The lignosulfonate water reducing agent was prepared via oxidation and sulfonation of wheat straw alkali lignin.

以麦草碱木素为原料，采用氧化磺化法，制备了磺化碱木素减水剂。

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Hydroxyl values of straw alkali lignin and modified lignin resin were determined by potentiometric titration in suitable composite acylation system.

选用合适的复合酰化体系，通过电位滴定，测定了工业碱木质素及其改性树脂的羟值。

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It is difficult for alkali lignin of wheat straw produced by alkaline pulping to be widely used in industry because of its poor solubility and surface activities.

尤为严重的是碱法制浆产生的麦草碱木素由于水溶性和表面活性差而难以在工业上得到广泛应用，从而造成对环境的严重污染。

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