Search for dissertations about: "plastics"

Showing result 1 - 5 of 166 swedish dissertations containing the word plastics.

2. 1. Electronic Waste Plastics Characterisation and Recycling by Melt-processing

   Author : Erik Stenvall; Chalmers University of Technology; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; melt-blending; WEEE; ternary polymer blend; processing conditions; plastics recycling; composition analysis; e-waste;

   Abstract : Melt-processing of blended plastics from waste electrical and electronic equipment (WEEE) is a method to facilitate mechanical recycling, and this might improve the recycling conditions and increase the amounts of plastics being recycled. To ensure the quality of melt-blended plastic waste, it is essential to know the composition of the incoming material and then possibly improve the compatibility between the different polymer phases. READ MORE

4. 2. Separation of plastics by flotation

   Author : Huiting Shen; Luleå tekniska universitet; []
   Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

   Abstract : This thesis analyses and summarises the importance of plastics waste recycling and plastics waste separation, presents an innovative principle for plastics flotation, and provides various methods for the separation of plastics mixtures. The objective is to understand the mechanisms for selective flotation separation of plastics, get plastics mixtures separated and enable more plastics wastes to be recycled. READ MORE

5. 3. Gamma irradiation in multi-cycle ABS recycling- effects on ABS properties and the recovery of antimony

   Author : Sandra Tostar; Chalmers University of Technology; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ABS; antimony; gamma irradiation; recycling; WEEE; plastics;

   Abstract : Electronic waste, also called waste electrical and electronic equipment (WEEE), is the fastest growing waste stream in Europe today. The fast exchange pace of mobile phones, televisions and computers creates an important need to develop recycling areas to take care of, reuse and recycle these materials. READ MORE

6. 4. Environmental and health hazards of chemicals in plastic polymers and products

   Author : Delilah Lithner; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
   Keywords : plastics; plastic products; plastic polymers; consumer products; environmental hazards; environment; health hazards; human health; hazard ranking; hazard assessment; chemical ranking; hazard identification; hazard classifications; hazardous chemicals; hazardous substances; toxic substances; monomers; polymers; toxicity; acute toxicity; toxicity tests; Daphnia magna; Toxicity Identification Evaluation; TIE; leaching; leachates; product leachates; leaching tests; plastic materials; plastic;

   Abstract : Plastics are extremely diverse in terms of chemical composition, properties and possible applications, and are widely distributed in the society and the environment. In the last 15 years the global annual production has doubled, reaching 245 million tons in 2008. READ MORE

7. 5. Life cycle assessment of renewable-based hydrocarbon plastics

   Author : Christin Liptow; Chalmers University of Technology; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; renewable LDPE; biomass-based plastics; simplified LCA for conventional; LCA and process simulation;

   Abstract : Plastics are an important commodity of our daily life. And although their majority is still based on fossil feedstocks, numerous efforts are made to stem the environmental consequences related to their production. One approach is the use of renewable materials (biomass) to produce today’s conventional plastics. READ MORE