共查询到20条相似文献,搜索用时 734 毫秒
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阐述了生物降解塑料的种类;介绍了聚乳酸(PLA)、聚丁二酸丁二醇酯(PBS)、聚己内酯(PCL)、聚羟基脂肪酸酯(PHA)、聚对苯二甲酸丙二醇酯(PTT)的产能及生产企业;提出了影响产能提升的因素及产业发展方向。 相似文献
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生物降解塑料中国专利分析研究 总被引:2,自引:0,他引:2
对1989年-2006年4月期间公开的生物降解塑料技术中国专利进行了检索,从历年专利申请量、专利类型、申请人构成、专利技术特征等方面进行了分析,结果表明:我国生物降解塑料企业对于生物降解塑料技术的研究还没有足够的自主知识产权,而日本、美国、德国和意大利等国家的生物降解塑料企业在此领域的技术实力较强,国内企业应该重点关注。目前生物降解塑料的发展方向是淀粉僳合物共混塑料、全淀粉热塑性塑料、生物聚酯型、聚乳酸、二氧化碳塑料等全生物降解塑料,如何提高产品性能、降低生产成本是发展生物降解塑料的关键。 相似文献
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中国生物降解塑料开发历史、现状和发展趋势 总被引:17,自引:1,他引:17
回顾了中国生物降解塑料30多年的发展历史,介绍了目前中国的市场概况以及有关热塑性淀粉等天然聚合物、微生物发酵得到的聚羟基丁酸/戊酸酯、糖蜜等发酵得到的乳酸合成的聚乳酸、二氧化碳/环氧化合物共聚物等脂肪族聚酯和脂肪族/芳香族共聚酯等生物降解塑料的开发现状。另外,也简介了相关的生物降解塑料的标准化工作进展和讨论了今后的发展趋势。 相似文献
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概述了目前国内外生物降解塑料的产业化现状和应用前景,包括淀粉基生物降解塑料、聚乳酸(PLA)、聚丁二酸丁二醇酯(PBS)、二氧化碳基共聚物(PPC),重点介绍了PPC的产品性能、技术发展趋势及商业化前景。 相似文献
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Biodegradable Polymers: Test Methods and Assessment Standards. Technological difficulties in plastics recycling as well as critical emission into the environment during waste incineration give rise to considerations of utilizing plastics in composting systems. While market supply of ‘biodegradable plastics’ is increasing there is a need for test methods and assessment standards for these substances. This paper presents the basis and discusses microbial procedures, analytical techniques and requirements for the tests to be developed. 相似文献
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Yohko Tachibana Senri Hayashi Miwa Suzuki Phouvilay Soulenthone Yuya Tachibana Ken-ichi Kasuya 《Journal of Polymer Research》2017,24(10):159
Environmental pollution caused by commodity plastics has become a global issue. As a result, biodegradable plastics have found multiple applications in recent years, particularly in the manufacture of food packaging containers. However, microbes present in fermented foods have been found to degrade biodegradable plastics. In this study, we report, for the first time, a poly(3-hydroxybutyrate) (P(3HB))-degrading bacterium isolated from a type of washed rind cheese, Pont-l'évêque lait cru. The P(3HB)-degrading isolate, designated as PONα, was characterized in detail. The strain was found to be gram-positive and filamentous-shaped; the DNA G+C content was 71.6 mol%, and anteiso-C15:0 was found to be the major fatty acid. The strain grew well in the range of 37–40 °C and formed a large clear zone on P(3HB) medium at 37 °C. The phenotypic properties and phylogenetic inference indicated that strain PONα is closely related to Cellulosimicrobium cellulans. Strain PONα formed a clear zone on P(3HB), LB with P(3HB), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), and chitin media plates, whereas no clear zone was found on poly(ethylene succinate) (PESu), poly(butylene succinate) (PBSu), poly(ε-caprolactone) (PCL), poly(lactic acid) (PLA), poly(butylene adipate-co-butylene terephthalate) (PBAT), poly(butylene succinate-co-butylene adipate) (PBSA), and olive oil media plates. Relatively higher P(3HB) hydrolytic activity was observed in the culture supernatant under the co-existence of P(3HB) and the cheese, suggesting that a component of the cheese plays an important role in the hydrolytic activity. These results indicate that microbiota in fermented foods such as cheese can degrade biodegradable plastics, thereby reducing their quality. Therefore, because P(3HB) may be degraded by the microbiota present in cheese, these findings may affect the application of P(3HB) in cheese packaging. 相似文献