共查询到19条相似文献,搜索用时 218 毫秒
1.
2.
淀粉的塑化机理及基在生物降解餐具上的应用研究 总被引:1,自引:0,他引:1
通过DSC、红外及X-衍射仪,研究了淀粉塑化前后性能及结构的变化,阐明了淀粉的塑化机理,进一步探讨了塑化后的淀粉在一次性生物降解餐具上的应用。 相似文献
3.
4.
以玉米淀粉为原料,制备儿童玩具,确定了工业化生产的工艺条件,并探讨了淀粉玩具的力学性能和卫生指标。 相似文献
5.
6.
淀粉塑料为解决塑料污染环境应运而生,但80年代风行一时的多是填充型淀粉塑料,其组分大部分不能降解的通用树脂,我们试制了一种含淀粉90%以上的所谓全淀粉餐具,它能完全生物降解,阐述了其制备试验和性能测试等工作,并进行了讨论。 相似文献
7.
本文介绍了淀粉-纤维质一次性餐具制备、应用和发展趋势,对比了淀粉-纤维质餐具、纤维质餐具、纸餐具和现行塑料餐具的优缺点,指出只要改进工艺,淀粉-纤维质餐具有很大的发展潜力。 相似文献
8.
9.
10.
11.
12.
采用乙醇-碱溶液处理淀粉的方法,在常压状态下对淀粉进行α-化修饰,以溶解度和黏度作为评价指标,通过正交试验和响应面分析,得出制备颗粒α-化修饰淀粉的最佳工艺条件:反应温度53.90℃,碱用量4.50 g,乙醇体积分数44.08%,乙醇用量829.19 g。 相似文献
13.
针织涂层牙周再生片的开发及产业化研究 总被引:1,自引:1,他引:0
介绍一种应用于牙周引导组织再生术的复合材料———牙周再生片,探讨了其涂层材料和涂层方法的选择;通过测试涂层前后的相关工艺参数对骨架织物的涂层效果进行了比较,还研究了牙周再生片产业化中涂层技术的一些问题。 相似文献
14.
15.
Multilayer films based on plasticized wheat starch (PWS) and various biodegradable aliphatic polyesters have been prepared through flat film coextrusion and compression molding. Poly(lactic acid) (PLA), polyesteramide (PEA), poly(μ‐caprolactone) (PCL), poly(butylene succinate adipate) (PBSA), and poly(hydroxybutyrate‐co‐valerate) (PHBV) were chosen as the outer layers of the stratified "polyester/PWS/polyester" film structure. The main goal of the polyester layers was to improve significantly the properties of PWS in terms of mechanical performance and moisture resistance. Since no specific compatibilizer or tie layer were added, the properties of subsequent films rely on the compatibility between the respective materials only. The effects of glycerol content in PWS, polyester type, and film composition on the mechanical properties and adhesion strength of multilayers were investigated. The conditions for optimal product performance were examined. The multilayer films may be suitable for applications in food packaging or disposable articles. 相似文献
16.
17.
目前,可生物降解包装材料已经成为替代传统合成材料的重要环保型材料。早期,已有研究人员将可生物降解聚合物应用于包装材料领域。近年来,随着环境问题,原油储量压力的加剧和普通消费者的偏爱,生物基及可生物降解聚合物得到进一步发展。本文介绍了可生物降解包装材料的发展过程,重点综述了材料的性能和应用。 相似文献
18.
0引言可生物降解聚合物分为合成生物降解聚合物(如某些聚酯)和天然生物降解聚合物(如淀粉)。现代可生物降解包装材料可以通过 相似文献
19.
Starches having different molecular sizes were obtained by subjecting rice starch and maize starch, independently, to oxidation with aqueous sodium hypochlorite solutions of different concentrations. These starches were then reacted with urea in a dry state to yield mainly starch carbamate. The latter was isolated from the reaction products by treatment of the latter with either water or 4% aqueous NaOH solution. It was observed that regardless of the kind and molecular size of starch, treatment with water brings about starch carbamate which swells but does not dissolve completely in water. Against this was water soluble starch carbamate isolated by ethyl alcohol precipitation from NaOH solution (after neutralization). Studies of the rheological properties of the water soluble starch carbamates revealed that starch carbamates derived from rice starches are characterized by either thixotropic or pseudoplastic character depending on the molecular structure of starch. On the other hand, starch carbamates derived from maize starch exhibit pseudoplastic behaviour by virtue of their relatively lower molecular weight and higher carboxyl content. It was also found that the apparent viscosity of starch carbamates is determined by the kind of starch, the degree of oxidation and the storing time. 相似文献