At present the majority of polyurethanes, including polyurethane foams (PUF), are obtained from petrochemical substrates. However, green chemistry policy worldwide and restricted crude oil resources are driving the use of biological substrates to make polyurethanes. Widely available cellulose seems to meet the expectation of a polyol substrate for use in synthesizing polyurethane foams provided that it is converted first into liquid resin with free hydroxyl groups.

中文翻译：

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纤维素水解产物制得的多元醇和聚氨酯泡沫

目前，大多数聚氨酯，包括聚氨酯泡沫（PUF），是从石油化学基材获得的。但是，全球范围内的绿色化学政策和有限的原油资源正在推动使用生物底物来生产聚氨酯。广泛可用的纤维素似乎满足了用于合成聚氨酯泡沫的多元醇基质的期望，条件是首先将其转化为具有游离羟基的液态树脂。