| 来源类型 | Article
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| 规范类型 | 论文
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| Turning plastic on its head |
| Ms Aastha Manocha
|
| 发表日期 | 2018-01-29
|
| 出版年 | 2018
|
| 语种 | 英语
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| 概述 | Resource Efficient Technologies in SRC has been working on making plastic environment-friendly |
| 摘要 | Resource Efficient Technologies in SRC has been working on making plastic environment-friendly\n\nThe resource efficient technologies (RET) group in SRC focuses mainly on the development of environment-friendly plastics with a special emphasis on biomaterials, using naturally available renewable resources. The group works on the following thrust areas to be able to come up with ways to meet the challenge of consumption and disposal of the seemingly indestructible material.\n\nBiodegradable Plastics\n\nTwo kinds of biodegradable plastics have been developed 鈥?synthetic polymer blends with natural biopolymer such as starch and cellulose etc. and fully biodegradable plastic (no synthetic polymer). Biodegradability of these bio-based composites was enhanced by increasing the content of biopolymers. The mechanical properties of these bio-based composites were almost at a par with neat synthetic polymers.\n\n\n\n\n\n\n\nCompression moulded cutlery items from biodegradable nanocomposites\n\n\n\n\n\n\nBio-based plastics consisting of starch derivatives loaded with 20 and 30 per cent polyethylene\n\n\nSalient Features\n\n\n\t\t\tSynthetic and bio-polymeric composites\n\t\t\t\n\t\t\t\n\t\t\tCompletely bio-based nanocomposites\n\t\t\t\n\t\t\n\t\t\tBiodegradability of these partially bio-based composites was enhanced by increasing the content of biopolymers\n\t\t\t\tThe mechanical properties of these bio-based composites were almost at a par with neat synthetic polymers\n\t\t\t\tCan be upscaled with the standard infrastructure with minimal add-ons\n\t\t\t\tEnvironment friendly\n\t\t\t\n\t\t\t\n\t\t\tRenewable. Made from biomass i.e. trees, plants, grass or organic materials that can decompose\n\t\t\t\tSustainable alternative to petrochemical-based plastics\n\t\t\t\tNon-toxic, unlike traditional plastics that release harmful by-products during the breakdown process\n\t\t\t\tCompletely biodegradable and environment-friendly\n\t\t\t\n\t\tSuperabsorbent materials\n\nSuperabsorbent nanomaterials are developed using bio-based polymers. They can absorb and retain extremely large amounts of a liquid relative to their own mass. They can be sustainable alternatives to petrochemical-based superabsorbent materials and find application in removal of toxic dyes and heavy metals from industrial waste water, in controlled release of insecticides and herbicides and in medical applications such as controlled drug release and wound dressing.\n\n\n\n\n\n\n\nRemoval of toxic dyes after 24 hours using superabsorbent materials\n\n\n\n\n\n\nAntiseptic herbal extract encapsulated in biopolymer beads that can be used for wound dressing\n\n\nFire retardant nanocomposites\n\nFire retardant nanocomposites have been developed using recycled commingled plastic waste with non-halogenated fire-retardant additives (as commonly used FR additives are halogenated and can release toxins) and nanofillers as reinforcement. These nanocomposites are environment-friendly plastics and can find application in various fields such as making of panels, furniture and other possible building materials apart from packaging for storage and transport of non-food products.\n\nSalient features\n\nMixture of comingled plastic waste consisting of Polyethylene, Polypropylene etc. can generate value-added products that can be used in the manufacture of toys, furniture, panels, enclosures etc.\n\tHave the twin advantages of improved strength and being fire-retardant\n\tCan be easily implemented by industries manufacturing recycled products without altering their existing infrastructure\n\n\n\n\n\n\nNo char formation from pure polymer\n\n\n\n\n\n\nChar formation from nanocomposites which aids in fire retardants\n\n\nBiomedical nanocomposites\n\nThe group has developed biocompatible nanocomposites using nanohydroxyapatite that can be used as bone implants. Mechanical properties of these nanocomposites are similar to that of the human bone.\n\nSalient features\n\nBiocompatible\n\tMechanical properties can be tailored as per requirements\n\tImmersion in Synthetic Body Fluid showed appetite formation similar to bone\n\tSome of these are completely bio-based\n\tPreliminary studies don't show cytotoxicity\nPolymer processing and testing laboratory\n\nThe group is also equipped with sophisticated and versatile testing equipment for polymer processing and testing services as per standard test procedures. The main objective of their laboratory is to provide cost-effective analytical services, research and development studies for industries, research and development activity for academic institutes and other in-house research activities.\n\nGlossary\n\nSynthetic polymer - Plastics made from petrochemical resources\nBiopolymer - Polymers derived from renewable sources\nNanocomposites - Polymer composites consisting of nano-sized particles\nHalogenated fire retardant additives - Additives that release toxic sulphur by-products during combustion\nSynthetic Body Fluid - Solution with ion concentration similar to that of human bodily fluids\nCytotoxicity - Toxicity to living cells |
| 主题 | Resource Efficiency & Security
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| URL | https://www.teriin.org/article/turning-plastic-its-head
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| 来源智库 | Energy and Resources Institute (India)
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/98043
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GB/T 7714 |
Ms Aastha Manocha. Turning plastic on its head. 2018.
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