| 摘要: |
| 目的 研究大豆蛋白胶的胶合机理， 为进一步提高大豆蛋白胶的胶粘性能提供理论依据。方法 通过实验， 对大豆蛋白胶的基本理化性质进行分析， 利用差示扫描量热法（DSC）和傅里叶变换红外光谱分析（FTIR）， 对大豆蛋白胶与纤维素的胶合机理进行了研究。结果 在150 ℃左右大豆蛋白胶发生吸热反应， 亲水性基团减少， 酰胺键增加； 大豆蛋白胶与纤维素混合固化时， 吸热反应温度降低， 焓变增加， 固化后—COOH 和 C—OH 吸收峰减弱。结论 大豆蛋白胶与纤维素的固化过程存在交联反应， 大豆蛋白胶与纤维素之间发生吸热反应生成高聚物。 |
| 关键词: 大豆蛋白胶 纤维素 差示扫描量热法 傅里叶变换红外光谱分析 |
| DOI： |
| 分类号:TB484.6 |
| 基金项目:浙江省重大科技专项重点农业项目 （2011C12050）；浙江省院合作林业科技项目 （2010SY04） |
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| Mechanism of Adhesive Bonding between Soy Protein-based Adhesive and Cellulose |
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HAN Min, YANG Guang, LU Jing-chang
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University of Shanghai for Science and Technology， Shanghai 200093， China
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| Abstract: |
| To investigate the mechanism of adhesive bonding between soy protein adhesive and cellulose, and to provide theoretical basis for further improvement of the adhesive properties of the soy protein adhesive. The physical and chemical properties of the soy protein adhesive were tested and analyzed. The soy protein-based adhesive and the cellulose were characterized using DSC and FTIR to examine the bonding mechanism. Endothermic reaction occurred for soy protein adhesive at about 150℃, resulting in decreased number of hydrophilic groups and increased number of amide bonds. During the curing process of the mixture of soy protein adhesive and cellulose, the endothermic reaction temperature decreased, and the enthalpy increased. The absorption of —COOH and C—OH decreased after curing. There was cross-linkage during the curing process of soy protein adhesive and cellulose, and polymers were formed during the endothermic reactions between soy protein adhesive and cellulose. |
| Key words: soy protein adhesive cellulose DSC FTIR |
