Study of castor oil-based auxetic polyurethane foams for cushioning applications,Polymer International

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Study of castor oil-based auxetic polyurethane foams for cushioning applications
Polymer International ( IF 2.9 ) Pub Date : 2021-05-21 , DOI: 10.1002/pi.6259
V Chaithanya Vinay _{1,

2} , D S Mohan Varma _{1,

2} , Mohammed Rehaan Chandan ₃ , Ponsubha Sivabalan ₂ , Amit Kumar Jaiswal ₂ , Sai Swetha ₃ , Alina Sionkowska ₄ , Beata Kaczmarek ₄

Affiliation

This work involves the study of mechanical and antibacterial properties of auxetic polyurethane (APU) foams synthesized using castor oil (CO) to ascertain their suitability as seat cushions in wheelchairs. Firstly, CO-based PU foams (PU-CO) were synthesized by substituting 25% synthetic polyol with CO in a polyol blend. Conventional PU foams and PU-CO foams were then converted to auxetic foams using triaxial compression and heating. The chemical composition, microstructure and thermal, mechanical and antibacterial properties of the foams were analyzed. It was found that addition of CO improved the antibacterial and mechanical properties of the foams. CO-based APU (CO-APU) foams showed highest compression strength and storage modulus. An increase in thermal stability of PU-CO was also observed as compared to PU foams. These CO-APU foams could be a better alternative to conventional PU foams for wheelchair seat cushions and in hospital bed applications. © 2021 Society of Industrial Chemistry.

中文翻译：

用于缓冲应用的蓖麻油基拉胀聚氨酯泡沫的研究

这项工作涉及研究使用蓖麻油 (CO) 合成的拉胀聚氨酯 (APU) 泡沫的机械和抗菌性能，以确定它们作为轮椅座垫的适用性。首先，通过用多元醇混合物中的 CO 取代 25% 的合成多元醇合成 CO 基 PU 泡沫 (PU-CO)。然后使用三轴压缩和加热将常规 PU 泡沫和 PU-CO 泡沫转化为拉胀泡沫。分析了泡沫的化学成分、微观结构以及热、机械和抗菌性能。发现加入一氧化碳改善了泡沫的抗菌和机械性能。CO 基 APU (CO-APU) 泡沫表现出最高的压缩强度和储能模量。与 PU 泡沫相比，还观察到 PU-CO 的热稳定性增加。这些 CO-APU 泡沫可能是轮椅座垫和医院病床应用中传统 PU 泡沫的更好替代品。© 2021 工业化学学会。

更新日期：2021-05-21

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