生物降解顆粒是指一類由自然界存在的微生物如細(xì)菌、霉菌（真菌）和藻類的作用而引起降解的塑料。理想的生物降解塑料是一種具有優(yōu)良的使用性能、廢棄后可被環(huán)境微生物完全分解、被無機(jī)化而成為自然界中碳素循環(huán)的一個組成部分的高分子材料。

Biodegradable particles are a kind of plastics that are degraded by natural microorganisms such as bacteria, molds (fungi) and algae. The ideal biodegradable plastic is a kind of polymer material with excellent performance, which can be completely decomposed by environmental microorganisms after being discarded, and become an integral part of the carbon cycle in nature.

生物降解顆粒又稱生物分解塑料，指在自然界如土壤和/或沙土等條件下，和/或特定條件如堆肥化條件下或厭氧消化條件下或水性培養(yǎng)液中，由自然界存在的微生物作用引起降解，并完全降解變成二氧化碳（CO?）或/和甲烷（CH?）、水（H?O）及其所含元素的礦化無機(jī)鹽以及新的生物質(zhì)的塑料。

Biodegradable particles, also known as biodegradable plastics, refer to the degradation caused by natural microorganisms under natural conditions such as soil and / or sandy soil, and / or under specific conditions such as composting conditions or anaerobic digestion conditions or in aqueous culture solution, and completely degraded into carbon dioxide (co?) Or / and methane (CH?) Water (H? O) and mineralized inorganic salts of the elements contained therein as well as new biomass plastics.

按原料成分來源分類，生物降解塑料可分為生物基生物降解塑料及石化基生物降解塑料兩類。

According to the source of raw materials, biodegradable plastics can be divided into two types: Bio based biodegradable plastics and petrochemical based biodegradable plastics.

生物基生物降解塑料主要可分為四類：一類為天然材料直接加工得到的塑料；第二類為微生物發(fā)酵和化學(xué)合成共同參與得到的聚合物；第三類為由微生物直接合成的聚合物；第四類為以上這些材料共混加工得到的或這些材料和其他化學(xué)合成的生物降解塑料共混加工得到的生物降解塑料。

Bio based biodegradable plastics can be divided into four categories: one is the plastics directly processed from natural materials; The second type is the polymer obtained by microbial fermentation and chemical synthesis; The third type is polymers synthesized directly by microorganisms; The fourth category is biodegradable plastics obtained by blending these materials or blending these materials with other chemically synthesized biodegradable plastics.

石化基生物降解塑料是指以化學(xué)合成的方法將石化產(chǎn)品單體聚合而得的塑料，如PBAT、聚丁二酸丁二醇酯（PBS）、二氧化碳共聚物（PPC）等。

Petrochemical based biodegradable plastics refer to plastics obtained by polymerizing monomers of petrochemical products through chemical synthesis, such as PBAT, polybutylene succinate (PBS), carbon dioxide copolymer (PPC), etc.

按生物降解過程分類，生物降解塑料可分為完全生物降解塑料和破壞性生物降解塑料兩種。破壞性生物降解塑料當(dāng)前主要包括淀粉改性（或填充）聚乙烯PE、聚丙烯PP、聚氯乙烯PVC、聚苯乙烯PS等。

According to the classification of biodegradation process, biodegradable plastics can be divided into completely biodegradable plastics and destructive biodegradable plastics. Currently, destructive biodegradable plastics mainly include starch modified (or filled) polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), etc.

完全生物降解塑料主要是由天然高分子（如淀粉、纖維素、甲殼質(zhì)）或農(nóng)副產(chǎn)品經(jīng)微生物發(fā)酵或合成具有生物降解性的高分子制得，如熱塑性淀粉塑料、脂肪族聚酯、聚乳酸、淀粉/聚乙烯醇等均屬這類塑料。更多相關(guān)內(nèi)容就來我們網(wǎng)站http://www.qylxschool.cn咨詢看看吧！

Fully biodegradable plastics are mainly made from natural polymers (such as starch, cellulose, chitin) or agricultural and sideline products through microbial fermentation or synthesis of biodegradable polymers, such as thermoplastic starch plastics, aliphatic polyester, polylactic acid, starch / polyvinyl alcohol, etc. For more information, please visit our website http://www.qylxschool.cn Consult and see!