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热塑性纤维素基复合材料用于增材制造。

Thermoplastic Cellulose-Based Compound for Additive Manufacturing.

机构信息

VTT Technical Research Centre of Finland Ltd., Tietotie 4E, P.O. Box 1000, FI-02044 VTT, FI-02150 Espoo, Finland.

出版信息

Molecules. 2021 Mar 18;26(6):1701. doi: 10.3390/molecules26061701.

DOI:10.3390/molecules26061701
PMID:33803734
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8003161/
Abstract

The increasing environmental awareness is driving towards novel sustainable high-performance materials applicable for future manufacturing technologies like additive manufacturing (AM). Cellulose is abundantly available renewable and sustainable raw material. This work focused on studying the properties of thermoplastic cellulose-based composites and their properties using injection molding and 3D printing of granules. The aim was to maximize the cellulose content in composites. Different compounds were prepared using cellulose acetate propionate (CAP) and commercial cellulose acetate propionate with plasticizer (CP) as polymer matrices, microcellulose (mc) and novel cellulose-ester additives; cellulose octanoate (C8) and cellulose palmitate (C16). The performance of compounds was compared to a commercial poly(lactic acid)-based cellulose fiber containing composite. As a result, CP-based compounds had tensile and Charpy impact strength properties comparable to commercial reference, but lower modulus. CP-compounds showed glass transition temperature (Tg) over 58% and heat distortion temperature (HDT) 12% higher compared to reference. CAP with C16 had HDT 82.1 °C. All the compounds were 3D printable using granular printing, but CAP compounds had challenges with printed layer adhesion. This study shows the potential to tailor thermoplastic cellulose-based composite materials, although more research is needed before obtaining all-cellulose 3D printable composite material with high-performance.

摘要

日益增强的环境意识促使人们寻求新型可持续的高性能材料，以应用于未来的制造技术，如增材制造（AM）。纤维素是一种丰富的可再生和可持续的原料。这项工作专注于研究热塑性纤维素基复合材料的性能及其使用颗粒注塑和 3D 打印的性能。目的是使复合材料中的纤维素含量最大化。使用不同的化合物，包括纤维素醋酸丙酸酯（CAP）和具有增塑剂的商业纤维素醋酸丙酸酯（CP）作为聚合物基体，微纤维素（mc）和新型纤维素酯添加剂；辛酸纤维素（C8）和棕榈酸纤维素（C16）。将化合物的性能与含有纤维素纤维的商业聚乳酸基复合材料进行了比较。结果表明，CP 基化合物具有与商业参考材料相当的拉伸和夏比冲击强度性能，但模量较低。CP 化合物的玻璃化转变温度（Tg）比参考值高 58%，热变形温度（HDT）高 12%。与参考值相比，C16 与 CAP 的 HDT 为 82.1°C。所有的化合物都可以使用颗粒打印进行 3D 打印，但 CAP 化合物在打印层附着力方面存在挑战。这项研究表明，有可能对热塑性纤维素基复合材料进行定制，尽管在获得具有高性能的全纤维素 3D 可打印复合材料之前，还需要进行更多的研究。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/5a350edb5383/molecules-26-01701-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/5bbb7e469c82/molecules-26-01701-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/6ee4eb3337b8/molecules-26-01701-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/b52146c35510/molecules-26-01701-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/40a55e32a204/molecules-26-01701-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/c628469f6a8a/molecules-26-01701-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/22a27f2d79d3/molecules-26-01701-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/df4a911528a9/molecules-26-01701-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/ab3613971389/molecules-26-01701-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/dc51c725d7fc/molecules-26-01701-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/5a350edb5383/molecules-26-01701-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/5bbb7e469c82/molecules-26-01701-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/6ee4eb3337b8/molecules-26-01701-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/b52146c35510/molecules-26-01701-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/40a55e32a204/molecules-26-01701-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/c628469f6a8a/molecules-26-01701-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/22a27f2d79d3/molecules-26-01701-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/df4a911528a9/molecules-26-01701-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/ab3613971389/molecules-26-01701-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/dc51c725d7fc/molecules-26-01701-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d508/8003161/5a350edb5383/molecules-26-01701-g010.jpg

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