胶原降解物-多糖复合物对土壤的保水性研究

Effect of collagen degradation products-polysaccharide composites on soil's water retention

利用5种不同糖类化合物(蔗糖、乳糖、羟乙基纤维素、羧甲基纤维素钠及β-环糊精)与废革屑降解物进行作用,制备了胶原降解物-多糖复合物。对复合物进行溶液稳定性测试,结果表明:胶原降解物-羧甲基纤维素钠复合物溶液在0℃下发生分层,在25℃及50℃下也显清浊分离现象,而其它胶原降解物-多糖复合物溶液均保持稳定。将胶原降解物-多糖复合物溶液分别均匀覆盖于土壤表面进行吸水性、保水性及渗透性能研究。结果表明:制备的胶原降解物-多糖复合物的吸水及保水性能均较好,且胶原降解物-羟乙基纤维素的吸水、保水性最佳,吸湿率及保水率分别可达98%和54%,胶原降解物-羟乙基纤维素复合物将利于土壤中作物的生长。

The collagen degradation products - polysaccharide composites were prepared by the interaction between 5 different polysaccharides （ sucrose, lactose, hydroxyethyl cellulose, sodium carboxymethyl cellulose and β - cyclodextrin） and the collagen degradation products. The stability of all composite solutions was tested in varied temperatures. The results show that the collagen degradation products - sodium carboxymethyl cellulose composite solution appears stratification at 0℃ obviously, and the layered character becomes weaker under 25℃ and 50℃. And the other four are stable. Moreover, the water absorption, water retention and permeability of collagen degradation products - polysaccharide composites were tested by spraying their solutions on the surface of soils evenly. The results indicate that the prepared collagen degradation products - polysaccharide composites have excellent wa- ter - absorption and water - retention properties, of which collagen degradation products - hydroxyethyl cellulose composite are most Significant. The hygroscopic rate and water - retention rate of collagen degradation products - hydroxyethyl cellulose compos- ite can reach 98% and 54% respectively, which will be good for crops growth.