中文摘要：

通过阳离子瓜尔胶（CGG）与阳离子淀粉（CS）复合反应自制阳离子瓜尔胶-阳离子淀粉复合增强剂（CGG-CS），并探讨了其增强作用效果。结果表明，CGG-CS对浆料具有很好的增强效果，最佳用量为0．8％，体系适宜pH范围为7～7．5。扫描电镜分析结果显示，CGG-CS作为增强剂，加入浆料后，能够提高纸张强度，纸张的断裂主要以纤维断裂为主，说明该助剂能有效提高纤维间的结合面积和结合强度，其增强效果明显。

英文摘要：

The composite of cationic guar gum （CGG） and cationic starch （CS） was prepared by recombination reaction and was used as strengthening agent of bleached softwood kraft pulp. The trial result showed that the paper strength could be greatly enhanced by using modified cationic guar gum （CGG-CS）. It could obtain good effect at charge of CGG-CS 0.8%. The appropriate pH value was 7 - 7.5. SEM showed that the fiber dispersed more uniform with added the CGG-CS and the fiber rupture was in the condition of rupture, as shown that it could efficiently improve fiber bonding strength and the area of component fiber, increase the fiber ability to build hydrogen bonds and sequentially increase the strength of paper sheets.