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首页> 外文期刊>Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides >Properties of rosin-based waterborne polyurethanes/cellulose nanocrystals composites
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Properties of rosin-based waterborne polyurethanes/cellulose nanocrystals composites

机译：松香基水性聚氨酯/纤维素纳米晶体复合材料的性能

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摘要

Polymers from renewable biomass are viable supplements for synthetic polymers. In this study, cellulose nanocrystals (CNs) were used as nanofillers to improve properties of rosin-based waterborne polyurethanes (RWPU). The morphology, structure, thermal, and mechanical properties of the RWPU/CNs nanocomposites were investigated. It demonstrated that CNs were compatible with RWPU and dispersed homogeneously in the polymer matrix. CNs as nanofillers improved tensile strength of RWPU significantly. Tensile strength of RWPU/CNs composite films increased from 28.2 to 52.3 MPa with increasing CNs amount from 0 to 20 wt%. Moreover, the thermal stability of RWPU was also improved by CNs and the glass transition temperature of RWPU/CNs decreased comparing with RWPU. This work provided a novel oathwav for nrenaration of biomass-based WPU with excellent properties from cellulose and rosin.
机译：来自可再生生物质的聚合物是合成聚合物的可行补充。在这项研究中，纤维素纳米晶体（CNs）被用作纳米填料，以改善松香基水性聚氨酯（RWPU）的性能。研究了RWPU / CNs纳米复合材料的形貌，结构，热学和力学性能。结果表明，CNs与RWPU相容，并均匀地分散在聚合物基质中。 CNs作为纳米填料可显着提高RWPU的拉伸强度。 RWPU / CNs复合膜的拉伸强度从28.2 MPa增加到52.3 MPa，CNs含量从0到20 wt％逐渐增加。此外，CNs也提高了RWPU的热稳定性，与RWPU相比，RWPU / CNs的玻璃化转变温度降低了。这项工作为纤维素和松香的优异性能提供了一种新颖的誓言，用于生物质基WPU的烯醇化。

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