Strong and Stiff: High-Performance Cellulose Nanocrystal/Poly(vinyl alcohol) Composite Fibers
Strong and Stiff: High-Performance Cellulose Nanocrystal/Poly(vinyl alcohol) Composite Fibers
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高性能纤维素纳米晶/聚乙烯醇复合纤维
DOI：
10.1021/acsami.6b11578
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发表时间：
2016-11-23
影响因子：
9.5
通讯作者：
Shaffer, Milo S. P.
中科院分区：
文献类型：
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作者：
Lee, Won Jun;Clancy, Adam J.;Shaffer, Milo S. P.
棒状纤维素纳米晶体（CNCs）的力学性能表明其在（纳米）复合材料中作为生物衍生增强体具有很大的潜力。聚（乙烯醇）（PVOH）是一种有用的工业材料，与CNC化学非常兼容。采用同轴凝聚纺丝工艺，经热拉伸制备了高性能CNC/PVOH复合纤维。我们发现，CNC增加了PVOH的排列和结晶度，并提供了直接的增强，从而提高了纤维的强度和刚度。在40wt%CNC负载下，强度和刚度达到880 MPa和29.9GPa，超过了先前报道的大多数其他纳米纤维素基复合纤维的性能。
The mechanical properties of rodlike cellulose nanocrystals (CNCs) suggest great potential as bioderived reinforcement in (nano)composites. Poly(vinyl alcohol) (PVOH) is a useful industrial material and very compatible with CNC chemistry. High performance CNC/PVOH composite fibers were produced coaxial coagulation spinning, followed by hot-drawing. We showed that CNCs increase the alignment and crystallinity of PVOH, as well as providing direct reinforcement, leading to enhanced fiber strength and stiffness. At 40 wt % CNC loading, the strength and stiffness reached 880 MPa and 29.9 GPa, exceeding the properties of most other nanocellulose based composite fibers previously reported.