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首页> 外文会议>Fourth International Nonwood Fibre Pulping and Papermaking Conference (4th INWFPPC) (Secondary Fibre Processing Inclusive) Vol.1 Sep 18-21, 2000 Jinan, China >THE RESPONSE OF KENAF WOODY CORE TO CHEMIMECHANICAL TREATMENTS: 1. THE EFFECT OF WATER AND ALKALI SOAKING ON FIBER SWELLING AND YIELD
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THE RESPONSE OF KENAF WOODY CORE TO CHEMIMECHANICAL TREATMENTS: 1. THE EFFECT OF WATER AND ALKALI SOAKING ON FIBER SWELLING AND YIELD

机译：洋红木心对化学机械处理的反应：1.水和碱浸对纤维溶胀和产量的影响

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摘要

Woody core makes up 55-65 % of the weight of whole-stalk kenaf. This core has shorter fiber length and higher lignin content than the bast portion, so it responds much differently to chemical and mechanical pulping treatments. The purpose of this work was to characterize the response of core to typical chemimechanical treatments, in order to optimize the quality of high-yield pulps from whole-stalk kenaf. Core samples were subjected to soaking in water and alkaline solutions for various times. NaOH concentration, temperature, and time were varied. After soaking, the degree of fiber swelling was estimated using water retention value. Yield was also measured. For soaking in water, kenaf core was able to pick up three times its weight in water within thirty minutes, and the pickup increased to approximately six times over the next four days. Pickup, WRV, swelling and yield loss were all higher when the water temperature was increased. For soaking in alkaline solutions, alkali concentration had a strong negative effect and temperature had a moderately positive effect on swelling. All three variables had a significant negative effect on yield. Yield and WRV were found to be related in a negative linear manner.
机译：木本芯占全茎洋麻重量的55-65％。该核心的纤维长度比韧皮部分短，木质素含量更高，因此其对化学和机械制浆处理的反应大不相同。这项工作的目的是表征核对典型化学机械处理的响应，以优化全茎洋麻的高产纸浆质量。将岩心样品浸泡在水和碱性溶液中不同时间。 NaOH的浓度，温度和时间各不相同。浸泡后，使用保水值估算纤维的溶胀度。还测量了产率。为了浸泡在水中，洋麻芯能够在三十分钟内将重量增加三倍，而在接下来的四天内，吸收量增加到大约六倍。当水温升高时，皮重，WRV，溶胀和产量损失都更高。对于浸泡在碱性溶液中，碱浓度有很强的负面影响，而温度对溶胀有中等程度的正面影响。所有这三个变量对产量都有明显的负面影响。发现产量和WRV呈负线性关系。

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