Castor oil and its glyceride-based polyurethane flexible and rigid foam with vanillin for antibacterial material

IF 5.6 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Industrial Crops and Products Pub Date : 2025-06-04 DOI:10.1016/j.indcrop.2025.121275

Yao-Chi Wu , Yi-Chun Chen

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Abstract

Castor oil glyceride (COG) was synthesized via transesterification of castor oil with glycerol. Polyurethane (PU) foams were subsequently prepared by reacting castor oil or COG as the polyol component with 1,6-hexamethylene diisocyanate trimer biuret (HDB). Vanillin was incorporated in quantities equivalent corresponding to 10 % or 20 % of the total hydroxyl groups of the polyol. The effects of COG and vanillin as raw materials on the properties of PU foams were investigated. The successful synthesis of COG was confirmed, exhibiting a hydroxyl value of 339.1 mg KOH/g, a weight average molecular weight (Mw) of 860 g/mol, and a polydispersity index (PDI) of 1.3 g/mol. Compared to castor oil-based PU foams, COG-based foams exhibited a shorter reaction time, along with significantly higher compressive strength and thermal stability. Increasing the vanillin content led to a decrease in both foam density and compressive strength. The weight retention of solvents exhibited an efficiency above 95 %. The incorporation of vanillin demonstrated a slight enhancement in the thermal properties of castor oil-based foams. Notably, the incorporation of vanillin and castor oil improves the antibacterial activity of the bio-based PU foams. Vanillin addition contributed to the enhancement of the thermal and antibacterial properties of castor oil-derived PU foams.

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蓖麻油及其甘油酯基聚氨酯柔性和刚性泡沫与香兰素为抗菌材料

以蓖麻油和甘油为原料，通过酯交换反应合成了蓖麻油甘油酯。以蓖麻油或蓖麻油为多元醇组分，与1,6-六亚甲基二异氰酸酯三聚二脲（HDB）反应制备聚氨酯（PU）泡沫。香兰素的掺入量相当于多元醇总羟基的10% %或20% %。研究了COG和香兰素对聚氨酯泡沫塑料性能的影响。成功合成了COG，其羟基值为339.1 mg KOH/g，重量平均分子量（Mw）为860 g/mol，多分散指数（PDI）为1.3 g/mol。与基于蓖麻油的PU泡沫相比，基于cog的泡沫具有更短的反应时间，以及更高的抗压强度和热稳定性。香兰素含量的增加导致泡沫密度和抗压强度的降低。溶剂的保重率可达95% %以上。加入香兰素后，蓖麻油基泡沫的热性能略有提高。值得注意的是，香草醛和蓖麻油的掺入提高了生物基PU泡沫的抗菌活性。添加香兰素有助于增强蓖麻油衍生聚氨酯泡沫的热性能和抗菌性能。

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来源期刊

Industrial Crops and Products 农林科学-农业工程

CiteScore

9.50

自引率

8.50%

发文量

1518

审稿时长

43 days

期刊介绍： Industrial Crops and Products is an International Journal publishing academic and industrial research on industrial (defined as non-food/non-feed) crops and products. Papers concern both crop-oriented and bio-based materials from crops-oriented research, and should be of interest to an international audience, hypothesis driven, and where comparisons are made statistics performed.