可降解材料的分类是什么你知道吗? - 公司快讯

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可降解材料的分类是什么你知道吗?

可降解材料的分类是什么你知道吗?

来源网址:http://www.rsoau.com 2019-02-15 15:07:06    

进入新世纪,越来越严重的动力和环境的问题让人们意识到保护环境的严重性,尤其是包装的资料用量巨大,各大城市都被白色废物所困扰了。

Entering the new century, more and more serious power and environmental problems make people realize the seriousness of environmental protection, especially the huge amount of packaging information, and major international cities are plagued by white waste.
因此,可降解塑料包装资料开发显得更为重要,各国在这一领域做了很多的作业,并取得可喜的效果。生物降解资料的实现方法又有多种,如采用天然的成分加工;在树脂中参加淀粉等物质使资料可以被细菌分化 ;开发可水解聚合物等。
Therefore, the development of packaging materials for degradable plastics is more important. Many countries in the world have done a lot of work in this field and achieved gratifying results. There are many ways to realize biodegradable data, such as processing with natural ingredients, participating in starch and other substances in resins to make the data differentiated by bacteria, and developing hydrolyzable polymers.
组成高分子型降解塑料实际上就是化学组成生物降解塑料,这首要包括脂肪族聚酯类(PCL)、聚酰胺类、多糖共聚物、聚乳酸等,现已开发出许多可生物降解的组成高分子资料,有聚乳酸(PLA)、聚乙烯醇(PVA)、聚己内酯(PCL)等聚合物。PLA由乳酸单体聚合而成,乳酸由特殊菌种将淀粉转化生成,PLA价格昂贵,现首要应用在医药上。
Composition of biodegradable polymer plastics is actually chemical composition of biodegradable plastics, which mainly includes aliphatic polyesters (PCL), polyamides, polysaccharide copolymers, polylactic acid and so on. Many biodegradable polymer materials have been developed, including polylactic acid (PLA), polyvinyl alcohol (PVA), polycaprolactone (PCL) and other polymers. PLA is polymerized from lactic acid monomers, and lactic acid is produced from starch by special bacteria. PLA is expensive and is mainly used in medicine.
脂肪族聚酯(如聚已内酯PCL)具有较好的生物降解性,与其它广泛使用的塑料树脂具有杰出的相容性,但耐热性和物理强度差。
Aliphatic polyesters (such as polycaprolactone PCL) have good biodegradability, excellent compatibility with other widely used plastic resins, but poor heat resistance and physical strength.
而芳香族聚酯,如对苯二甲酸乙二醇酯的熔点高,机械强度大,但降解性很差,以无水碳酸锌为催化剂在氮气流下混溶可组成共聚物,通过高分子链间的酯交换所制取的这类共聚物,既具有杰出的生物降解性,又具有较强的耐热性和机械强度。
Aromatic polyesters, such as ethylene terephthalate, have high melting point, high mechanical strength, but poor degradation. Copolymers can be formed by mixing anhydrous zinc carbonate in nitrogen flow. These copolymers prepared by transesterification between polymer chains have excellent biodegradability, heat resistance and mechanical strength.
聚丙交酯是近年出现的一种可作为包装资料的生物降解塑料,具有广阔的应用前景。聚丙交酯的质料是乳酸,乳酸分子中同时具有羟基和羧基官能团,反应活性较高,在恰当条件下简单脱水缩组成聚乳酸。聚丙交酯的组成有直接缩聚和丙交酯的开环聚合两种方法。
Polylactide is a kind of biodegradable plastic which can be used as packaging material in recent years. It has broad application prospects. The material of polylactide is lactic acid. The molecule of lactic acid has both hydroxyl and carboxyl functional groups. It has high reactivity. Under appropriate conditions, polylactic acid is simply dehydrated and condensed to form polylactic acid. The composition of poly (lactide) includes direct polycondensation and ring opening polymerization of lactide.
无论是组成的聚丙交酯还是发酵的葡萄糖、麦芽糖、谷物甜汁或马铃薯淀粉都可用来制备生物降解资料。堆肥的聚丙交酯一个月左右降解,并能被海水中的微生物吸收。
Whether it is composed of polylactide or fermented glucose, maltose, cereal juice or potato starch, it can be used to prepare biodegradable materials. The compost polylactide is degraded in about a month and can be absorbed by microorganisms in seawater.
以上信息是我们可降解颗粒整理发布希望对大家有所帮助我们的网站是:http://www.rsoau.com
The above information is our degradable particle sorting release hope to help you with our website is: http://www.rsoau.com!

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