Soy-castor oil based polyols prepared using a solvent-free and catalyst-free method and polyurethanes therefrom
Soy-castor oil based polyols prepared using a solvent-free and catalyst-free method and polyurethanes therefrom
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DOI：
10.1039/c3gc40531a
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发表时间：
2013-05
期刊：
影响因子：
9.8
通讯作者：
Chaoqun Zhang;Ying Xia;Ruqi Chen;S. Huh;Patrick A. Johnston;M. R. Kessler
中科院分区：
文献类型：
--
作者：
Chaoqun Zhang;Ying Xia;Ruqi Chen;S. Huh;Patrick A. Johnston;M. R. Kessler
采用环保、无溶剂/无催化剂的方法，从环氧化大豆油和蓖麻油脂肪酸中开发出生物基多元醇。系统研究了羧基与环氧基的摩尔比、反应时间和反应温度对多元醇结构的影响。随后，由这些绿色多元醇制备聚氨酯薄膜。将新型大豆蓖麻油基聚氨酯薄膜的性能与分别由蓖麻油和甲氧基化大豆油多元醇制备的另外两种聚氨酯薄膜进行了比较。热和机械测试表明，由于新型多元醇的交联度较高，由新型多元醇制备的聚氨酯薄膜表现出更高的玻璃化转变温度、拉伸强度、杨氏模量和热稳定性。此外，采用无溶剂、无催化剂合成路线制备的新型多元醇是100%生物基的，比用于聚氨酯生产的传统大豆基多元醇更环保、更经济。
Bio-based polyols from epoxidized soybean oil and castor oil fatty acid were developed using an environmentally friendly, solvent-free/catalyst-free method. The effects of the molar ratios of the carboxyl to the epoxy groups, reaction time, and reaction temperature on the polyols’ structures were systematically studied. Subsequently, polyurethane films were prepared from these green polyols. Properties of the new, soy-castor oil based polyurethane films were compared with two other polyurethane films prepared from castor oil and methoxylated soybean oil polyol, respectively. Thermal and mechanical tests showed that the polyurethane films prepared from the new polyols exhibited higher glass transition temperatures, tensile strength, Young's modulus, and thermal stability because of the higher degree of cross-linking in the new polyols. Moreover, the novel polyols, prepared using the solvent-free and catalyst-free synthetic route, were 100% bio-based and facilitate a more environmentally friendly and economical process than conventional soy-based polyols used for polyurethane production.