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首页> 外文期刊>Journal of Polymers and the Environment >Effect of Additives on the Improvement of Mechanical and Degradable Properties of Photografted Jute Yarn with Acrylamide
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Effect of Additives on the Improvement of Mechanical and Degradable Properties of Photografted Jute Yarn with Acrylamide

机译：添加剂对丙烯酰胺改善光接枝黄麻纱线力学性能和降解性能的影响

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摘要

The jute yarn was grafted with acrylamide monomer (AA) under ultraviolet (UV) radiation to modify its mechanical and degradable properties. A number of AA solutions of different concentrations in methanol (MeOH) along with photoinitiator Irgacure 907 [2-methyl-1-(4-methylthiophenyl)-2-morpholinopropanone-1] were prepared. The monomer concentration and irradiation time were optimized. Jute yarn grafted with 30% AA under UV radiation for 60 min showed of the highest polymer loading (PL) value of 22% with a enhanced tensile strength (TS) value of 195% and elongation at break (Eb) value of 256% compared to untreated jute yarn. To further improve the properties of jute yarn, a number of additives (1%) such as urea, polyvinylpyrrolidone, urethane acrylate, and urethane diacrylate were used in the AA (30%) solution. Among all the additives used, urea significantly influenced the PL (27%), TS (230%), and Eb (264%) values of the treated jute yarns. Water uptake and the degradation properties of treated and untreated jute yarn caused by simulated weathering and in soil (25% water) were also studied. The rate of degradation of grafted sample is lower then that of untreated sample. DSC studies showed the thermal stability of the AA plus urea grafted sample.
机译：黄麻纱在紫外线（UV）辐射下接枝了丙烯酰胺单体（AA），以改变其机械性能和降解性能。制备了许多不同浓度的甲醇（MeOH）的AA溶液，以及光引发剂Irgacure 907 [2-甲基-1-（4-甲基硫代苯基）-2-吗啉代丙烷-1]。优化了单体浓度和照射时间。在30％的紫外线辐射下接枝60分钟的黄麻纱线显示出最高的聚合物负载（PL）值为22％，拉伸强度（TS）值为195％，断裂伸长率（Eb）值为256％到未经处理的黄麻纱。为了进一步改善黄麻纱的性能，在AA（30％）溶液中使用了许多添加剂（1％），例如尿素，聚乙烯吡咯烷酮，氨基甲酸酯丙烯酸酯和氨基甲酸酯二丙烯酸酯。在所有使用的添加剂中，尿素显着影响了经处理的黄麻纱的PL（27％），TS（230％）和Eb（264％）值。还研究了模拟风化和在土壤（25％水）中引起的水分吸收以及经处理和未经处理的黄麻纱的降解性能。接枝样品的降解速率低于未处理样品的降解速率。 DSC研究表明，AA加尿素接枝样品的热稳定性。

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