Van Nguyen Thi Thuy, Yang Goh Xue, Phan Anh N, Nguyen Tri, Ho Thanh Gia-Thien, Nguyen Son Truong, Ky Phuong Ha Huynh
Institute of Chemical Technology, Vietnam Academy of Science and Technology No.1A, TL29 Str., Thanh Loc Ward, Dist. 12 Ho Chi Minh City Vietnam.
NUS Mechanical Engineering 2 Engineering Drive 3 Singapore.
RSC Adv. 2022 Jul 1;12(30):19225-19231. doi: 10.1039/d2ra02944h. eCollection 2022 Jun 29.
Aerogel cellulose materials were synthesised from and different crosslinkers, such as kymene and a mixture of polyvinyl alcohol (PVA) and glutaraldehyde (GA). The effects of using a magnetic stirrer and ultrasonic methods were investigated. The results show that materials prepared using ultrasonic methods have higher porosity and lower density. The thermal conductivity of the synthesised aerogel cellulose could be as low as 0.0281 W m K, showing the good heat insulation performance of this material. Absorption capacity was tested using diesel oil (DO), and the highest capacities of 58.82 and 52.03 g g of DO were found with kymene and PVA + GA as crosslinkers, respectively. The reusability of the materials was tested. After 10 cycles, the DO absorption capacity was 62.8% of the value of the first cycle for the aerogel cellulose sample with kymene as the crosslinker and 72.7% for the sample with PVA + GA as the crosslinking agent.
气凝胶纤维素材料由[具体原料]和不同的交联剂合成，如间苯二酚甲醛树脂以及聚乙烯醇（PVA）和戊二醛（GA）的混合物。研究了使用磁力搅拌器和超声方法的效果。结果表明，采用超声方法制备的材料具有更高的孔隙率和更低的密度。合成的气凝胶纤维素的热导率可低至0.0281 W m⁻¹ K⁻¹，表明该材料具有良好的隔热性能。使用柴油（DO）测试了吸收能力，以间苯二酚甲醛树脂和PVA + GA作为交联剂时，发现最高吸收量分别为58.82和52.03 g g⁻¹ DO。测试了材料的可重复使用性。经过10个循环后，以间苯二酚甲醛树脂作为交联剂的气凝胶纤维素样品的DO吸收能力为第一个循环值的62.8%，以PVA + GA作为交联剂的样品为72.7%。
