The Influence of Crosslink Chemicals on the Mechanical Strength and Water Absorption of Rice Straw-Based Green Composites

ABSTRACT

The present work reports the influence of crosslink chemicals (vinyltrimethoxylsilane, dicumyl peroxide, and dibutyl dilaurate) on the mechanical strength and water absorption of the rice straw/high density polyethylene bio-composites. As revealed by the Fourier transform infrared spectra, the surface interaction between the fibers and polymer was improved through the use of vinyltrimethoxylsilane (coupling agent). By properly regulating the dicumyl peroxide (radical initiator) and dibutyl dilaurate (catalyst), the surface interaction was further enhanced, and thus the tensile and flexural strength. These observations were validated by the reduction in the water absorption of the bio-composites as well as the fracture surface examination.

摘要

在本研究中，考察了交联化学品（乙烯基三甲氧基硅烷、过氧化二异丙苯、二月桂酸二丁酯）对稻草/高密度聚乙烯生物复合材料的机械强度和吸水性的影响。傅里叶变换红外光谱显示，使用乙烯基三甲氧基硅烷（偶联剂）改善了纤维与聚合物之间的表面相互作用；适当调节过氧化二异丙苯（自由基引发剂）和二月桂酸二丁酯（催化剂），可进一步增强其表面相互作用，进而增强拉伸和弯曲强度。上述观察结果可通过检查生物复合材料吸水率的降低和破裂表面来得到验证。

KEYWORDS:

• Crosslink chemicals
• high density polyethylene
• mechanical strength
• polymer composites
• rice straw
• water absorption

关键词:

• 交联化学品
• 高密度聚乙烯
• 机械强度
• 聚合物复合材料
• 稻草
• 吸水率

Funding

This research work was supported by the postdoctoral fellowship scheme Universiti Teknologi Malaysia (Q.J130000.21A2.03E09).

Additional information

Funding

This research work was supported by the postdoctoral fellowship scheme Universiti Teknologi Malaysia (Q.J130000.21A2.03E09).