纳米纤维素
琥珀酸酐
材料科学
保温
降噪系数
多孔性
复合材料
溶剂
吸收(声学)
环境友好型
热稳定性
化学工程
有机化学
化学
纤维素
工程类
图层(电子)
生态学
生物
作者
. Dinesh,Bijender Kumar,Duc Hoa Pham,Jaehwan Kim
标识
DOI:10.1016/j.carbpol.2024.122016
摘要
This paper reports an environment-friendly biobased foam made with cellulose nanofiber (CNF) and a biobased hyperbranched crosslinker, glycerol succinic anhydride (GSA). As a biobased hyperbranched crosslinker, carboxyl-terminated GSA is synthesized through a straightforward esterification process involving glycerol and succinic anhydride. The GSA-crosslinked CNF (GSA/CNF) foam is prepared using a facile, sustainable, cost-effective, and efficient solvent-exchange method. The resulting foam exhibits notable characteristics, including improved dimensional stability, remarkably low density (13.41 mg/cm3) with high porosity (>99 %), and exceptional compressive strength (494 kPa) and modulus (452 kPa). Further, the foam offers outstanding sound absorption capabilities with a coefficient of 0.986 at 2 kHz and remarkably low thermal conductivity (30.18 mW/mK), significantly lower than commonly used and reported porous materials, indicating its potential as an efficient, environmentally friendly sound absorption and thermal insulation material.
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