Biocompatible and biodegradable super-toughness regenerated cellulose via water molecule-assisted molding
Biocompatible and biodegradable super-toughness regenerated cellulose via water molecule-assisted molding
复制标题
通过水分子辅助成型的生物相容性和可生物降解的超韧性再生纤维素
DOI：
10.1016/j.cej.2021.129229
复制
发表时间：
2021-03-19
影响因子：
15.1
通讯作者：
Cai, Jie
中科院分区：
文献类型：
--
作者：
Hu, Lei;Zhong, Yi;Cai, Jie
大多数常用塑料都来自石化产品，会产生严重的环境问题。开发具有优异机械性能、高热稳定性和化学稳定性、优异生物相容性、良好加工性和可重塑能力的经济高效的生物基和生物可降解材料仍然是一个挑战。在此，我们报告了一种双交联策略，结合平面热压和水分子辅助成型工艺，来制造3D结构的双交联再生纤维素（DCRC）。化学和物理交联域的结合以及压力诱导的取向分布显着提高了 DCRC 的韧性。此外，纤维素链之间的可逆氢键相互作用可以通过水分子简单地调节，使得DCRC具有三维可塑性。本研究中使用的新策略将有助于制备具有优异机械性能、良好成型性以及优异生物相容性和生物降解性的再生纤维素材料，作为石化塑料的替代品，用于开发可持续材料。
Most of the commonly used plastics are derived from petrochemicals and produce severe environmental problems. The development of cost-effective bio-based and biodegradable materials with excellent mechanical properties, high thermal and chemical stability, excellent biocompatibility, good processability, and ability to be reshaped remains a challenge. Herein, we report a double cross-linking strategy, combining plane hot-pressing and water molecule-assisted molding processes, to fabricate 3D structured double-cross-linked regenerated cellulose (DCRC). The incorporation of chemical and physical crosslinking domains and the pressure-induced orientation distribution remarkably improved the toughness of the DCRCs. Moreover, the reversible hydrogen bond interaction between cellulose chains could be simply regulated by water molecule, making the DCRCs capable of three-dimensional mouldability. The novel strategy used in this study will be helpful in preparing regenerated cellulose materials with excellent mechanical properties, good moldability and excellent biocompatibility and biodegradability as alternatives to petrochemical plastics for the development of sustainable materials.