An Analysis of Capillary Water Behavior in Poly-p-Phenylenebenzobisoxazole Fiber

Tooru Kitagawa; Kazuyuki Yabuki

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An Analysis of Capillary Water Behavior in Poly-p-Phenylenebenzobisoxazole Fiber

机译：聚对苯撑苯并双恶唑纤维的毛细水行为分析

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This study concerns with analysis of water inside a poly-p-phenylenebenzobisoxazole (PBO) fiber. It is important to analyze the state of wate rattached to polymer, because it may affect properties of fibers as the increase of drying speed of water from the fiber. To carry out such observation, differnetial scanning calorimetry and nuclear magnetic resonance spectroscopy were applied. They reveal the large freezing point depression and the state of water inside wet PBO fiber. It shows extraordinary low crystallization temperautre. The reason may be that the water is packed into capillary voids whose diameter is around 2-3 nm. Proton NMR analysis also suggests the above result.

机译：这项研究涉及分析聚对苯撑苯并双恶唑（PBO）纤维内部的水。分析水附着在聚合物上的状态非常重要，因为随着水从纤维中的干燥速度的增加，它可能会影响纤维的性能。为了进行这种观察，应用了差示扫描量热法和核磁共振波谱法。它们揭示了大的凝固点降低和湿的PBO纤维内部的水状态。它显示出异常低的结晶温度。原因可能是水被填充到直径约2-3 nm的毛细孔中。质子NMR分析也表明上述结果。

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《Journal of Applied Polymer Science》 |2001年第7期|共7页
作者
Tooru Kitagawa; Kazuyuki Yabuki;
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正文语种 eng
中图分类高分子化学（高聚物）;高分子化合物产品;有机化学;
关键词
poly-p-phenylenebenzobisoxazole fiber; capillary water; differential scanning calorimetry; nuclear magnetic resonance; small angle X-ray scattering;

机译：聚对苯撑苯并二恶唑纤维毛细管水差示扫描量热核磁共振小角X射线散射;

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1. An Analysis of Capillary Water Behavior in Poly-p-Phenylenebenzobisoxazole Fiber [J] . Tooru Kitagawa, Kazuyuki Yabuki Journal of Applied Polymer Science . 2001,第7期

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6. Friction and Wear Behavior of Polyimide Composites Reinforced by Surface-Modified Poly-p-Phenylenebenzobisoxazole (PBO) Fibers in High Ambient Temperatures [O] . Liang Yu, Yuanjie Zhang, Jiaming Tang, 2019

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7. ABSTRACTudThe purpose of this research is to obtain an optimal formulations of Black mulberry leaves dried noodle product by using Design Expert Application with Design Mixture D-optimal method.udThis research was done with two phases. The preliminary procedures research is to determine levels of antioxidant activity, chlorophyll content, and the levels of tannin that was contained in black mulberry leaves, the black mulberry leaf flour, a pare fruits, and pare flour. Primary research is to determine the best formulation by using a Mixture Design Expert Design D-optimal method, for a purpose is to optimized the Black mulberry leaf dry noodle. Responses in this studies are a chemical analysis response by using a crude fiber analysis and protein analysis. Physical response is water absorption. Sensory response are color, flavor, and odor.udBlack mulberry leaves dried noodles was made from wheat flour, black mulberry leaf flour, and pare flour, other materials such as an eggs, water, salt, and sodium bicarbonate, of the 16 formulations that has offered to produce an optimal formulation based on desirability which contains 39.69 Flour,14.25 Black Mulberry Leaves flour, 3.06 Pare fruit and flour amounted, and other materials are 30 water, 10 eggs, 2 salt, and 1 sodium bicarbonate. The formulation has been result by program 11,05 crude fiber content, 12.93 protein, 274.31 water absorption, 4,31 for color attribute, 3,87 for taste attribute, and 3,71 for aroma attribute.ududKeyword: Black mulberry leaf dried noodles, optimization. [O] . Leti Nurlatifah Alumni, Yudi Garnida DS, Tantan Widiantara DS 2017

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An Analysis of Capillary Water Behavior in Poly-p-Phenylenebenzobisoxazole Fiber

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