Log in

Relevant bibliographies by topics / Thermoplastic starch / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Thermoplastic starch.

Dissertations / Theses on the topic 'Thermoplastic starch'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Thermoplastic starch.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Ha, Seung-kyu. "Starch incorporated polymerization of thermoplastic polyurethan." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965659852.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Lescher, Peter Edward. "Moulding of Water-Free Thermoplastic Starch Blends." Thesis, University of Auckland, 2010. http://hdl.handle.net/2292/6632.

Full text

Abstract:

Thermoplastic starch (TPS) is one of a number of biodegradable polymers which have become increasingly attractive in recent times as substitutes for petrochemicals. Starch is seen as particularly useful as both a low-cost filler and a promoter of biodegradation processes. A novel water-free TPS blend suitable for rotational moulding and other conventional thermoplastic manufacturing processes is presented here. A method for producing water-free TPS blends in a single extrusion with commodity polymer processing equipment has been developed. Selected mechanical properties of blends with a rotomo

APA, Harvard, Vancouver, ISO, and other styles

3

Gilfillan, William N. "Developing starch-based polymer composites." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/86612/6/William_Gilfillan_Thesis.pdf.

Full text

Abstract:

This project aim was to replace petroleum-based plastic packaging materials that pollute the environment, with biodegradable starch-based polymer composites. It was demonstrated that untreated sugar cane bagasse microfibres and unbleached nanofibres significantly improved the physical, mechanical and chemical properties of starch films, while thermal extrusion of starch with alcohol improved the stiffness and the addition of aconitic acid cross-linked the film making it moisture resistant and extensible.

APA, Harvard, Vancouver, ISO, and other styles

4

Szegda, Damian. "Experimental investigation and computational modelling of the thermoforming process of thermoplastic starch." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/3445.

Full text

Abstract:

Plastic packaging waste currently forms a significant part of municipal solid waste and as such is causing increasing environmental concerns. Such packaging is largely non-biodegradable and is particularly difficult to recycle or to reuse due largely to its complex compositions. Apart from limited recycling of some easily identifiable packaging wastes that can be separated economically, such as bottles, most packaging waste ends up in landfill sites. In recent years, in an attempt to address this problem in plastic packaging, the development of packaging materials from renewable plant resource

APA, Harvard, Vancouver, ISO, and other styles

5

Jadawi, Akram. "Expanded bio-thermoplastic foam obtained from starch : thermo-physical and mechanical characterizations." Rouen, 2014. http://www.theses.fr/2014ROUES019.

Full text

Abstract:

Les matériaux concernés sont issus de ressources renouvelables protéiniquement pauvres (amidon de farine de blé) qui sont extrudés pour différentes compositions et conditions d’extrusion. Le résultat est un polymère 100% naturel poreux en forme de tube présentant des propriétés mécaniques très sensibles aux conditions de préparation. L’objective générale de cette thèse est de développer un polymère biodégradable écologique qui pourra limiter la production des polymères issue du pétrole comme le Polystyrène expansé. Pour atteindre cet objectif, le matériau a été caractérisé en établissant la re

APA, Harvard, Vancouver, ISO, and other styles

6

Pecku, Suven. "The use of thermoplastic starch for the modification of hydrophilic breathable membranes." Diss., Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-06302009-175421/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Pontes, Barbara Regina Bouças. "Preparação e caracterização de termoplásticos a partir de amido de arroz." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-24072012-171908/.

Full text

Abstract:

O presente trabalho teve como proposta a preparação de amidos termoplásticos (TPS) e compósitos a partir de amido de arroz e subprodutos do processo de beneficiamento do arroz, no qual resulta em 20% de palha e 14% de grãos quebrados. Estudou-se o amido de arroz como nova fonte para preparação de termoplásticos, avaliou-se o efeito da incorporação de palha de arroz aos TPS a fim de superar as limitações apresentadas por estes tais como baixo desempenho mecânico e alta absorção de umidade, avaliou-se a possibilidade de preparação de termoplásticos diretamente dos grãos de arroz e quirera e inve

APA, Harvard, Vancouver, ISO, and other styles

8

Gonzalez, Inês Antunes. "Characterization of a biodegradable starch based film. Application on the preservation of fresh spinach." Master's thesis, ISA-UL, 2016. http://hdl.handle.net/10400.5/12114.

Full text

Abstract:

Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia - UL<br>The goal of the present study was the characterization of a biodegradable thermoplastic starch based wrap film (TPS), produced from Mater-Bi®, and its application on the preservation of ready prepared fresh-cut spinach, in parallel with the non-biodegradable polyvinyl chloride (PVC) wrap film. The TPS-based film presented a similar vapour adsorption (< 5%, dry basis) to the PVC film. In addition, the carbon dioxide and oxygen permeability was in the same range (TPS-based: PCO2 =34.6x10-17-76.1x10-17mol.m/m2sPa, PO2 =

APA, Harvard, Vancouver, ISO, and other styles

9

Winkler, Henning. "Synthese von thermoplastisch verarbeitbaren Fettsäure-Acylderivaten der Stärke und Proteine." Phd thesis, Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2014/7108/.

Full text

Abstract:

In den vergangenen Jahren wurden stetig wachsende Produktionskapazitäten von Biokunststoffen aus nachwachsenden Rohstoffe nverzeichnet. Trotz großer Produktionskapazitäten und einem geeigneten Eigenschaftsprofil findet Stärke nur als hydrophile, mit Weichmachern verarbeitete thermoplastische Stärke (TPS) in Form von Blends mit z. B. Polyestern Anwendung. Gleiches gilt für Kunststoffe auf Proteinbasis. Die vorliegende Arbeit hat die Entwicklung von Biokunststoffen auf Stärkebasis zum Ziel, welche ohne externe Weichmacher thermoplastisch verarbeitbar und hydrophob sind sowie ein mechanisches Eig

APA, Harvard, Vancouver, ISO, and other styles

10

Bergel, Bruno Felipe. "Espumas de amido termoplástico com recobrimentos de quitosana e poliácido láctico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/158326.

Full text

Abstract:

Embalagens de plástico expandido são utilizados como embalagens de alimentos, entre eles o poliestireno expandido (EPS). Suas principais características são a leveza e sua não biodegradabilidade. Estas embalagens geralmente são descartadas logo após o uso e geram grandes quantidades de resíduos. Espumas feitas a base de amido termoplástico (TPS) podem substituir o EPS nestes casos, pois são feitas a partir de fontes renováveis e são materiais biodegradáveis. Entretanto, embalagens de espuma TPS possuem grande afinidade pela água e isso consequentemente afeta seu uso. Uma forma de resolver este

APA, Harvard, Vancouver, ISO, and other styles

11

Ellingson, Jordan M. "Starch Resin Moisture Level Effect on Injection Molding Processability and Molded Part Mechanical Properties with Pure Starch Resin and Polymer Blends." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3782.

Full text

Abstract:

The current and forecasted global consumption of plastic packaging and products through the 21st century combined with the already reported and growing negative impact of plastics on the environment due to plastics being synthesized from nonrenewable resources that do not biodegrade is of serious concern. However, recent advances in starch technology including the development of thermoplastic starch (TPS) materials —polymers that are both renewable and biodegradable—have brought hope to reducing this impact. The mechanical properties of thermoplastic starch have often been improved by blending

APA, Harvard, Vancouver, ISO, and other styles

12

Angellier, Hélène. "Nanocristaux d'amidon de maïs cireux pour applications composites." Phd thesis, Université Joseph Fourier (Grenoble), 2005. http://tel.archives-ouvertes.fr/tel-00010699.

Full text

Abstract:

Une suspension aqueuse de nanocristaux d'amidon de maïs cireux est obtenue par hydrolyse acide de grains d'amidon (longueur:40-60nm, largeur:15-30nm, épaisseur:5-7nm). Le premier objectif de la thèse est l'optimisation de la préparation de ces nanocristaux par la mise en place d'un plan d'expériences. Leur structure moléculaire est ensuite étudiée par dégradation enzymatique, et leur modification chimique de surface est envisagée. Le deuxième objectif est l'utilisation de ces nanocristaux comme charge de renfort dans une matrice polymère. Deux polymères naturels ont été choisis: le latex de ca

APA, Harvard, Vancouver, ISO, and other styles

13

Mendes, Fernanda Miranda. "Produção e caracterização de bioplásticos a partir de amido de batata." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-11032010-104107/.

Full text

Abstract:

O presente trabalho teve por objetivo estudar o amido termoplástico (TPS) proveniente de batata e suas blendas com os polímeros biodegradáveis da classe dos poli (hidroxialcanoatos), como o homopolímero Poli (β-hidroxibutirato) (PHB) e o copolímero Poli (β-hidroxibutirato-co-valerato) (PHBV). Para tanto, foram desenvolvidas formulações de TPS, TPS/PHB, TPS/PHBV, TPS/PHBV, TPS/PHB/PHBV e dos próprios polímeros. Os teores de poli(hidroxialcanoatos) nas misturas foram iguais a 25, 50 e 75%. O TPS e as blendas foram preparados via mistura física dos polímeros base com água e glicerol. O

APA, Harvard, Vancouver, ISO, and other styles

14

Jacob, Ricardo Francischetti. "\"Estudo das propriedades das blendas de amido termoplástico e látex natural\"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-26042007-090356/.

Full text

Abstract:

Este trabalho tem como objetivos a preparação e a caracterização de blendas de amido termoplástico e borracha natural, obtidos a partir dos amidos de mandioca e milho e do látex de borracha natural utilizado diretamente como extraído da seringueira, sem nenhum tipo de tratamento prévio. Os amidos termoplásticos (TPS) foram processados em misturador intensivo em duas temperaturas diferentes (120oC e 150oC), utilizando como plasticizantes a glicerina, o etilenoglicol e o propilenoglicol na proporção de 30 % em massa na matriz, e teores de látex de borracha natural (NRL) variando na proporção de

APA, Harvard, Vancouver, ISO, and other styles

15

Bacigalupi, Bradley Dale. "Characterization and Processing Evaluation of Starch/High-Density Polyethylene Materials in Extrusion Blow Molding." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/4306.

Full text

Abstract:

The growing negative impacts of non-biodegradable plastics derived from non-renewable materials have created increasing interest throughout the world for new materials that are both biodegradable and renewable, that can be combined with or replace traditional plastics. Plant-based thermoplastic starch (TPS), a promising alternative material to traditional petroleum based resin, is both biodegradable and renewable and has great potential for use in plastic manufacturing processes. Two major obstacles that prevent more widespread use of TPS include; TPS base material, which is typically manufact

APA, Harvard, Vancouver, ISO, and other styles

16

Fakhouri, Farayde Matta. "Bioplasticos flexiveis e biodegradaveis a base de amido e gelatina." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256348.

Full text

Abstract:

Orientadores: Fernanda Paula Collares Queiroz, Lucia Helena Innocentini Mei<br>Tese (doutorado) - Universidade Estadual dse Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-12T14:25:27Z (GMT). No. of bitstreams: 1 Fakhouri_FaraydeMatta_D.pdf: 8442121 bytes, checksum: 0c402098c4f41a7575fbfc8ec41dc913 (MD5) Previous issue date: 2009<br>Resumo: O objetivo deste trabalho foi desenvolver um bioplástico flexível, biodegradável e comestível, à base de polímeros naturais de fontes renováveis (amido e gelatina) por processo de extrusão termoplástica seguido de sop

APA, Harvard, Vancouver, ISO, and other styles

17

Mikus, Pierre-Yves. "Etude des relations structure-propriétés de matériaux à base d'amidon : effet d'orientation et d'irradiation sous faisceau d'électrons." Thesis, Reims, 2011. http://www.theses.fr/2011REIMS038/document.

Full text

Abstract:

Ce travail s'inscrit dans la démarche générale de compréhension et d'amélioration des propriétés mécaniques des matériaux thermoplastiques amylacés, en proposant une nouvelle démarche originale de modification structurale de l'amidon thermoplastique s’appuyant sur la combinaison de deux techniques: la réticulation de l'amidon sous faisceau d’électrons et l'orientation macromoléculaire issue du procédé de transformation par extrusion. La première partie du manuscrit est consacrée aux propriétés thermomécaniques de l’amidon plastifié et propose notamment une mise à jour de la courbe maitresse co

APA, Harvard, Vancouver, ISO, and other styles

18

Alves, Ana Clara Lancarovici. "Blendas de amido termoplástico e poli (álcool vinílico-co-etileno)." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-16042018-093610/.

Full text

Abstract:

O crescente uso do amido como um material termoplástico tem despertado o interesse por esse polímero especialmente devido sua biodegradabilidade e por ser obtido de fontes renováveis. Porém suas propriedades mecânicas inferiores e a alta sensibilidade a umidade têm limitado sua utilização em diversas aplicações. O desenvolvimento de blendas poliméricas tem sido uma boa alternativa para obtenção de novos materiais à base de amido com suas propriedades melhoradas. Blendas de amido termoplástico (TPS) e poli(álcool vinílico-co-etileno) (EVOH), com 27 e 44%mol de etileno, foram obtidas em uma extr

APA, Harvard, Vancouver, ISO, and other styles

19

Mota, Eliane Neves da. "Desenvolvimento de sistema ligante para processamento de alumina por injeção a partir de polímeros de fontes renováveis." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108379.

Full text

Abstract:

Neste trabalho, inicialmente, foram obtidos TPSs (amidos termoplásticos) com diferentes concentrações de amido e plastificantes, por processamento em câmara de mistura, com o objetivo de determinar formulações para estudo em extrusora reativa. As formulações de TPS que apresentaram os melhores resultados de torque reométrico foram as que continham 39%m/m de amido. Investigou-se a influência da velocidade da rosca na obtenção de TPS por extrusora reativa, e os resultados mostraram que este parâmetro teve pequena influência na estabilidade do amido termoplástico, sendo possível utilizar 150 rpm

APA, Harvard, Vancouver, ISO, and other styles

20

Teixeira, Ângela Moraes. "Nanocompósitos de argila montmorilonita, amido, gelatina, isolado protéico de soja e quitosana." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256343.

Full text

Abstract:

Orientador: Fernanda Paula Collares Queiroz<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-17T11:55:39Z (GMT). No. of bitstreams: 1 Teixeira_AngelaMoraes_D.pdf: 4341295 bytes, checksum: a6815c55cbc9aed051c39caf022ef41c (MD5) Previous issue date: 2011<br>Resumo: Neste trabalho foram desenvolvidos nanocompósitos de amido de milho, gelatina, isolado protéico de soja, quitosana e argila montmorilonita para aplicação em embalagens alimentícias. Para avaliar o efeito da concentração de argila montmorilonita sódic

APA, Harvard, Vancouver, ISO, and other styles

21

Oliveira, Camila Fernanda de Paula. "Obtenção e caracterização de amido termoplástico e de suas misturas com polipropileno." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-16062016-101007/.

Full text

Abstract:

Este trabalho está dividido em: obtenção e caracterização de amido termoplástico (TPS); estudo do envelhecimento do TPS e blendas de PP/TPS. O estudo do TPS, foi realizado utilizando amido de milho, 30% em massa de glicerol e outros componentes que variam entre as amostras. Primeiramente foi realizado um planejamento estatístico para obter a composição ótima de TPS. Foram escolhidos cinco parâmetros de entrada: 2 de composição (umidade e teor de ácido cítrico) e 3 de processamento (temperatura, velocidade dos rotores e tempo), visando obter um TPS com propriedades térmicas e mecânicas superior

APA, Harvard, Vancouver, ISO, and other styles

22

Nossa, Tamires de Souza. "Novas composições poliméricas obtidas a partir da modificação do amido via extrusão reativa." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-09012015-104750/.

Full text

Abstract:

O amido termoplástico (TPS) é um material biodegradável, de baixo custo, com grande potencial para aplicação na composição de plásticos biodegradáveis. Muitos estudos têm sido realizados no sentido de melhorar algumas de suas propriedades, principalmente a sua baixa resistência mecânica, elevada hidrofilicidade, e baixa miscibilidade com polímeros comerciais, fatores que dificultam a ampliação da utilização desse material como plástico biodegradável. Uma alternativa para melhorar tais propriedades, é a produção de blendas destes materiais com outros polímeros. Contudo, quando a natureza químic

APA, Harvard, Vancouver, ISO, and other styles

23

Aldas, Carrasco Miguel Fernando. "Uso de derivados de colofonia como aditivos sostenibles en biopolímeros de almidón termoplástico (TPS)." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/171770.

Full text

Abstract:

[ES] La Tesis Doctoral investigó el uso de la resina de pino (colofonia o gum rosin, GR) y sus derivados modificados químicamente, como aditivos sostenibles de biopolímeros basados en almidón termoplástico. El trabajo se dividió en seis secciones de investigación. Dos trabajos previos y cuatro trabajos medulares, cada uno de los cuales constituyeron los objetivos específicos de la investigación. Los trabajos previos permitieron determinar que la resina de pino y derivados pueden ser utilizados tanto en matrices poliméricas sintéticas (policloruro de vinilo, PVC), como en matrices poliméricas b

APA, Harvard, Vancouver, ISO, and other styles

24

Martins, Andréa Bercini. "Efeito de ácidos carboxílicos em blendas de polipropileno e amido termoplástico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/135395.

Full text

Abstract:

Neste trabalho, blendas de polipropileno/amido termoplástico (PP/TPS) foram preparadas como um material alternativo para uso em embalagens descartáveis. Este material apresenta características morfológicas típicas de blendas imiscíveis e um agente compatibilizante é necessário. Para obter o amido termoplástico (TPS), amido de milho foi misturado com glicerol, na proporção amido/glicerol de 70/30 m/m. As blendas PP/TPS com e sem agentes compatibilizantes foram produzidas em extrusora dupla rosca. Utilizou-se como agentes compatibilizantes naturais (ACN) três diferentes ácidos carboxílicos: mirí

APA, Harvard, Vancouver, ISO, and other styles

25

Burns, Mara Georgieva. "Mechanical properties and compostability of injection-moulded biodegradable compositions." Diss., Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-01192009-093817/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Sagar, Ambuj Daya. "Modification and characterization of starches and starch-based blends for use as environmentally biodegradable thermoplastics." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11648.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Teyssandier, Fabien. "Formulation et morphologies de mélanges de polymères thermoplastiques à base d'amidon." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00708484.

Full text

Abstract:

L'objectif de cette thèse est le développement de matériaux polymères injectables innovants issus de ressources renouvelables et répondant aux exigences techniques automobiles. Pour cela nous nous sommes intéressés à des mélanges de polymères modèles : le polyamide 12 et l'amidon plastifié. Nos travaux ont donc porté sur l'optimisation des propriétés de ces mélanges, via le contrôle de la morphologie. Ainsi deux stratégies ont été envisagées : la compatibilisation du mélange grâce à deux agents réactifs et la modification des paramètres de mise en œuvre. Ces deux stratégies se sont révélées êt

APA, Harvard, Vancouver, ISO, and other styles

28

Tran, Kelly. "Hybride associant polymère biosourcé et un système renforçant les propriétés de tenues au feu : analyse de la morphologie des mélanges et de leur structure pour l'optimisation des propriétés fonctionnelles." Electronic Thesis or Diss., Lyon, 2021. http://www.theses.fr/2021LYSES017.

Full text

Abstract:

L’objectif de ces travaux de recherche est de développer un matériau hybride biopolymère/géopolymère ayant des bonnes propriétés de résistance et de réaction au feu, mis en œuvre par un procédé continu d’extrusion. Pour cela, il a été nécessaire de mener une étude rhéocinétique afin de mieux comprendre la réaction de géopolymérisation et ainsi d’éviter les risques de réticulation dans la machine. Le principe de superposition temps de réaction – température a été introduit afin de prédire à la fois le temps de gel chimique ainsi que les modules de la pâte de géopolymère au cours de la réaction.

APA, Harvard, Vancouver, ISO, and other styles

29

Sebio, Leonard. "Desenvolvimento de plastico biodegradavel a base de amido de milho e gelatina pelo processo de extrusão : avaliação das propriedades mecanicas, termicas e de barreira." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255879.

Full text

Abstract:

Orientador: Yoon Kil Chang<br>Tese (doutorado)- Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-03T16:41:50Z (GMT). No. of bitstreams: 1 Sebio_Leonard_D.pdf: 5261418 bytes, checksum: c5f42d63b358e2b0af36c89bdbdd0259 (MD5) Previous issue date: 2003<br>Resumo: Devido ao crescente acúmulo de lixo proveniente de plásticos sintéticos, agredindo o ecossistema, diferentes estratégias estão sendo seguidas com o intuito de procurar diminuir essa agressão através da prevenção, redução, reciclagem, valorização química dos materiais sintétic

APA, Harvard, Vancouver, ISO, and other styles

30

Perotti, Gustavo Frigi. "Nanocompósitos orgânico-inorgânicos de polímero biodegradável e estruturas lamelares." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-06082013-081235/.

Full text

Abstract:

O presente trabalho de Doutorado tem como objetivo investigar a influência de materiais lamelares prístinos e modificados e a influência de diferentes rotas sintéticas nas propriedades físico-químicas do amido termoplástico, utilizando glicerol como plastificante. Para tanto, empregou-se para a produção dos materiais híbridos uma argila sintética da família das hectoritas (Laponita RD) na forma prístina e também modificada com íons berberine e carnosina, além de um hidróxido duplo lamelar (HDL) constituído por íons Zn2+/Al3+ intercalado com carboximetilcelulose (CMC). O amido e o material lame

APA, Harvard, Vancouver, ISO, and other styles

31

Ibáñez, García Ana. "Desarrollo y caracterización de biocomposites con cáscara de almendra para el sector juguetero." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/172341.

Full text

Abstract:

[ES] En los últimos años, se ha incrementado la sensibilidad en torno a las cuestiones ambientales derivadas del uso de los materiales poliméricos basados en el petróleo y el impacto de éstos en el medio ambiente. La concienciación social y ambiental adquirida por parte de los consumidores hace que industrias tradicionales, como la del juguete, donde el uso del plástico está ampliamente extendido, desee adaptarse voluntariamente a la demanda del mercado y las empresas quieran desarrollar nuevas líneas de producto empleando materiales más ecológicos y sostenibles. El principal objetivo de

APA, Harvard, Vancouver, ISO, and other styles

32

Deleage, Fanny. "Formulations et modifications par extrusion réactive d'un mélange de polymères biodégradable et partiellement biosourcé." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES030.

Full text

Abstract:

Dans le domaine des plastiques biodégradables, les produits se doivent d’être de plus en plus compétitifs. Ces travaux, menés entre le laboratoire IMP@UJM et la société LCI ont eu pour objectif principal l’augmentation de la part en matières d’origines renouvelables dans le mélange de polymères biodégradable poly(butylène adipate-co-téréphtalate) (PBAT)/TPF (farine thermoplastique), sans diminuer ses propriétés mécaniques. Ce mélange est obtenu par extrusion en une seule étape, comprenant la plastification de la farine et le mélange avec le polyester. L’enjeu scientifique était donc en premier

APA, Harvard, Vancouver, ISO, and other styles

33

Ghosh, Indrajit. "Blends of Biodegradable Thermoplastics With Lignin Esters." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36890.

Full text

Abstract:

Thermoplastic blends of several biodegradable polymers with lignin (L) and lignin esters were prepared by solvent casting and melt processing. Among the biodegradable thermoplastics were cellulose acetate butyrate (CAB), poly-hydroxybutyrate (PHB), poly-hydroxybutyrate-co-valerate (PHBV), and a starch-caprolactone blend (SCL). Lignin esters included acetate (LA), butyrate (LB), hexanoate (LH), and laurate (LL). Blend characteristics were analyzed in terms of thermal and mechanical properties. The results indicate widely different levels of interaction between two polymer constituents. Melt

APA, Harvard, Vancouver, ISO, and other styles

34

Cordeiro, Edna Maria Silva. "Biocomp?sitos polim?ricos obtidos a partir da fra??o lignocelul?sica e amil?cea do caro?o de manga (mangifera indica), Tommy atkins." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12827.

Full text

Abstract:

Made available in DSpace on 2014-12-17T14:07:16Z (GMT). No. of bitstreams: 1 EdnaMSC_DISSERT.pdf: 4754889 bytes, checksum: 7ba8ec4a5f3d11921ca74b85b2fe0b3b (MD5) Previous issue date: 2013-07-19<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>This employment has the function the utilization of mango seeds Tommy Atkins, like starch source to obtain biopolymers and fibers source and nanowhiskers cellulose also, that will be use like reinforcing fillers in micro and nanobiocomposites polymeric. The fibers in natura removed from tegument mango seed were characterized, as weel as

APA, Harvard, Vancouver, ISO, and other styles

35

Samuel, Cédric. "Apport de la farine de maïs plastifiée dans les mélanges à matrice polyester pour des applications films." Thesis, Saint-Etienne, 2011. http://www.theses.fr/2011STET4019/document.

Full text

Abstract:

Ces travaux menés à l’IMP@UJM ont pour objectifs la réalisation de films minces alimentaires 100% compostables par extrusion gonflage, thermoformage et biétirage. Des mélanges à base de farine plastifiée et de polyesters compostables ont été étudiés. La farine peut être déstructurée par extrusion bivis en présence de glycérol de manière similaire à l’amidon. La farine thermoplastique, ainsi obtenue, présente toutefois des différences notables avec l’amidon mais ne répond toujours pas aux applications visées. Son mélange avec des matrices polyester (PBAT et PLA) dans un procédé d’extrusion bivi

APA, Harvard, Vancouver, ISO, and other styles

36

Kubíček, Václav. "Charakterizace vyfukovaných fólií z měkčeného polylaktidu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-414128.

Full text

Abstract:

The master's thesis focuses on preparation of blown films from polylactid acid (PLA) which was blended with selected polyesteres – poly(butylene adipate-co-terephtalate) (PBAT), polycaprolactone (PCL) and polybutylene succinate (PBS) – and thermoplastic starch (TPS) in amount of 30% in order to soften PLA films. The influence of the aditives on static and mechanical tensile properties, on structure, morphology and thermal properties of the films was determined and the obtained parameters were compared to properties of films prepared from neat PLA and high density polyethylene (HDPE). The resul

APA, Harvard, Vancouver, ISO, and other styles

37

Simmons, Stephanie. "Influence of processing on the structure and properties of semi-crystalline polymer systems : 1) biodegradable starch/poly(ethylene-vinyl alcohol) blends and 2) polyolefinic thermoplastics." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11379.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Fringant, Christophe. "Obtention de matériaux thermoplastiques à hydrophobie contrôlée par modification chimique de l'amidon." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10128.

Full text

Abstract:

L'amidon est un polymere naturel qui permet l'obtention de materiaux thermoplastiques. Malheureusement la nature hydrophile de l'amidon rend ces materiaux sensibles aux variations d'humidite du milieu ambiant. L'hydrophilie est liee a la presence de groupements hydroxyles. Ces groupements interagissent avec les molecules d'eau et etablissent des liaisons hydrogenes fortes selon un processus modelise par mecanique moleculaire. La modification chimique permet de remplacer les groupements hydroxyles par des fonctions plus hydrophobes. La reaction la plus efficace est l'acetylation qui permet d'ob

APA, Harvard, Vancouver, ISO, and other styles

39

Kang, Po-Pine, and 康博評. "Preparation and Properties of Nanocrystalline Cellulose/Pseudo-Thermoplastic Potato Starch/Pseudo-Thermoplastic PVA Polyblends." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/62187370018147253045.

Full text

Abstract:

碩士<br>逢甲大學<br>纖維與複合材料學系<br>103<br>The study used hydrolysis by H2SO4 for cellulose to form Nanocrystalline Cellulose by adding the strach solution to form Nanocrystalline Cellulose/Pseudo-Thermoplastic Potato Starch/PVA films. This study is divided into two parts. In the first part we discussed different concentrations of H2SO4 effect on Nanocrystalline Cellulose/Pseudo- Thermoplastic Potato Starch films. In the second part, we used cellulose to blend the sample from previous results to form Nanocrystalline Cellulose/Pseudo-Thermoplastic Potato Starch/PVA films. In the first part, TEM analysis

APA, Harvard, Vancouver, ISO, and other styles

40

Oakley, Philip. "Reducing the Water Absorption of Thermoplastic Starch Processed by Extrusion." Thesis, 2010. http://hdl.handle.net/1807/25883.

Full text

Abstract:

Novel plastics that are biodegradable and made from renewable natural resources are currently being researched as alternatives to traditional petroleum-based plastics. One such plastic, thermoplastic starch (TPS) is produced from starch processed at high temperatures in the presence of plasticizers, such as water and glycerol. However, because of its hydrophilic nature, TPS exhibits poor mechanical properties when exposed to environmental conditions, such as rain or humidity. The overall objective of this thesis was to produce a thermoplastic starch based material with low water absorption tha

APA, Harvard, Vancouver, ISO, and other styles

41

Ha, Seung-kyu [Verfasser]. "Starch incorporated polymerization of thermoplastic polyurethan / von Seung-kyu Ha." 2002. http://d-nb.info/965659852/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Wu, Yung-Ching, and 吳泳慶. "The Fabrications of Polymer Blend with Pseudo- Thermoplastic Starch/ Polyvinyl Alcohol." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/59432981695617941832.

Full text

Abstract:

碩士<br>逢甲大學<br>紡織工程所<br>96<br>The best method to improve environment is that lead the traditional plastic materials are replaced by biodegradable materials. In this research, the starch and polyvinyl alcohol (PVA) were mixed to spin starch/PVA blend fiber. It’s hard to spin starch and PVA fiber by melt spinning because the melting temperature is close to the degradation temperature and the melt-mobility is not enough to spin fiber. In order to solve these problems, starch and PVA are plasticized by glycerin to reduce the melting temperature and increase the mobility. In addition, starch is degr

APA, Harvard, Vancouver, ISO, and other styles

43

陳昱成. "Preparation and Properties of Nanocrystalline Cellulose/ Pseudo-Thermoplastic Cassava Starch Polyblend." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/80732270692347308383.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Rodriguez, Uribe Arturo. "Fundamentals and Characterization of Fungally Modified Polysaccharides for the Production of Bio-plastics." Thesis, 2010. http://hdl.handle.net/1807/24865.

Full text

Abstract:

Starch and microbial exo-polysaccharides produced by prokaryotes (i.e. Eubacteria and Archaebacteria) and eukaryotes (i.e. phytoplankton, fungi, and algae) are recognized as a permanent source of biopolymers for the packaging industry. However, the unsuitable mechanical properties for thermoplastic applications and/or high cost of production have restricted their generalized use. Fungal isolates of the genus Ophiostoma are able to produce exo-polysaccharides or protein-like compounds in a medium containing starch as the substrate. Various analytical techniques were used as an approach to inve

APA, Harvard, Vancouver, ISO, and other styles

45

Chadehumbe, Cordelia. "Tensile properties of thermoplastic starch and its blends with polyvinyl butyral and polyamides." Thesis, 2008. http://hdl.handle.net/2263/26764.

Full text

Abstract:

Starch is a natural polymer occurring in the seeds, tubers and stems of many plants, including maize. It is a mixture of two polymers: linear amylose and highly branched amylopectin. The ratio and the molar masses of the two polymers depend on the starch source, giving rise to different starch properties. Thermoplastic starch (TPS) was obtained by gelatinising a dry-blend mixture of maize starch, water, plasticisers and additives in a single-screw laboratory extruder. The TPS formed is a translucent amorphous material that could be shaped into pellets and injection-moulded into a variety of ar

APA, Harvard, Vancouver, ISO, and other styles

46

Sun, Chien-Hao, and 孫健豪. "The Characteristics Of Plasticization And Cross-Linking In Thermoplastic Starch By Adding Acids And Alcohols." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/74508785529823452629.

Full text

Abstract:

碩士<br>高苑科技大學<br>化工與生化工程研究所<br>100<br>Starch is a biodegradable material which is the most abundance and friendly environment. The thin film was prepared from gelatinized cassava starch by tape casting method. The gelatinized cassava starch was further improved by various functional acids such as boric acid （BA）、succinic acid （SA）、citric acid （CA）、maleic anhydride （MA） used as cross-linking agents and alcohol such as glycerol （GL）、ethylene glycol（EG）、D–sorbitol （DS）chosen as plasticizers. These films were then elucidated their structures and thermal properties by thermo gravimetric analysis (TG

APA, Harvard, Vancouver, ISO, and other styles

47

Tung, Chi-Che, and 童啟哲. "Study on the Fabrication and Properties of Pseudo-thermoplastic Starch Biodegradable Materials and Their Products." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/70477004640959469740.

Full text

Abstract:

博士<br>逢甲大學<br>纖維與複合材料學系<br>99<br>In recent years, the development of pseudo-thermoplastic biodegradable polymers materials has been extensively discussed; starch, polyvinyl alcohol (PVA) and cellulose triacetate (CT) are biodegradable and have been applied in industry, they have the potential to replace the conventional packaging and biomedical purposes. The strong intermolecular and intramolecular hydrogen bonds between hydroxyl groups of the molecules, which lead to the melting temperatures (Tm) lie above the decomposition temperatures (Td), hence they have already degraded before melting an

APA, Harvard, Vancouver, ISO, and other styles

48

Khan, Sadia. "Isolation of Extracellular Proteins from Ophiostoma ulmi and their Effect on Tensile Properties of Thermoplastic Starch." Thesis, 2010. http://hdl.handle.net/1807/27310.

Full text

Abstract:

Starch-derived bioplastics are an inexpensive, renewable and environmentally-friendly alternative to traditional petroleum-based plastics. Proteins secreted by Ophiostoma ulmi, were investigated for their application in bioplastic product. Proteins were isolated from fungal cultures by anion exchange chromatography and used to treat starch. Subsequently, plastic films were generated by solution casting, with glycerol as plasticizer. Tensile strength of the films was found to increase significantly compared to the control. The relative water holding capacity of the treated starch also decreased

APA, Harvard, Vancouver, ISO, and other styles

49

Hsu, Yao-Yu, and 許耀宇. "Effects of various clay and plasticizers on the structure and properties of thermoplastic starch/clay nanocomposites." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/2mpfh8.

Full text

Abstract:

碩士<br>國立臺灣海洋大學<br>食品科學系<br>101<br>The structure and properties of thermoplastic starch (TPS)/clay nanocomposites prepared by melt intercalation and determined by intercalation of TPS which in turn is affected by clay hydrophilicity and plasticizers. Additive of urea or formamide increased the degree of clay dispersion more than glycerol and could form exfoliated nanocomposites in TPS/Na+ montmorillonite (Na+MMT) and TPS/citric acid-activated montmorillonite (CMMT) nanocomposites. Higher Tg and tensile strength, lower water vapor permeability were also observed. The plasticizers did not react w

APA, Harvard, Vancouver, ISO, and other styles

50

Chen, Yu-Lin, and 陳宥霖. "Study on the Mechanical Properties of Sebacic Acid and Maleic Anhydride Modified Thermoplastic Starch/Polyurethane Blends." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/68780135235833129064.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!