可降解颗粒是制作的环保降解塑料的原料，它主要是利用植物秸杆等制成的对人体和环境友好的物品,不同于三大合成的塑料,废弃后,在生物环境的作用下,可以自行分解,无论对人还是环境都无害,属于绿色包装可降解塑料袋是“能降解、易降解”的一种一次性购物袋。

Degradable particles are the raw materials of environmentally-friendly degradable plastics, which are mainly made of plant straw and other materials that are friendly to human body and environment. They are different from the three synthetic plastics. After being discarded, they can decompose themselves under the action of the biological environment, and are harmless to both people and the environment. They belong to green packaging. Degradable plastic bags are disposable shopping bags that are "degradable and easy to degrade".

可降解塑料通过优化选择生产原料和制作工艺，在数天或几个月的日晒雨淋及微生物的共同作用下，能逐步分解成碎片，终全部降解。可降解塑料的原材料主要有：聚乳酸、聚羟基脂肪酸酯、二氧化碳共聚物、淀粉、改性淀粉或其它纤维素、光敏剂、生物降解剂等。

By optimizing the selection of production materials and production process, degradable plastics can be gradually decomposed into fragments and finally completely degraded under the joint action of several days or months of sunshine, rain and microorganisms. The raw materials of degradable plastics mainly include polylactic acid, polyhydroxy fatty acid ester, carbon dioxide copolymer, starch, modified starch or other cellulose, photosensitizer, biodegradable agent, etc.

目前，可降解塑料的原材料主要有：

At present, the main raw materials of degradable plastics are:

聚乳酸（PLA），它是由植物糖分提取的丙交酯单体聚合而成，在工业堆肥下可完全降解为水和二氧化碳。

Polylactic acid (PLA), which is polymerized from lactide monomer extracted from plant sugar, can be completely degraded into water and carbon dioxide under industrial composting.

聚羟基脂肪酸酯（PHA），聚羟基脂肪酸酯（PHA）是由微生物通过各种碳源发酵而合成的不同结构的脂肪族共聚聚酯，不仅能够用于包装材料、农膜等，还能广泛的应用于药品、化妆品、动物饲料等领域。

Polyhydroxy fatty acid ester (PHA) and polyhydroxy fatty acid ester (PHA) are aliphatic copolyesters with different structures synthesized by microorganisms through fermentation of various carbon sources. They can be used not only in packaging materials, agricultural films, but also in medicine, cosmetics, animal feed and other fields.

二氧化碳共聚物（PPC），外观与聚乙烯塑料相似，弹性良好，在土壤中可在短时间内完全降解，并直接被植物吸收利用。

Carbon dioxide copolymer (PPC), similar in appearance to polyethylene plastic, has good elasticity, can be completely degraded in soil in a short time, and can be directly absorbed by plants.

其他添加剂，在塑料包装制品的生产过程中加入一定量的添加剂（如淀粉、改性淀粉或其它纤维素、光敏剂、生物降解剂等），使塑料的稳定性下降，较容易在自然环境中降解。

Other additives: add a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizer, biodegradable agent, etc.) in the production process of plastic packaging products to reduce the stability of plastics and make them easier to degrade in the natural environment.

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