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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of cellulose carbamate membrane with high strength and transparency
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Preparation and characterization of cellulose carbamate membrane with high strength and transparency

机译：高强度和透明度纤维素氨基甲酸酯膜的制备与表征

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摘要

In this study, cellulose carbamate was synthesized from alkali cellulose and urea by a low-cost solid-liquid phase method. Cellulose carbamate was dissolved in cuprammonium solution to form a regenerated cellulose membrane with high strength and high transparency. The mass fraction of cellulose dissolved was greatly increased (up to 17%), and the thermal stability of cellulose was retained. The surface of the membrane is compact and there are regular microchannels in it. The factors influencing the transparency and mechanical properties of regenerated cellulose membrane were discussed by the range analysis of orthogonal experiment. The light transmittance is 95.50%, the breaking strength is 98.35 MPa, the elongation at break is 21.74%. The ability of heat preservation and moisture preservation of regenerated cellulose membrane was tested, and the effect was close to that of conventional polyethylene membrane. The membrane material has broad application prospects in packaging, food preservation, agriculture, and other fields.
机译：本研究以碱性纤维素和尿素为原料，采用低成本的固液相法合成了纤维素氨基甲酸酯。将氨基甲酸纤维素溶解在铜铵溶液中，形成高强度、高透明度的再生纤维素膜。溶解纤维素的质量分数大大增加（高达17%），并保留了纤维素的热稳定性。膜表面致密，内部有规则的微通道。通过正交试验极差分析，探讨了影响再生纤维素膜透明度和力学性能的因素。透光率为95.50%，断裂强度为98.35mpa，断裂伸长率为21.74%。测试了再生纤维素膜的保温、保湿性能，其效果与传统聚乙烯膜相近。该膜材料在包装、食品保鲜、农业等领域具有广阔的应用前景。

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