR 的半增强填料，即在 PBA 存在下观察到硬度、模量和拉伸强度的小幅增加。由于TESPT和ENR可以提高橡胶-填料相互作用的程度，填充PBA-TESPT和PBA-ENR的NR硫化胶的力学性能略高于填充PBA的NR硫化胶。例如，在表面处理后，拉伸强度表现出大约 22% 的增加。在这项研究中，PBA-TESPT 和 PBA-ENR 都显示出相当程度的强化。

更新日期：2021-10-01

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