农业工程学报2012，Vol.28Issue(13)：269-275,7.DOI:10.3969/j.issn.1002-6819.2012.13.043
可降解地膜原料大豆秸秆纤维的制备工艺及参数优化
Preparation technology and parameters optimization for soybean straw fiber as biodegradable film material
摘要
Abstract
In order to solve the problem of environmental pollution caused by straw burning and plastic film, straw resources should be utilized with high value. The method of the central composite rotatable quadratic orthogonal experimental design was applied to explore the possibility for preparing soybean straw fiber as clean, high strength and high yield raw material for biodegradable film with physical method. The effects of material characteristics and operating parameters on soybean straw fiber properties and optimal parameters combination were studied. Soybean stalk length, soak time, operation temperature, spindle speed and feeding rate were selected as influence factors. Fiber yield, fiber aspect ratio and tensile strength were selected as response functions. The Design-expert 6.0.10 software was applied to design the scheme and analyze the data. The results showed that 1) with the parameters of straw length 7 cm, soaking time 24 h, feeding rate 27 g/min, operation temperature 80～85℃ and spindle speed 110～120 r/min, the fiber yield was over 80%, dry tensile strength was over 7 N, aspect ratio was over 5. 2) The order of contribution rate of all the factors on fiber yield was: soak time>spindle speed>feed rate>stalk length> operation temperature; The order of contribution rate of all the factors on tensile strength was: stalk length> operation temperature> feed rate>soak time>spindle speed; The order of contribution rate of all the factors on fiber aspect ratio was: feeding rate>stalk length>operation temperature>soak time>spindle speed. The research can provide a theoretical and technical support for manufacturing biodegradable film with soybean straw.关键词
秸秆/纤维/优化/可降解地膜Key words
straw/ fibers/ optimization/ biodegradable film分类
农业科技引用本文复制引用
李丽霞,陈海涛..可降解地膜原料大豆秸秆纤维的制备工艺及参数优化[J].农业工程学报,2012,28(13):269-275,7.基金项目
黑龙江省科技计划重点项目(GA09B501) （GA09B501）
哈尔滨市科技创新人才研究专项资金项目(2006RFLXN002). （2006RFLXN002）
