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Dissertations / Theses on the topic 'Recycled low density polyethylene'

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Published: 4 June 2021

Last updated: 26 July 2025

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1

Nolutshungu, Lita. "A laboratory investigation on the shear strength characteristics of soil reinforced with recycled linear low-density polyethylene." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29304.

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Since the development of plastics in the 1930’s, plastics have increasingly become widely used for packaging in the commercial market place. With this application being for immediate disposal, the amount of plastic waste generated presents a challenge in the disposal thereof. The risks associated with non-biodegradable products on humans and animal life, pressure on existing landfills and the increasing costs thereof have necessitated the development of alternative options for waste management over the years. Research has resulted in various forms of treatments and recycling processes adopted

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2

Fraga, Isabel Matos. "Aproveitamento de Carepa e E-cat no desenvolvimento de comp?sitos de polietileno reciclado e modificado com agentes oxidantes." Universidade Federal Rural do Rio de Janeiro, 2010. https://tede.ufrrj.br/jspui/handle/jspui/1976.

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Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-08-18T17:45:44Z No. of bitstreams: 1 2010 - Isabel Matos de Fraga.pdf: 5201934 bytes, checksum: 6bbaeba09901aea4cbaa9f69dbb0402e (MD5)<br>Made available in DSpace on 2017-08-18T17:45:44Z (GMT). No. of bitstreams: 1 2010 - Isabel Matos de Fraga.pdf: 5201934 bytes, checksum: 6bbaeba09901aea4cbaa9f69dbb0402e (MD5) Previous issue date: 2010-12-08<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil.<br>The researches on recycling of industrial wastes has been stepped up around the world to enhance the quality of t

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3

Santos, C?ssia Thais Silva. "Obten??o de blendas polim?ricas a partir da reciclagem de sucatas de aparelhos celulares e polietileno de baixa densidade reciclado." Universidade Federal Rural do Rio de Janeiro, 2016. https://tede.ufrrj.br/jspui/handle/jspui/1736.

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Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-06-06T11:42:39Z No. of bitstreams: 1 2016 - C?ssia Thais Silva Santos.pdf: 4767415 bytes, checksum: 7078f4a6b3c6455dd65b9fa432b3a6ff (MD5)<br>Made available in DSpace on 2017-06-06T11:42:39Z (GMT). No. of bitstreams: 1 2016 - C?ssia Thais Silva Santos.pdf: 4767415 bytes, checksum: 7078f4a6b3c6455dd65b9fa432b3a6ff (MD5) Previous issue date: 2016-07-20<br>It is crescent the research by new materials and methods for creating and same market insertion. Currently, among the various types of waste, electronic waste is considered obsole

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4

Domingos, Luanda Gomes. "O efeito do tratamento da atapulgita no desenvolvimento de comp?sito com o polietileno reciclado." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12757.

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Made available in DSpace on 2014-12-17T14:07:03Z (GMT). No. of bitstreams: 1 LuandaGD_DISSERT.pdf: 2374976 bytes, checksum: 5b49cc11854aa2427f22f38d6ff109c2 (MD5) Previous issue date: 2012-08-24<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>The study aimed at the treatment of attapulgite for the development and characterization of composite recycled low density polyethylene - PEBD_rec embedded with natural attapulgite - ATP_NAT, sifted - ATP_PN and attapulgite treated with sulfuric acid - ATP_TR in different compositions (1, 3 and 5%) and compared with the PEBD_rec. The

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5

Parmar, Harisinh, and h_arzoo@yahoo com. "Rheology Of Peroxide Modified Recycled High Density Polyethylene." RMIT University. Civil, Environmental and Chemical Engineering, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080724.164249.

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Consumption of plastics has increased exponentially, in line with the world's population. Not surprisingly this is reflected in enormous growth of the plastic industry especially during the last five decades. Commensurate with this, waste produced from plastics consumption has created a major environmental problem. Many types of waste disposal methods have been used all over the world so far, but all of them have disadvantages. Furthermore, some methods are responsible for the generation of green house gases and further contribution to global warming. Recently, reduction of green house gas emi

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6

Siskind, Esther. "Market development for recycled high density polyethylene (HDPE)." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/70176.

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7

Mizutani, T., H. Semi, and K. Kaneko. "Space charge behavior in low-density polyethylene." IEEE, 2000. http://hdl.handle.net/2237/6796.

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8

Yiangou, Savvakis Chrysostomou. "Fatigue crack propagation in low density polyethylene." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47317.

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9

Altintas, Bekir. "Electrical And Mechanical Properties Of Carbon Black Reinforced High Density Polyethylene/low Density Polyethylene Composites." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12604976/index.pdf.

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In this study, the High Density Polyethylene (HDPE) and Low Density Polyethylene (LDPE) blends prepared by Plasticorder Brabender were strengthened by adding Carbon Black (CB). Blends were prepared at 190 &deg<br>C. Amounts of LDPE were changed to 30, 40, 50 and 60 percent by the volume and the percent amounts of CB were changed to 5, 10,15, 20 and 30 according to the total volume. Thermal and morphological properties were investigated by using Differential Scanning Calorimeter (DSC), Scanning Electron Microscope (SEM). Mechanical properties were investigated by tensile test and hardness mea

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10

Isik, Coskunses Fatma. "Ternary Nanocomposites Of Low Density,high Density And Linear Low Density Polyethylenes With The Compatibilizers E-ma_gma And E-ba-mah." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613294/index.pdf.

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The effects of polyethylene, (PE), type, compatibilizer type and organoclay type on the morphology, rheological, thermal, and mechanical properties of ternary low density polyethylene (LDPE), high density polyethylene (HDPE), and linear low density polyethylene (LLDPE), matrix nanocomposites were investigated in this study. Ethylene &ndash<br>Methyl acrylate &ndash<br>Glycidyl methacrylate terpolymer (E-MAGMA) and Ethylene &ndash<br>Butyl acrylate- Maleic anhydrate terpolymer (E-BA-MAH) were used as the compatibilizers. The organoclays selected for the study were Cloisite 30B and Nanofil 8. Na

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11

Karl, Michelle Marie. "Modelling the viscoelastic properties of low density polyethylene." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0013/MQ52585.pdf.

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12

Rabie, Allan John. "Blends with low-density polyethylene (LDPE) and plastomers." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49870.

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Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: This study describes the design, building and optimization of a fully functional preparative TREF (Prep-TREF) apparatus. This apparatus allows for the fractionation of semicrystalline polyolefins according to the crystallizability of the molecules. Various factors, such as the sample cooling rate and the effect of on-support and off-support crystallization, are investigated. The preparative TREF is used to fractionate a commercial low-density polyethylene (LOPE), two commercially available plastomers (polyethylene-l-octen

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13

Mizutani, T., H. Semi, K. Kaneko, T. Mori, and M. Ishioka. "Space Charge and Field Distributions in Low-Density Polyethylene." IEEE, 2000. http://hdl.handle.net/2237/7178.

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14

Feng, Lijun 1966. "Melting and crystallization behavior of linear low-density polyethylene." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=86069.

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The melting and crystallization behavior of linear low-density polyethylene (LLDPE) is of great scientific and industrial importance. It depends strongly on polymer molecular structural characteristics and processing conditions, and determines polymer application properties. In this work, we study three different types of LLDPE polymers: metallocene-based LLDPEs (m-LLDPEs), Ziegler-Natta-based LLDPEs (ZN-LLDPEs), and m-LLDPE blends.<br>A generalized equation is introduced to clarify conceptual definitions of polymer melting temperatures. It incorporates the effects of comonomer volume,

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15

Burnett, Connah Andrew. "Radical block copolymers of linear low density polyethylene macromonomers." Thesis, University of Warwick, 2018. http://wrap.warwick.ac.uk/106401/.

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Chapter 1 introduces the concept of wax crystal modification in middle distillate fuels and reviews the more common chemical additives used commercially, and by examination of the advantages and drawbacks of these additives discusses the possible benefits of polyolefin block copolymers. From this end functionalisation of polyethylene (PE) as a route to block copolymers is reviewed from different literature methods for their synthesis. Chapter 2 introduces the catalytic hydride insertion polymerisation mechanism as a route to end functional polyolefins and goes on to focus on the production of

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16

Sworen, John Christopher. "Modeling linear-low density polyethylene copolymers containing precise structures /." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0006610.

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17

Brunson, Jerilyn. "Hopping Conductivity and Charge Transport in Low Density Polyethylene." DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/562.

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The properties and behaviors of charge transport mechanisms in highly insulating polymers are investigated by measuring conduction currents through thin film samples of low density polyethylene (LDPE). Measurements were obtained using a constant voltage method with copper electrodes inside a chamber adapted for measurements under vacuum and over a wide range of temperatures and applied fields. Field-dependent behaviors, including Poole-Frenkel conduction, space charge limited current (SCLC), and Schottky charge injection, were investigated at constant temperature. These field-dependent mech

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18

Shao, Susan X. "Application of finite element analysis (FEA) to fiber-reinforced composite of recycled high density polyethelene /." View online, 1993. http://repository.eiu.edu/theses/docs/32211998853201.pdf.

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19

Kaneko, K., H. Semi, T. Mizutani, T. Mori, and M. Ishioka. "Charge Transport and Space Charge Formation in Low-Density Polyethylene." IEEE, 2000. http://hdl.handle.net/2237/7177.

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20

Taniguchi, Yoshihide, Kazue Kaneko, Teruyoshi Mizutani, and Mitsugu Ishioka. "Space Charge in Low Density Polyethylene Prepared by Metallocene Catalyst." IEEE, 2001. http://hdl.handle.net/2237/7164.

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21

Hori, T., K. Kaneko, T. Mizutani, and M. Ishioka. "Space charge distribution in low-density polyethylene with blocking layer." IEEE, 2003. http://hdl.handle.net/2237/7165.

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22

Xu, Zhiqiang. "Space charge measurement and analysis in low density polyethylene films." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/69927/.

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The growing requirement of reliability for an insulation system gives researchers greater responsibility to investigate new techniques for monitoring and diagnosing dielectrics subjected to an electric field. It is well known that the presence of space charge is one of the important factors causing premature failure of polymeric high voltage cables. Space charge surveillance is becoming the most general applied skill to evaluate polymeric materials, particularly high voltage cables. The well-known pulsed electroacoustic method (PEA), a reliable non-destructive method, gives a reasonable resolu

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23

Häfele, Martin. "Modelling and analysis of a production plant for low density polyethylene." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=983643849.

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24

Dogan, Erkan. "Ter Blend Of Poly (ethylene Terephthalate), Polypropylene And Low Density Polyethylene." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/4/1045574/index.pdf.

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This study covers the recycling of waste poly(ethylene terephthalate) (PET) bottles through melt blending with low density polyethylene (LDPE) and polypropylene (PP). In general, polymer blends are known to be immiscible and incompatible with poor mechanical properties. This problem is due to the low intermolecular forces between the components of the immiscible blends. In order to enhance the interaction and compatibility between these matrices, some reactive or non-reactive copolymers were used. In this work<br>PET was treated with silane coupling agent (SCA) (low molecular weight reactive a

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25

Mizutani, Teruyoshi, Kenta Shinmura, Yoshihide Taniguchi, Kazue Kaneko, and Mitsugu Ishioka. "Effect of Anti-Oxidants on Space Charge in Low-Density Polyethylene." IEEE, 2001. http://hdl.handle.net/2237/7171.

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26

Pena, Vivar Jose Miguel. "Interactions of carbon black with stabilisers in low density polyethylene stabilisation." Thesis, Manchester Metropolitan University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324004.

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27

Ellis, Vibhootr. "A study of the rotational moulding of linear low density polyethylene." Thesis, De Montfort University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685933.

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28

Mohammadi, Hadi. "On the Melting and Crystallization of Linear Polyethylene, Poly(ethylene oxide) and Metallocene Linear Low-Density Polyethylene." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/84921.

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The crystallization and melting behaviors of an ethylene/1-hexene copolymer and series of narrow molecular weight linear polyethylene and poly(ethylene oxide) fractions were studied using a combination of ultra-fast and conventional differential scanning calorimetry, optical microscopy, small angle X-ray scattering, and wide angle X-ray diffraction. In the case of linear polyethylene and poly(ethylene oxide), the zero-entropy production melting temperatures of initial lamellae of isothermally crystallized fractions were analyzed in the context of the non-linear Hoffman-Weeks method. Using the

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29

Coppard, Robert William. "Contamination and fine melt filtration of low density polyethylene power cable insulation." Thesis, Brunel University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253456.

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30

Oldervoll, Frøydis. "Electrical and Thermal Ageing of Extruded Low Density Polyethylene Insulation Under HVDC Conditions." Doctoral thesis, Norwegian University of Science and Technology, Department of Electrical Power Engineering, 2000. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-208.

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<p>After extensive research during the last decades extruded polymeric insulation is now becoming an alternative to the traditional oil-paper systems for high voltage DC (HVDC) cables. Durability is of great importance for power cables, and the main purpose of this work has been to increase the knowledge of factors controlling the endurance of an extruded polymeric insulation under HVDC conditions. The effect of electrical and thermal ageing on electrical properties like space change accumulation, DC breakdown strength and electrical tree initiation has been investigated and related to changes

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31

Singh, Priti. "Morphology and rheology of binary blends of polypropylene and linear low density polyethylene." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ49686.pdf.

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32

GOMES, BRUNA MARIA DA CUNHA. "PRODUCTION AND CHARACTERIZATION OF LOW DENSITY POLYETHYLENE FILMS REINFORCED WITH TIO2 BASED NANOMATERIALS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21691@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>Materiais plásticos são largamente utilizados em nosso dia-a-dia em embalagens, sacos e outros produtos. Este tipo de material é utilizado devido a suas propriedades como baixo custo, fácil processabilidade, baixa densidade, resistência a microorganismos e água, estabilidade química e durabilidade. Devido às duas últimas propriedades, os polímeros apresentam baixa degradabilidade, causando problemas ambientais. Como óxido de titânio (TiO2) tem se apresentado eficiente como fotocatalisador, reforçar plástico com partículas deste m

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33

Keulder, L. "The effect of molecular composition on the properties of linear low density polyethylene." Thesis, Stellenbosch : University of Stellenbosch, 2008. http://hdl.handle.net/10019.1/2929.

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Thesis (MSc (Chemistry and Polymer Science))--University of Stellenbosch, 2008.<br>In this study linear low density polyethylene (LLDPE), a copolymer consisting of ethylene and 1-butene, was fractionated by the use of temperature rising elution fractionation (TREF). These fractions were then analyzed by crystallisation analysis fractionation, 13C NMR, high temperature size exclusion chromatography and DSC. The molecular distribution of the polymer was investigated. It was found that the polymer had a very broad distribution in its chemical composition. From these results it was also clear that

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34

Hussin, Nuriziani. "The effects of crosslinking byproducts on the electrical properties of low density polyethylene." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/201957/.

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Crosslinked polyethylene (XLPE) is widely used for high voltage insulation in power transmission systems. However, it has been found that, after crosslinking with Dicumyl Peroxide (DCP), the crosslinking byproducts such as acetophenone, α-methylstyrene and cumyl alcohol have a significant influence on electrical properties of XLPE power cables. This thesis distinguished the individual contribution of the crosslinking byproducts on space charge formation, dielectric properties, dc conductivity as well as the ac breakdown strength. Percentage weight increases as well as the Fourier Transform Inf

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35

Moynihan, Randall H. "The flow stability of linear low-density polyethlene at polymer and metal interfaces." Diss., This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07132007-143144/.

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36

Isik, Fatma. "Nanocomposites Based On Blends Of Polyethylene." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/3/12606338/index.pdf.

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In this study the effects of compatibilizer type, organoclay type, and the addition order of components on the morphological, thermal, mechanical and flow properties of ternary nanocomposites based on low density polyethylene, LDPE were investigated. As compatibilizer, ethylene/methyl acrylate/glycidyl methacrylate, ethylene/glycidyl methacrylate, and ethylene/butyl acrylate/maleic anhydride<br>as organoclay Cloisite&amp<br>#61666<br>15A, Cloisite&amp<br>#61666<br>25A and Cloisite&amp<br>#61666<br>30B were used. All samples were prepared by a co-rotating twin screw extruder, followed by inject

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37

Yilmaz, Gokhun. "Effects Of Titanate Coupling Agents On Low Density Polyethylene And Polypropylene Blends And Composites." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610135/index.pdf.

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The objective of this study is to investigate the effects of titanate coupling agents on low density polyethylene (LDPE) and polypropylene (PP) blends and composites in terms of their mechanical and morphological properties. PP and LDPE composites were produced separately in a Brabender internal mixer, and CaCO3 was used as inorganic filler with compositions of 20, 40 and 60 %. PP/LDPE blends were produced in a twin-screw extruder with ratios of 75/25, 50/50 and 25/75. Their composites were prepared with addition of untreated and titanate-treated CaCO3 at 20% filler content. Titanate couplin

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38

Matsunaga, Masashi. "Development of physico-chemical pretreatments to enhance the biodegradability of synthetic low-density polyethylene film." Thesis, University of Surrey, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343487.

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Azahari, Baharin Bin. "An investigation into the relationship between processing, orientation and properties of low density polyethylene films." Thesis, London Metropolitan University, 1990. http://repository.londonmet.ac.uk/2992/.

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The effect of changing processing conditions on the mechanical properties of LDPE, LLDPE and blends of LDPE and LLDPE blown films was studied. The results were analysed by relating the change in mechanical properties with the change in the residual strain of manufactured film. The residual strain was measured by using a shrinkage method.

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40

Bermingham, Siobhan Clara. "The effect of processing parameters on the properties of blown films produced from blends of a low density and a butene based linear low density polyethylene." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282120.

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41

Khatami, Hassan. "Influence of titanium dioxide pigments on the thermal and photochemical oxidation of low density polyethylene film." Thesis, Manchester Metropolitan University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283081.

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42

Tijen, Seyidoglu. "Purification And Modification Of Bentonite And Its Use In Polypropylene And Linear Low Density Polyethylene Matrix Nanocomposites." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612204/index.pdf.

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The potential use of Resadiye/Tokat bentonite as a reinforcement in polypropylene (PP) and linear low density polyethylene (LLDPE) polymer matrix nanocomposites filler was investigated. At first, organoclays (OC) were prepared by cation exchange reaction (CER) between the raw bentonite (RB) and three quaternary ammonium salts with long alkyl tails (QA): hexadecyl trimethyl ammonium bromide [HMA] [Br], tetrabutyl ammonium tetrafluoroborate [TBA] [BF4], tetrakisdecyl ammonium bromide [TKA] [Br] and one quaternary phosphonium (QP) salt: tetrabutyl phosphonium tetrafluroborate [TBP] [BF4]. Charact

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43

Zhou, Lucy Ying Jr. "Quantitative Analysis of Additives in Low Density Polyethylene Using On-line Supercritical Fluid Extraction /Supercritical Fluid Chromatography." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36786.

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<p>Polymer additives exemplify many classes of compounds which possess a wide variety of chemical (i.e., phenols, amides, esters) and physical (i.e., volatility, solubility) properties. They are incorporated into polyolefins and other such polymeric materials for a number reasons: (a) to prevent degradation by ultraviolet light, heat, and oxygen; (b) to aid in the processing of the polymer; and (c) to modify the physical properties of the polymer. Since the purity and amount of additive can affect polymer properties, it is very important to characterize and quantify additives in polymer produc

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44

Nagle, Dylan John. "Infrared spectroscopic investigation of the effects of titania photocatalyst on the degradation of linear low density polyethylene film for commercial applications." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/32077/1/Dylan_Nagle_Thesis.pdf.

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There is a need in industry for a commodity polyethylene film with controllable degradation properties that will degrade in an environmentally neutral way, for applications such as shopping bags and packaging film. Additives such as starch have been shown to accelerate the degradation of plastic films, however control of degradation is required so that the film will retain its mechanical properties during storage and use, and then degrade when no longer required. By the addition of a photocatalyst it is hoped that polymer film will breakdown with exposure to sunlight. Furthermore, it is desire

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45

Kodavati, Venkata Seshank, and Devi Prasad Buraga. "Study of Numerical Model Parameters and Crack Tip of a Packaging Materials." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13840.

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Packaging industries widely use Low-Density Polyethylene (LDPE) in manufacturing different types of containers to store the food products. They are difficult to model numerically in order to have similar experimental response. This research deals with the study of numerical material model parameters of continuum LDPE. It is carried out with the help of experiments along with the numerical simulation of LDPE. Study of stress-strain distribution at crack tip and elements close to the tip is carried out in the LDPE material with the pre-existing center crack with varying lengths. By implementing

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46

Li, Tao. "New compatibilizing agents for blends of linear low-density polyethylene and polystyrene as model systems of the post-consumer plastic waste stream." Case Western Reserve University School of Graduate Studies / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=case1061478646.

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47

Pirondelli, Andrea. "Production and Electrical Characterization of Low Density Polyethylene-based Micro- and Nano-dielectrics containing Graphene Oxide, Functionalized Graphene and Carbon Black additives." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.

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Oggigiorno la ricerca di nuovi materiali per gradatori di campo da impiegarsi in accessori di cavi ha iniziato a studiare alcuni materiali nano dielettrici con proprietà elettriche non lineari con la tensione ed aventi proprietà migliorate rispetto al materiale base. Per questo motivo in questo elaborato si sono studiati materiali nanostrutturati a base di polietilene a bassa densità (LDPE) contenenti nano polveri di grafene funzionalizzato (G*), ossido di grafene (GO) e carbon black (CB). Il primo obiettivo è stato quello di selezionare e ottimizzare i metodi di fabbricazione dei provini. La

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48

Naidoo, Preloshni. "A comparative analysis of the chemical composition of linear low density polyethylene polymers synthesised with 1- hexene comonomer under different catalytic conditions." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80272.

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Thesis (MSc)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: A comparative study of the chemical composition of linear low density polyethylene polymers, synthesised with 1 - hexene as comonomer was conducted. Catalyst trials were conducted on the linear low density 1 - hexene polymer grade material to evaluate alternative catalysts. A comparative analysis was performed in order to investigate if the samples synthesised under catalyst trial conditions showed any significant differences in terms of crystallinity and mechanical properties with the reference sample that was synthesised using

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Yoo, SeungRan. "The effect of high pressure processing on the mass transfer of Irganox 1076 in low-density polyethylene films and in 95% ethanol as a food simulant." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1181749497.

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Peiti, Christian. "Modification des propriétés rhéologiques des polymères branchés par traitement thermomécanique : application aux défauts d'extrusion des PEBD." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00820611.

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L'objectif de cette thèse est d'observer la modification du comportement rhéologique dedifférents polyéthylènes branchés, suite à un traitement de cisaillement. Après avoir décrit lesmatériaux et les moyens utilisés, nous avons caractérisé le plus complètement possible lecomportement rhéologique des différents matériaux, aussi bien en cisaillement qu'en élongation.Nous avons également déterminé des données calorimétriques et des informations sur lescaractéristiques moléculaires, permettant entre autres de définir la masse entre enchevêtrements.Nous avons ensuite mesuré l'évolution de la viscos

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