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 biosesynthesis 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.

澱粉基降解一次性餐盒的原理：

Principle of starch based degradable disposable lunch box:

物理改性：理改性是指通過澱粉細微化、擠壓機破壞澱粉結構或添加偶聯劑和增塑劑等添加劑以增加澱粉與通用餐盒的相容性。

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.
                          

化學改性：化學改性通常是向澱粉分子引入疏水基團，使它在澱粉與合成樹脂間起到了加強相容性的功能，改性的方法有羥烷基化、酯化或接枝共聚、醚化和交聯改性等。

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.

玉米澱粉共混餐盒：共聚型光解一次餐盒主要利用共聚反應於高分子主鏈引入了羧基型感光基而賦予了其光降解的特性，並通過調節羧基型感光基團含量可控製光降解活性。

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.

全玉米澱粉一次性餐盒全澱粉型澱粉指以澱粉為主料(占90%左右)，未添加任了石油化工原料一類產品，這裏澱粉包括天然澱粉與改性澱粉，天然澱粉由於分子之間存有氫鍵，溶解性很差，融水但並不易溶於水，且直接加熱時沒有熔融過程，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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