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Structural Features Of Glycol And Acrylamide Treated Jute Fiber

机译:乙二醇和丙烯酰胺处理的黄麻纤维的结构特征

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by both NaIO_4 and K-2S_2O_8 causes some damage in the fiber surface structure, reduction in crystallinity percentage and show less thermal stability with generation of more -CHO groups in oxy-jute state; the treatment being relatively milder for K_2S_2O_8 pretreatment than NaIO_4 pretreatment. However, when K_2S_2O_8 pretreated oxy-jute is further treated with either 8% dosage of acrylamide or ethylene glycol or polyethylene glycol or 1:1 mixture of acrylamide and polyethylene glycol-1500, it renders measurable improvement in surface appearance and morphology of jute fibers, somewhat increased crystallinity in fine structure, less thermal stability for poly-acrylamide grafted jute, and higher thermal stability for ethylene glycol modified jute. However, the treatment of K_2S_2O_8 pretreated oxy-jute with 1:1 mixture of 4% acrylamide and 4% PEG-1500 renders a balanced improvement in all these structural features of jute fiber.
机译:NaIO_4和K-2S_2O_8共同作用会导致纤维表面结构受损,结晶度降低,并且在氧黄麻状态下生成更多的-CHO基团时,热稳定性降低; K_2S_2O_8预处理比NaIO_4预处理相对温和。但是,当用8%剂量的丙烯酰胺或乙二醇或聚乙二醇或丙烯酰胺与聚乙二醇1500的1:1混合物进一步处理K_2S_2O_8预处理的黄麻时,黄麻纤维的表面外观和形态可测得改善,细微结构的结晶度有所提高,聚丙烯酰胺接枝黄麻的热稳定性较低,乙二醇改性黄麻的热稳定性较高。但是,用4%的丙烯酰胺和4%的PEG-1500的1:1混合物处理K_2S_2O_8预处理的氧黄麻可以使黄麻纤维的所有这些结构特征得到均衡的改善。

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