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首页> 外文期刊>Journal of Applied Polymer Science >A comparative study of the stress-relaxation behavior of untreated and alkali-treated jute fibers
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A comparative study of the stress-relaxation behavior of untreated and alkali-treated jute fibers

机译：未经处理和经碱处理的黄麻纤维的应力松弛行为的比较研究

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摘要

In this study, we examined the effect of alkali treatment and its variables, namely, the time (2, 4, 6, or 8 h) and the concentration of alkali (1, 5, or 17.5% w/w), on the linear density, strength, and stress-relaxation properties of jute fiber. It was demonstrated that this kind of treatment led to the creation of several voids and fiber fibrillation. Properties were measured for the alkali-treated and dewaxed fibers. The linear density and tenacity of the fibers were reduced at higher alkali concentration and at longer dipping times. The strength increased with treatment with mild alkali and decreased with treatment with the strong alkali. A very low alkali treatment (1%) rendered low relaxation. At a 5% alkali concentration, interfibrillar matrix softening also played an important role and was prominent in the stress-relaxation behavior. The stress-relaxation value was much higher in the fibers treated with 17.5% NaOH compared to the dewaxed fibers; this was probably due to a loss in the fibrillar arrangement.
机译：在这项研究中，我们研究了碱处理的影响及其变量，即时间（2、4、6或8 h）和碱浓度（1、5、5或17.5％w / w）对碱处理的影响。黄麻纤维的线密度，强度和应力松弛特性。事实证明，这种处理导致形成多个空隙和纤维原纤化。测量了碱处理和脱蜡纤维的性能。在较高的碱浓度和较长的浸渍时间下，纤维的线密度和强度降低。强度随着弱碱的处理而增加，而随着强碱的处理而降低。极低的碱处理（1％）导致松弛度低。在碱浓度为5％时，原纤维间基质软化也起着重要作用，并且在应力松弛行为中也很突出。与脱蜡的纤维相比，用17.5％NaOH处理的纤维的应力松弛值高得多。这可能是由于原纤维排列的损失。

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