Extraction and Characterization Chemical Treated and Untreated Lycium ferocissimum Fiber for Epoxy Composites

ABSTRACT

The current study deals with the extraction and characterization of natural cellulose fibers from Lycium ferocissimum plant stems. The fibers were retted using a manual retting process and were subjected to benzoylation treatment. The properties namely physio-chemical, thermal, crystalline, and morphological were measured for both untreated and chemical treated Lycium ferocissimum fibers. Then, the epoxy composites were fabricated using chemical treated and untreated Lycium ferocissimum fibers and analyzed for their mechanical performance. The cellulose content was 67.19%, with the crystalline index of 47.7% for the benzoyl chloride treated Lycium ferocissimum fibers, which were substantially higher than untreated Lycium ferocissimum fibers. While the epoxy composites containing benzoyl chloride treated Lycium ferocissimum fibers showed an increase in the ultimate flexural strength of 51.3 MPa, while it was 42 MPa for untreated Lycium ferocissimum fiber-based composite. Thus, the test results elucidated that benzoyl chloride treatment reduced Lycium ferocissimum fibers hydrophilicity that induced fiber wettability with the matrix to better mechanical properties compared to untreated Lycium ferocissimum fiber-based composites.

摘要

本研究探讨了从植物茎中提取天然纤维素纤维及其特性. 纤维采用手工脱胶工艺进行脱胶，并进行苯甲酰化处理. 对未经处理和化学处理的Lycium ferocissimum纤维的理化、热、结晶和形态等性能进行了测试. 采用化学处理和未处理的Lycium ferocissimum纤维制备了环氧复合材料，并对其力学性能进行了分析. 苯甲酰氯处理的枸杞纤维纤维素含量为67.19%，结晶指数为47.7%，明显高于未处理的LLLL纤维. 而含苯甲酰氯处理Lycium ferocissimum纤维的环氧复合材料的极限弯曲强度增加了51.3mpa，而未处理Lycium ferocissimum纤维基复合材料的极限弯曲强度增加了42mpa. 因此，试验结果表明，与未经处理的Lycium ferocissimum纤维基复合材料相比，苯甲酰氯处理降低了Lycium ferocissimum纤维的亲水性，从而使纤维与基体的润湿性得到改善.

KEYWORDS:

• Lycium ferocissimum
• natural cellulose fiber
• benzoyl chloride
• epoxy composite

关键词:

• 天然纤维素纤维
• 苯甲酰氯
• 环氧复合材料