可降解顆粒：塑料降解的方法有哪些?

　　塑料降（jiàng）解的方法（fǎ）有哪些?

What are the methods for plastic degradation?

　　聚乳酸（PLA）是由（yóu）植物糖分提取的丙交酯單體聚合而成，在工業堆肥下可完全降解為水和二氧化碳（tàn）。

Polylactic acid (PLA) is polymerized from propylene glycol monomers extracted from plant sugars and can be completely degraded into water and carbon dioxide under industrial composting.

　　聚乙醇酸(PGA)：全生物降（jiàng）解材料，“環境友（yǒu）好”屬性突出

Polyglycolic acid (PGA): a fully biodegradable material with outstanding "environmentally friendly" properties

　　PGA為全生物降解材料，其降解條件溫（wēn）和，在水和微生物作用下，在自然環境中能實現（xiàn）快速降解，終降（jiàng）解產物為二氧化碳和水。除此之外，PGA還能在海水中進行降解，其降解產物對人體和環境皆（jiē）是無害的。

PGA is a fully biodegradable material with mild degradation conditions. It can achieve rapid degradation in the natural environment under the action of water and microorganisms, and the final degradation products are carbon dioxide and water. In addition, PGA can also be degraded in seawater, and its degradation products are harmless to both humans and the environment.

　　聚羥基脂肪酸酯（PHA）是（shì）由微生物通過各種碳源發酵（jiào）而合成的不同結（jié）構的脂肪（fáng）族共聚聚酯，不僅能夠用於包裝材（cái）料、農膜等，還能廣泛的應（yīng）用於藥品、化妝品（pǐn）、動物飼料等領域。

Polyhydroxyalkanoates (PHA) are different structured aliphatic copolyesters synthesized by microorganisms through fermentation from various carbon sources. They can be used not only in packaging materials, agricultural films, but also widely in fields such as pharmaceuticals, cosmetics, and animal feed.

　　二氧化碳共聚物（PPC）是一種以二氧化碳（tàn）和環氧丙烷（wán）為原料共聚製備（bèi）得到的一（yī）種新型（xíng）高分子材料，其中聚合物中二氧化碳部分可以高（gāo）達百分之四（sì）十。二氧化碳共聚物是石（shí）化行業關（guān）注的友好型塑料原料，具有資（zī）源（yuán）和能源消（xiāo）耗少、對生態和環境汙染（rǎn）小、再生利用（yòng）率高的特點。二氧化碳共聚物作為環保產品和高科技產品，不但可以（yǐ）減少對石油的（de）消耗，而且環境適應性也很理想，它的生產和應用，無論從環境保護，或是從資源再生利（lì）用的角度（dù）看（kàn），都具有重要的意義。

Carbon dioxide copolymer (PPC) is a new type of polymer material prepared by copolymerization of carbon dioxide and epichlorohydrin, in which the carbon dioxide portion of the polymer can reach up to 40%. Carbon dioxide copolymers are friendly plastic raw materials of concern to the petrochemical industry, characterized by low resource and energy consumption, low ecological and environmental pollution, and high recycling efficiency. Carbon dioxide copolymers, as environmentally friendly and high-tech products, not only reduce the consumption of petroleum, but also have ideal environmental adaptability. Their production and application are of great significance, whether from the perspective of environmental protection or resource recycling.

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