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首页> 美国卫生研究院文献>Polymers >Preparation and Characteristics of Wet-Spun Filament Made of Cellulose Nanofibrils with Different Chemical Compositions
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Preparation and Characteristics of Wet-Spun Filament Made of Cellulose Nanofibrils with Different Chemical Compositions

机译：不同化学组成的纤维素纳米原纤维制备的湿纺丝及其特性

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In this study, wet-spun filaments were prepared using lignocellulose nanofibril (LCNF), with 6.0% and 13.0% of hemicellulose and lignin, respectively, holocellulose nanofibril (HCNF), with 37% hemicellulose, and nearly purified-cellulose nanofibril (NP-CNF) through wet-disk milling followed by high-pressure homogenization. The diameter was observed to increase in the order of NP-CNF ≤ HCNF < LCNF. The removal of lignin improved the defibrillation efficiency, thus increasing the specific surface area and filtration time. All samples showed the typical X-ray diffraction pattern of cellulose I. The orientation of CNFs in the wet-spun filaments was observed to increase at a low concentration of CNF suspensions and high spinning rate. The increase in the CNF orientation improved the tensile strength and elastic modulus of the wet-spun filaments. The tensile strength of the wet-spun filaments decreased in the order of HCNF > NP-CNF > LCNF.
机译：在这项研究中，湿纺长丝分别使用木质纤维素纳米原纤维（LCNF），半纤维素和木质素分别为6.0％和13.0％，全纤维素纳米原纤维（HCNF），37％半纤维素和近乎纯净的纤维素纳米原纤维（NP- CNF）通过湿盘研磨，然后进行高压均质处理。观察到直径以NP-CNF≤HCNF NP-CNF> LCNF的顺序降低。

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