苯酚
木质素
甲醛
酚醛树脂
生物高聚物
化学
酚类
傅里叶变换红外光谱
有机化学
多酚
核化学
化学工程
材料科学
聚合物
工程类
抗氧化剂
作者
Kah Yen Lim,Tengku Arisyah Tengku Yasim‐Anuar,Nur Sharmila Sharip,Farhana Aziz Ujang,Hazwani Husin,Hidayah Ariffin,Paridah Md. Tahir,Xinping Li,Seng Hua Lee,Mohd Termizi Yusof
出处
期刊:Polymers
[MDPI AG]
日期:2023-03-01
卷期号:15 (5): 1258-1258
被引量:1
标识
DOI:10.3390/polym15051258
摘要
Lignin is a natural biopolymer with a complex three-dimensional network and it is rich in phenol, making it a good candidate for the production of bio-based polyphenol material. This study attempts to characterize the properties of green phenol-formaldehyde (PF) resins produced through phenol substitution by the phenolated lignin (PL) and bio-oil (BO), extracted from oil palm empty fruit bunch black liquor. Mixtures of PF with varied substitution rates of PL and BO were prepared by heating a mixture of phenol–phenol substitute with 30 wt.% NaOH and 80% formaldehyde solution at 94 °C for 15 min. After that, the temperature was reduced to 80 °C before the remaining 20% formaldehyde solution was added. The reaction was carried out by heating the mixture to 94 °C once more, holding it for 25 min, and then rapidly lowering the temperature to 60 °C, to produce the PL−PF or BO−PF resins. The modified resins were then tested for pH, viscosity, solid content, FTIR, and TGA. Results revealed that the substitution of 5% PL into PF resins is enough to improve its physical properties. The PL−PF resin production process was also deemed environmentally beneficial, as it met 7 of the 8 Green Chemistry Principle evaluation criteria.
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