纳米木质素作为成核剂促进等规聚丙烯结晶

IF 1.9 Q2 CRYSTALLOGRAPHY

Polymer Crystallization Pub Date : 2023-03-23 DOI:10.1155/2023/7454857

Jing Chen, Tao Yang, Yongchun Zhu, Zhenyang Luo, Xiaofeng Ma

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引用次数: 0

摘要

木质素是第二丰富的无污染生物质材料。然而，目前木质素大多被作为废物丢弃在河里或作为燃料燃烧，这导致了严重的环境污染问题和木质素利用效率低下。因此，木质素的高价值利用已成为研究的热点。本文采用自组装方法成功制备了纳米木质素（nano-Lig），然后采用溶液共混法将纳米Lig与全同立构聚丙烯（iPP）混合制备了一系列纳米Lig/iPP复合材料。纳米Lig不仅提高了iPP的热稳定性，而且改善了iPP结晶性能。当在iPP中加入1.0wt%的纳米Lig时，iPP的结晶度比iPP提高了6.39%。通过对非等温结晶动力学的研究表明，纳米Lig可以提高iPP的结晶速率，表明纳米Lig可作为iPP的成核剂。

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Nanolignin as Nucleating Agents Promoting Crystallization of Isotactic Polypropylene

Lignin is the second most abundant pollution-free biomass material. However, most of lignin is discarded as waste in river or burned as fuel, which results in serious environmental pollution problems and low utilization efficiency of lignin at present. Thus, high-value utilization of lignin has become a hot research field. Herein, nanolignin (nano-Lig) is prepared successfully by the self-assembly method, and then nano-Lig and isotactic polypropylene (iPP) are mixed to prepare a series of nano-Lig/iPP composites by the solution blending method. Nano-Lig not only enhance thermostability of iPP but also improve crystallization properties of iPP. When 1.0 wt% nano-Lig was added in iPP, the crystallinity of iPP increased by 6.39% compared to iPP. Nano-Lig can increase the crystallization rate of iPP through investigation of kinetics of nonisothermal crystallization, suggesting nano-Lig can be used as a nucleating agent for iPP.

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来源期刊

Polymer Crystallization Materials Science-Materials Science (miscellaneous)

CiteScore

4.70

自引率

0.00%

发文量