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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Cross-Linked Cellulose Membranes with Robust Mechanical Property, Self-Adaptive Breathability, and Excellent Biocompatibility
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Cross-Linked Cellulose Membranes with Robust Mechanical Property, Self-Adaptive Breathability, and Excellent Biocompatibility

机译：具有稳健的机械性能，自适应透气性和优异的生物相容性的交联纤维素膜

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摘要

High-performance breathable bio-based membranes have attracted considerable attention worldwide due to the limited fossil energy resources and the demand for sustainable development. As the most abundant polysaccharide, cellulose is an almost inexhaustible raw material with hydrophilicity, biocompatibility, biodegradability, chemical modifying capacity, etc. that has demonstrated versatile applications. Herein, cellulose membranes (CEMs) with mechanically strong property, self-adaptive breathability, and excellent biocompatibility were fabricated by a green technology. The obtained CEMs exhibited an increased integrated mechanical property with the broken strength and broken elongation improved from 54.2 to 137.4 MPa and from 4.7 to 18.3%, respectively. Moreover, the obtained cellulose membranes exhibited a self-adaptive breathability with varying temperature and relative humidity (RH), and the water vapor transmission rate (WVTR) of CEMs was much better than that of some famous commercial products, such as 3M-Nexcare. Besides that, cytotoxicity testing results revealed that CEMs were noncytotoxic, with cell viability reaching up to 97%, showing an excellent biocompatibility. Simultaneously, compared to the pristine cellulose membrane, the transmittance and water repellency of cross-linked membranes have been improved to some degree. It is believed that the achieved membranes are effective and scalable products for meritorious applications in medical bandages, wound healing, smart apparels, building materials, and so forth.
机译：由于化石能源资源有限和可持续发展的需求，高性能透气的生物基膜引起了全世界的显着关注。作为最丰富的多糖，纤维素是一种具有亲水性，生物相容性，生物降解性，化学改性能力等的几乎取之不尽的原料。这里，通过绿色技术制造具有机械强度，自适应透气性和优异的生物相容性的纤维素膜（CEMS）。所获得的CEMS具有较高的综合力学性能，断裂强度和断裂伸长率分别从54.2至137.4MPa改善和4.7％至18.3％。此外，所获得的纤维素膜具有不同温度和相对湿度（RH）的自适应透气性，CEM的水蒸气透射率（WVTR）远优于一些着名的商业产品，例如3M-Nexcare。除此之外，细胞毒性测试结果表明，CEM是非胞间毒性，细胞活力达到高达97％，显示出优异的生物相容性。同时，与原始纤维素膜相比，交联膜的透射率和防水性已经改善到某种程度上。据信，达到的膜是医用绷带，伤口愈合，智能服装，建筑材料等的可令人用品可有效和可扩展的产品。

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