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生物降解与玉米淀粉基降解一次性餐盒的原理比较!

生物降解与玉米淀粉基降解一次性餐盒的原理比较!

网址:http://www.qiluxinke.com 手机页面二维码 2021-05-19 18:03:25    

可生物降解的一次性餐盒原理:许多合成的纯聚合物均有抗微生物侵蚀能力。但添加剂(如增塑剂、润滑剂、色素和耐氧剂等)则减低这种能力。增塑剂残余脂肪酸如硬脂酸酯可被微生物降解并致使聚合物表面与性能乃至基础结构的破坏。已知微生物对于自然聚合物降解作用是生物合成产出的酶蛋白质来完成的。这些酶蛋白可着落于细胞壁上,或存在于细胞原生质结构中。一些酶能潜入到周围环境中,有些酶则在细胞内,只有在细胞被溶解或是机械破碎之时才释放出来。酶对化学反应,只有较高的催化能力在适宜的生理条件下速度进行。

Principle of biodegradable disposable lunch box: many synthetic pure polymers have anti microbial erosion ability. However, additives (such as plasticizers, lubricants, pigments and antioxidants) reduce this ability. Plasticizer residual fatty acids such as stearate can be degraded by microorganisms, resulting in the destruction of polymer surface, properties and even infrastructure. It is known that microbial degradation of natural polymers is accomplished by biosynthesis of enzymes and proteins. These enzyme proteins can be located on the cell wall or in the protoplast structure. Some enzymes can sneak into the surrounding environment, while others are in the cell and are released only when the cell is dissolved or broken mechanically. The enzyme only has high catalytic ability to chemical reaction, and can proceed at a high speed under suitable physiological conditions.
淀粉基降解一次性餐盒的原理:
Principle of starch based degradable disposable lunch box:
物理改性:理改性是指通过淀粉细微化、挤压机破坏淀粉结构或添加偶联剂和增塑剂等添加剂以增加淀粉与通用餐盒的相容性。
Physical modification: physical modification refers to increasing the compatibility of starch with general food box by starch refinement, destroying starch structure by extruder or adding additives such as coupling agent and plasticizer.
                          一次性玉米淀粉餐具
化学改性:化学改性通常是向淀粉分子引入疏水基团,使它在淀粉与合成树脂间起到了加强相容性的功能,改性的方法有羟烷基化、酯化或接枝共聚、醚化和交联改性等。
Chemical modification: chemical modification is usually to introduce hydrophobic groups into starch molecules to enhance the compatibility between starch and synthetic resin. The modification methods include hydroxyl alkylation, esterification or graft copolymerization, etherification and cross-linking modification.
玉米淀粉共混餐盒:共聚型光解一次餐盒主要利用共聚反应于高分子主链引入了羧基型感光基而赋予了其光降解的特性,并通过调节羧基型感光基团含量可控制光降解活性。
Corn starch blending lunch box: the copolymerization type photodegradation lunch box mainly uses the copolymerization reaction to introduce carboxyl photosensitive group into the main chain of polymer, which gives it the characteristics of photodegradation, and the photodegradation activity can be controlled by adjusting the content of carboxyl photosensitive group.
全玉米淀粉一次性餐盒全淀粉型淀粉指以淀粉为主料(占90%左右),未添加任了石油化工原料一类产品,这里淀粉包括天然淀粉与改性淀粉,天然淀粉由于分子之间存有氢键,溶解性很差,融水但并不易溶于水,且直接加热时没有熔融过程,300℃以上分解。
All corn starch disposable lunch box all starch starch refers to a kind of products with starch as the main material (accounting for about 90%) and without any petrochemical raw materials. Here, starch includes natural starch and modified starch. Due to hydrogen bonds between molecules, natural starch has poor solubility, but it is not easy to dissolve in water, and there is no melting process when heated directly, and it decomposes above 300 ℃.
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