The Effect of Different Concentration of NaOH on Mechanical Properties of Allium sativum L. Peels Thin Sheet Paper

Q4 Multidisciplinary

ASM Science Journal Pub Date : 2023-11-09 DOI:10.32802/asmscj.2023.1519

MOHAMMAD HARRIS M YAHYA, AHMAD ASNAWI NASIR, NORMALA HASSIM, AMRAN SHAFIE, NOOR AZRIMI UMOR, ZUBIR OTHMAN, MOHD ROZI AHMAD

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Abstract

Allium sativum L. peels were used as raw material to obtain cellulosic pulps for paper making. The peels were treated with sodium hydroxide at different concentrations (5%, 12.5%, and 20%) before the paper production. The sheets were measured for weight and thickness and evaluated for tensile, tear and bursting strength. The chemical compositions of the peels were analysed. The results indicated that the peels are suitable for papermaking due to the appropriate contents of cellulose (37.22%), hemicellulose (35.21%) and lignin (9.96%) values. The colour of the sheets varies from dark to light brown when the amount of sodium hydroxide solution was increased. It was estimated that the weight of peels was in the range of 5.0 - 6.5 % of garlic clove. All the sheet samples have uniform weight and thickness. The results showed that increasing sodium hydroxide concentration from 5% to 20% decreased tensile and bursting strength, except tearing strength. Two kinds of microscopic observations showed that peels treated with the highest sodium hydroxide concentration had a fine and thin layer of binder within the fibres. The sheets appear to be transparent with due to a decrease in the tensile and bursting strength except for the tear strength.

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不同浓度NaOH对大蒜机械性能的影响

以葱皮为原料制备纤维素纸浆，用于造纸。在造纸前用不同浓度(5%、12.5%和20%)的氢氧化钠处理果皮。测量了薄片的重量和厚度，并评估了拉伸、撕裂和破裂强度。对果皮的化学成分进行了分析。结果表明，该果皮中纤维素(37.22%)、半纤维素(35.21%)和木质素(9.96%)含量适宜，适合用于造纸。当氢氧化钠溶液的量增加时，床单的颜色从深色到浅棕色不等。经测定，其果皮重量为蒜瓣的5.0 ~ 6.5%。所有的片材样品都有均匀的重量和厚度。结果表明，当氢氧化钠浓度从5%增加到20%时，除撕裂强度外，拉伸强度和破裂强度均有所下降。两种显微观察表明，用最高浓度氢氧化钠处理的果皮在纤维内有一层细而薄的粘合剂。除撕裂强度外，由于拉伸强度和破裂强度的降低，板材呈透明状。

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来源期刊

ASM Science Journal Multidisciplinary-Multidisciplinary

CiteScore

0.60

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0.00%

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期刊介绍： The ASM Science Journal publishes advancements in the broad fields of medical, engineering, earth, mathematical, physical, chemical and agricultural sciences as well as ICT. Scientific articles published will be on the basis of originality, importance and significant contribution to science, scientific research and the public. Scientific articles published will be on the basis of originality, importance and significant contribution to science, scientific research and the public. Scientists who subscribe to the fields listed above will be the source of papers to the journal. All articles will be reviewed by at least two experts in that particular field.