Log in

Relevant bibliographies by topics / Diblock copolymer synthesis / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Diblock copolymer synthesis.

Dissertations / Theses on the topic 'Diblock copolymer synthesis'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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 'Diblock copolymer synthesis.'

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

Qureshi, M. S. "A study of styrene-ethylene oxide diblock copolymers." Thesis, University of Strathclyde, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292269.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Shakir, Sa'ed A. "Studies of stabilization of non-aqueous polymer dispersions with diblock copolymers." Thesis, Loughborough University, 1987. https://dspace.lboro.ac.uk/2134/19421.

Full text

Abstract:

A diblock copolymer of Poly (Styrene-b- [ethylene-co-propylene]) has been used as a stabilizer in non-aqueous dispersion polymerizations of methyl methacrylate and vinyl acetate in n-heptane. The particles thus produced were stabilized by well defined surface layers of ethylene-propylene copolymer chains. The dependence of the particle size on the stabilizer, monomer and initiator concentrations was studied. Both seeded and one-shot polymerization techniques were investigated. Polymer particles were characterized by transmission electron microscopy to determine particle shape and size. The lon

APA, Harvard, Vancouver, ISO, and other styles

3

Akçora, Pınar. "Synthesis and characterization of diblock copolymer templated iron oxide nanoparticles." College Park, Md. : University of Maryland, 2005. http://hdl.handle.net/1903/2720.

Full text

Abstract:

Thesis (Ph. D.) -- University of Maryland, College Park, 2005.<br>Thesis research directed by: Chemical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

APA, Harvard, Vancouver, ISO, and other styles

4

Cunningham, Victoria. "Synthesis of diblock copolymer nanoparticles via polymerisation-induced self-assembly." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/14322/.

Full text

Abstract:

Reversible addition-fragmentation chain transfer (RAFT) polymerisation has been used to synthesise a range of amphiphilic diblock copolymers. These diblock copolymers undergo polymerisation-induced self-assembly (PISA) to form spherical, worm-like or vesicular nano-objects, depending on the target diblock composition and the reaction conditions. These diblock copolymers are analysed by a variety of techniques including NMR, GPC, DLS and TEM.

APA, Harvard, Vancouver, ISO, and other styles

5

Feng, Lei. "Synthesis and Characterization of Ionically Bonded Diblock Copolymers." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1385331107.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Gautriaud, Emilie. "Synthesis of polyisobutylene-polyisoprene diblock copolymer based on natural rubber biosynthesis." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1154963470.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chen, Alfred Yuen-Wei. "Synthesis and Functionalization of Poly(ethylene oxide-b-ethyloxazoline) Diblock Copolymers with Phosphonate Ions." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/23930.

Full text

Abstract:

Poly(ethylene oxide) (PEO) and poly(2-ethyl-2-oxazoline) (PEOX) are biocompatible polymers that act as hydrophilic "stealth" drug carriers. As block copolymers, the PEOX group offers a wider variety of functionalization. The goal of this project was to synthesize a poly(ethylene oxide)-b-poly(2-ethyl-2-oxazoline) (PEO-b-PEOX) block copolymer and functionalize pendent groups of PEOX with phosphonic acid. This was achieved through cationic ring opening polymerization (CROP) of 2-ethyl-2-oxazoline monomer onto PEO. These polymerizations used tosylsulfonyl chloride as initiator. Size-exclusion chr

APA, Harvard, Vancouver, ISO, and other styles

8

Montenegro-Galindo, Gladys Rocio. "Synthesis and Protein Adsorption Studies of Pegylated-Polyester Nanoparticles with Different Peg Architectures." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384629996.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Gautriaud, Emilie. "Review of natural rubber biosynthesis and synthesis of model intermediates for the preparation of a macroinitiator for the in vitro synthesis of polyisobutylene-polyisoprene diblock copolymer." Akron, OH : University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1154963470.

Full text

Abstract:

Thesis (M.S.)--University of Akron, Dept. of Polymer Science, 2006.<br>"December, 2006." Title from electronic thesis title page (viewed 12/31/2008) Advisor, Judit E. Puskas; Faculty Reader, Coleen Pugh; Department Chair, Mark D. Foster; Dean of the College, Frank N. Kelley; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

10

Jarnagin, Nathan D. "High χ block copolymers for sub 20 nm pitch patterning: synthesis, solvent annealing, directed self assembly, and selective block removal". Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50287.

Full text

Abstract:

Block copolymer (BCP) thin film patterns, generated using directed self-assembly (DSA) of diblock copolymers, have shown excellent promise as templates for semiconductor device manufacturing since they have the potential to produce feature pitches and sizes well below 20 nm and 10 nm, respectively, using current 193 nm optical lithography. The goal of this work is to explore block copolymers with sufficient thermodynamics driving force (as described by the Flory Huggins interaction parameter, χ) for phase separation at these smallest lengths scales. Here, poly(styrene)-b-poly(hydroxystyrene

APA, Harvard, Vancouver, ISO, and other styles

11

Borkar, Sachin. "Synthesis and characterization of functional diblock copolymers." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=971274886.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Eloi, Jean-Charles. "Synthesis, self-assembly, and applications of polyferrocenylsilane diblock copolymers." Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505752.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Li, Chi-ho, and 李志豪. "Synthesis of photosensitizing diblock copolymers for functionalizationof carbon nanotubes and their applications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47869379.

Full text

Abstract:

Block copolymers containing pendant pyrene, terpyridine and poly(3- hexylthiophene) moieties with different block ratios and chain lengths were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization. The block copolymers obtained had narrow molecular weight distribution. The applications of these polymers for non-covalent functionalization of carbon nanotubes and in photovoltaic devices were studied. The molecular weight distribution and block sizes of the block copolymers could be controlled quite well. The polydispersities measured were below 1.25. The

APA, Harvard, Vancouver, ISO, and other styles

14

Santini, Catherine Marie Bambenek 1973. "The synthesis and assembly of linear-dendritic rod diblock copolymers." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29247.

Full text

Abstract:

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2002.<br>Includes bibliographical references.<br>Dendrimers are three-dimensional, hyperbranched macromolecules that possess a uniform size and shape. Most dendrimers are spherical in shape; however, the shape of the dendrimer can be adjusting using the number and the position of the branching groups in the core. For example, dendritic rods have been prepared by assembling a dendron around each repeat unit of a linear polymer core, and hybrid-linear dendritic diblock copolymers have been prepared

APA, Harvard, Vancouver, ISO, and other styles

15

Bailey, Lindsey. "Synthesis and aqueous solution properties of new hydrophilic/hydrophilic diblock copolymers." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340826.

Full text

Abstract:

Well-defined block copolymers of oligo (ethylene glycol) methacrylate (OEGMA)/2-(dimethylamino)ethyl methacrylate (DMA) and OEGMAl2-(diethylamino)ethyl methacrylate (DEA) have been synthesised via group transfer polymerisation (GTP). The crude diblock copolymers were contaminated with either DMA or DEA homopolymer which could be removed by selective precipitation of the copolymers into n-hexane. Polymers with a range of molecular weights and block compositions were synthesised and characterised by gel permeation chromatography (GPC) and nuclear magnetic resonance spectroscopy (NMR), which indi

APA, Harvard, Vancouver, ISO, and other styles

16

Yeoh, Chert-Tsun. "The synthesis of methacrylate amphiphilic diblock and triblock copolymers by copper mediated atom transfer radical polymerisation." Thesis, University of Kent, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413270.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Rajab, Mohammad. "Organisation de nanoparticules métalliques assistée par nanostructuration de films minces de polymère à la paroi, et étude de leurs propriétés physiques." Thesis, Mulhouse, 2013. http://www.theses.fr/2013MULH4412/document.

Full text

Abstract:

Le domaine des nanotechnologies représente la thématique de recherche la plus importante de ce début de 21ème siècle. L’enjeu, bien que apparemment simple est de taille : réaliser des objets ou des structures fonctionnelles, les plus petits possibles et ce de manière reproductible, i.e. en maîtrisant leur taille, leur position. S’inscrivant dans cette problématique, ce travail de thèse porte sur le développement d’une technique originale d’assemblage dirigé de nanostructures à partir de particules d’or et d’argent sous forme de nanofils, nanocristaux, nanoanneaux et nanodisques sur des substra

APA, Harvard, Vancouver, ISO, and other styles

18

Graffe, Andres. "Syntheses and characterization of diblock and triblock copolymers that can be used as templates for nanoporous materials." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99410.

Full text

Abstract:

Block copolymers are known to micro-phase separate into different ordered structures such as lamellae, spheres and cylinders. Such morphologies can be used to template nano-porous materials for membranes and catalyst supports by selective etching of one of the blocks after ordering of the block copolymers. This thesis focuses on the synthesis of polymers that can be used to template nano-porous materials. Poly(styrene)-b-poly(lactide) diblock copolymers and poly(lactide)-b-poIy(styrene)-b-poly(t-butyl styrene) triblock copolymers were synthesized using nitroxide mediated polymerization (NMP) a

APA, Harvard, Vancouver, ISO, and other styles

19

Unali, Giovanni Francesco. "Synthesis and characterisation of methacrylate-based water-soluble diblock and triblock copolymers for drug dispersion in aqueous media." Thesis, University of Sussex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341075.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Huffstetler, Philip Plaxico. "Synthesis and Characterization of Well-Defined Heterobifunctional Polyethers for Coating Magnetite and Their Applications in Biomedicine Resonance Imaging." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/29160.

Full text

Abstract:

Well-defined heterobifunctional homopolyethers and amphiphilic block copolyethers containing a variety of functionalities were designed, synthesized, and characterized via GPC and 1H NMR. These have included controlled molecular weight cholesterol-PEO-OH, mono- and trivinylsilyl-PEO-OH, monovinylsilyl-PEO-PPO-OH, monovinylsilyl-PEO-PPO-PEO-OH, maleimide-PEO-OH, stearyl alcohol-PEO-OH, propargyl alcohol-PEO-OH, trivinylsilyl-PPO-OH, trivinylsilyl-PPO-PEO-OH, and benzyl alcohol-initiated poly(allyl glycidyl ether)-OH. The focus of polymers utilized in this study involved the mono- and trivinylsi

APA, Harvard, Vancouver, ISO, and other styles

21

Rieger, Jutta. "Synthesis, characterization and biomedical interest of amphiphilic biocompatible and bioeliminable (glyco)copolymers of various architectures." Université Joseph Fourier (Grenoble), 2006. http://www.theses.fr/2006GRE10038.

Full text

Abstract:

Ce travail a pour objectif principal la modification de la surface de nanoparticules de polymères par de nouveaux copolymères amphiphiles et biocompatibles, possédant différentes architectures. Les copolymères considérés dans cette étude sont composés d'une chaine hydrophile de poly(oxyde d'éthylène) (POE) et d'une chaîne hydrophobe à base de poly(ε-caprolactone) (PCL). A partir d'un POE coiffé par une unité ε-caprolactone et par un groupement méthoxy à ses extrémités α et ω, respectivement, (γPOE. CL), des copolymères amphiphiles greffés, PCL-g-POE, et un copolymère ternaire possédant une arc

APA, Harvard, Vancouver, ISO, and other styles

22

Yu-Sheng, Ko. "Synthesis diblock copolymer and it's application." 2005. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-0607200521412000.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Ko, Yu-Sheng, and 柯又升. "Synthesis diblock copolymer and it’s application." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/55991053149322093788.

Full text

Abstract:

碩士<br>國立臺灣大學<br>化學研究所<br>93<br>In this thesis, we prepared the amide link of polyethylene glycol methyl ether and 2-bromoisobutyryl bromide as the marcoinitiator. We used ATRP method to prepare amphiphilic diblock copolmers with narrow polydispersity. The hydrophilic end of these amphilic block copolymers is polyethylene glycol methyl ether, and the hydrophobic end of these amphilic block copolymers is methyl acrylate. We used EOm-MAn as templates to synthesize porous silica materials under acid aqueous condition. As the hydrophobic end (MA) increases, we can observe the pore size also increas

APA, Harvard, Vancouver, ISO, and other styles

24

HUANG, JIAN PING, and 黃建評. "Synthesis of the Novel Chiral Diblock Copolymer." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/n4ew9s.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>102<br>Chiral Polymers possess unique physical, chemical and biochemical properties, and hence have been the focus of academy and industrial research because of their potential applications. To date, only a few synthetic main-chain chiral polymers are known because of the difficulty in the syntheses of chiral monomers. This paper reports the first syntheses of a series of new chiral diblock copolymers of the PBnMA-b-PLCG (poly(Benzyl methacrylate)-block-poly(L-Dicyclohexylglycolide)), which were synthesized from ring-opening-polymerization of a chiral diglycolide est

APA, Harvard, Vancouver, ISO, and other styles

25

CHANG, CHE-FU, and 張哲輔. "Synthesis of the Novel Chiral Diblock Copolymer and Self-assembly Studies." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/q4u5kp.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>103<br>Chiral Polymers possess unique physical, chemical and biochemical properties, and hence have been the focus of academy and industrial research because of their potential applications. To date, only a few synthetic main-chain chiral polymers are known because of the difficulty in the syntheses of chiral monomers. This paper reports the first syntheses of a series of new chiral diblock copolymers of the PBnMA-b-PLCG (poly(Benzyl methacrylate)-block-poly(L-Dicyclohexylglycolide)), which were synthesized from ring-opening-polymerization of a chiral diglycolide est

APA, Harvard, Vancouver, ISO, and other styles

26

徐旻聰. "Synthesis of Polypropylene-Polyamide6 Diblock Copolymer via Metallocene/Mao and Borane Chemistry." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/87720429291274553960.

Full text

Abstract:

碩士<br>中原大學<br>化學學系<br>85<br>The homogeneous metallocene Et(Ind)2ZrCl2 (1,1'-ethylene di-η5-indenyl-zirconium dichloride) with MAO were used in the polymerization of polypropylene. It is well known that this catalyst system produced a isotactic, and chain end unsaturated polypropylene. The borane was employed to the metallocene polypropylene to prepare borane-containing polypropylene which can be transformed to hydroxyl-terminated polypropylene. Polypropylene-nylon 6 diblock copolymer have synthesized from telechelic hydroxyl-terminated polypropylene, PPOH, by conversion of this prepolyme

APA, Harvard, Vancouver, ISO, and other styles

27

Wei, Sheng-Hsuan, and 魏聖軒. "The Synthesis and Catalytic Application of Amphiphilic Diblock Copolymer Supported Metal Complexes." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/96435567641445405240.

Full text

Abstract:

碩士<br>國立臺灣大學<br>化學研究所<br>94<br>In this thesis, the hydroxy group of poly(ethylene glycol methyl ether) (M.W.= 750&2000) was transferred to an amide-linkage macroinitiator, as hydrophilic part. The hydrophobic part was introduced by polymerization of methyl acrylate via atom transfer radical polymerization. The obtained amphilic diblock copolymers were in different molecular weights with narrow molecular weight distribution. The ester functionality on poly(methyl acrylate) was modified with 1-(3-aminopropyl) imidazole to introduce the coordinating donors. By reaction time, the number of donor

APA, Harvard, Vancouver, ISO, and other styles

28

Horng, Chung Hsien, and 洪忠賢. "synthesis of diblock polyolefin and polyester copolymer via hafnium and stannous octoate catalysts." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/46231197946365441212.

Full text

Abstract:

碩士<br>中原大學<br>化學學系<br>84<br>The atactic polymers and oligomers of 4-methyl-1-pentene were synthesized by using Metallocene/MAO catalyst.1H and 13C NMR analysis of the oligmers show these products containing unsatur- ated chain end which contain vinylene,vinyl,and vinylidene. The oligomers can be transformed to functionalized polyolefins with various functional groups, such as -BR2, -OH, and -OSi(CH3)3. The reaction kinetics of Cp2HFCl2/MAO is observed at different temperatuer. A new block c

APA, Harvard, Vancouver, ISO, and other styles

29

Chien, Yuan-Han, and 簡約翰. "Synthesis of Multi-functional of Diblock Copolymer containing Azobenzene through Controlled Living RAFT Polymerization." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/10890247535863794206.

Full text

Abstract:

碩士<br>元智大學<br>化學工程與材料科學學系<br>105<br>This paper reports on studies regarding the multifunctional responsive chemosensory phenomena and self-assembly behaviors of a photoresponsive amphiphilic diblock copolymer, (poly(NIPAM36-b-Azo4)), through two-step reverse addition-fragmentation transfer polymerization. The weight-average molecular weights (Mws) of NIPAM macro-CTA and poly(NIPAM36-b-Azo4) were 4.62 × 103 and 6.35 × 103 g/mol, with the corresponding PDIs of 1.25 and 1.24, respectively. The diblock copolymer exhibited moderate thermal stability, with thermal decomposition temperatures greater

APA, Harvard, Vancouver, ISO, and other styles

30

Chung, Ping-Hsien, and 鍾秉憲. "Synthesis of butyl acrylate and styrene of their living homopolymer, diblock copolymer and triblock copolymer via living free radical polymerization." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/40914166351634843591.

Full text

Abstract:

碩士<br>國立臺灣大學<br>化學工程學研究所<br>91<br>This study includes three parts, the first part is concerned with using 4-oxo-TEMPO to synthesize poly(butyl acrylate) (PBA) via a two steps temperature increasing process. At first, AIBN, 4-oxo-TEMPO, butyl acrylate, DDBSA and DMF are used to react under a two stage temperature, that is the reactants are hold at a temperature for hours then the temperature is raised to higher temperature, 147℃. NMR and UV are used to investigate the concentration change of initiators and stable free radicals. Also, the products after preheating are characterized by NMR.

APA, Harvard, Vancouver, ISO, and other styles

31

Aljeban, Norah. "Synthesis and Characterization of Novel Amphiphilic Diblock Copolymers Poly (2-Ethyl-2-Oxazoline)-b-Poly (Vinylidene Fluoride)." Thesis, 2021. http://hdl.handle.net/10754/669889.

Full text

Abstract:

Poly (2-ethyl-2-oxazoline)-based amphiphilic diblock copolymer has the potential to form promising membrane materials for water purification due to the thermal stability and good solubility in aqueous solution and also for gas separation because of the presence of polar amide group along the polymer backbone. Moreover, their self-assembly into micelles renders them candidate materials as nanocarriers for drug delivery applications. In this study, a novel well-defined linear PEtOx-based amphiphilic diblock copolymer with a hydrophobic fluoropolymer, i.e., PVDF, have been successfully synthesize

APA, Harvard, Vancouver, ISO, and other styles

32

Chen, Yu-chung, and 陳宇仲. "Syntheses of Novel Diblock Copolymers Containing Polycyclopentene Segments." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/71875447431622869838.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程所<br>93<br>In this study, the cyclopentene end-capped polycyclopentene was prepared by [Ph2C(Flu)(Cp)]ZrCl2/MAO catalyst. The resulting functional group containing polymer was epoxidated with mCPBA to provide an epoxy group at the chain end of the polycyclopentene. The polycyclopentene segment containing diblcok copolymers can then be synthesized by using the epoxy group for coupling with living anionic polyolefins. The polycyclopentene prepared by [Ph2C(Flu)(Cp)]ZrCl2 catalyst is a high Tg amorphous polymer which contains an unsaturated double bond generated by β-hydride e

APA, Harvard, Vancouver, ISO, and other styles

33

Shu-ChiTsao and 曹書綺. "Synthesis and Self-Assembly of Azobenzene-Containing Diblock Copolymers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/64370310212984296111.

Full text

Abstract:

碩士<br>國立成功大學<br>化學工程學系碩博士班<br>101<br>A series of rod-coil diblock copolymer of poly(tert-butyl acrylate)-block-poly(6-[4-(4'-methoxyphenylazo)phenoxy]hexylmethacrylate) (PtBA-b-Pazobenzene) was synthesized using atom transfer radical polymerization to investigate the self-assembly and photo-induced behavior of the diblock copolymers. The chemical structures of synthesized compounds were characterized using FTIR, 1H-NMR, and EA analyzer. The phase transfer temperatures of monomer and polymers were determined by different scanning calorimetry (DSC). The phase behavior of these diblock copolymers

APA, Harvard, Vancouver, ISO, and other styles

34

David, Jennifer Lynn. "The synthesis and characterization of conformationally asymmetric diblock copolymers." 1999. https://scholarworks.umass.edu/dissertations/AAI9932305.

Full text

Abstract:

The phase separation behavior of three conformationally asymmetric diblock copolymer systems has been investigated: poly(butadiene-b-α-methylbenzyl isocyanide), poly(styrene-b-1,3-cyclohexadiene), and poly(styrene- b-carbodiimide). Kuhn length differences between the two blocks of each of these three systems provide rough estimates of their conformational asymmetry and classify these three as intermediate in asymmetry, compared to other literature systems. This dissertation considers their behavior within the context of theoretical predictions and reported experimental investigations. Effects

APA, Harvard, Vancouver, ISO, and other styles

35

Yurt, Serkan. "Synthesis and self-assembly of diblock copolymers for photovoltaic applications." 2010. https://scholarworks.umass.edu/dissertations/AAI3427578.

Full text

Abstract:

This dissertation explores the self-assembly of diblock copolymers as a way to control the morphology of photoactive layer in organic solar cells. Heterojunction formation between electron donor and electron acceptor materials needs to be controlled on the nanometer scale to have high power conversion from organic photovoltaic cells. Two approaches were developed to direct the assembly of electron-donors and electron-acceptors into heterojunction structures. The first one involves the synthesis of acid cleavable diblock copolymer to create porous polymer films, which can be used as templates t

APA, Harvard, Vancouver, ISO, and other styles

36

Kuo, Shun-Li, and 郭順立. "Syntheses of cyclic olefin based diblock copolymers containing polar blocks." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/52173976388954816649.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>93<br>In this work, a selective chain transfer reaction, was used for the preparation of p-methylstyrene end capped polynorbornene by using Ph2C(Cp)(Ind)ZrCl2/MAO catalyst to undergo norbornene polymerization in the presence of p-methylstyrene and hydrogen. Subsequently, the p-methylstyrene end group can be further functionalized in the presence of sec-BuLi to provide the benzylic carbanion containing polymer, which can be used as the active species to undergo for preparing novel polar diblock copolymers, such as PNB-b-PMMA and PNB-b-P2VP. These results provide a new

APA, Harvard, Vancouver, ISO, and other styles

37

Borkar, Sachin [Verfasser]. "Synthesis and characterization of functional diblock copolymers / vorgelegt von Sachin Borkar." 2003. http://d-nb.info/971274886/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Cui, Chengzhong. "Synthesis of ionic boron amphiphilic diblock copolymers and pyridylborate ligands for transition metal complexes." 2010. http://hdl.rutgers.edu/1782.2/rucore10002600001.ETD.000052184.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

江晟鋐. "Syntheses and Self-Assembly of Stereoregular Photoluminescent Polymers and Diblock Copolymers." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/889522.

Full text

Abstract:

博士<br>國立中正大學<br>化學工程研究所<br>107<br>Polymers are important materials, which found broad industrial applications and various daily usages. Stereoregularity is an important issue in the polymer research as tacticity can typically offer crystallinity that elevates melting point and enhance mechanical strength of polymers for used in the valued-added engineering material applications. On the other hand, conjugated polymers have recently emerged as one of the most epic research area as conjugated polymers were expected to find potential application for used as conducting, light emitting and solar cel

APA, Harvard, Vancouver, ISO, and other styles

40

Lin, Chia-Chung, and 林家仲. "Synthesis and characterization of xanthate-based diblock copolymers through RAFT living polymerization." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6sunde.

Full text

Abstract:

碩士<br>元智大學<br>化學工程與材料科學學系<br>106<br>Drug delivery is one of the most important fields of modern development. N-isopropylacrylamide (NIPAM) molecules are widely used because their lowest critical solution temperature (LCST) is quite similar to human body temperature. Micelles formed by NIPAM could use as a polymer drug carrier, however; the polymer carrier are easily depolymerized based on the concentration, acid-base, temperature and ionic strength. Hence, it is necessary to find ways to make the polymer carrier more stable. This study describes the synthesis of two xanthate-based chain tran

APA, Harvard, Vancouver, ISO, and other styles

41

Gerhana, Kevin, and 安家幸. "Synthesis and Characterization of Self-assembled Diblock Copolymers Containing Azo Pendant Groups." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/79561546650224984009.

Full text

Abstract:

碩士<br>國立成功大學<br>化學工程學系碩博士班<br>96<br>A series of monomers and AB diblock copolymers incorporating azobenzene group as photochromic segment were successfully synthesized and polymerized using atom transfer radical polymerization (ATRP). The synthesized asymmetric AB diblock copolymers were characterized by NMR, GPC, DSC, TGA, and UV-vis. The number-average molecular weights (Mn) of the synthesized polymers were estimated by GPC using mono-dispersed polystyrene as standard, and were found in the range of 1.23×103 - 2.77×104 gmol-1 with polydispersity indexes (PDI) lying between 1.02 and 1.51. The

APA, Harvard, Vancouver, ISO, and other styles

42

Shiau, Ming-Ching, and 蕭明慶. "Novel Syndiotactic polyallylsilane-Based Stereoregular Diblock Copolymers: Syntheses and Self-Assembly Studies." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/90492062407350817716.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程所<br>97<br>Abstract In this study, we report that conducting syndiospecific propylene polymerization in the presence of triethylaluminum (chain transfer agent) using syndiospecific metallocene complex (Ph2C(Cp)(Flu)ZrCl2) as the catalyst can result in the generation of diethylaluminum-capped syndiotactic polyallyltrimethylsilane (sPATMS-AlEt2) as the exclusive chain transfer reaction product. The resulting diethylaluminum-capped sPATMS can be treated with oxygen and hydrogen peroxide, providing the hydroxy-capped sPATMS (sPATMS-OH) as the end-functionalized prepolymer. The

APA, Harvard, Vancouver, ISO, and other styles

43

Liao, Han-Wen, and 廖漢文. "Synthesis of Amphilic Diblock Copolymers via Living Polymerization and Benzoazole Contained Fluorescent Polymers." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/38048900102736873943.

Full text

Abstract:

碩士<br>國立臺北科技大學<br>有機高分子研究所<br>92<br>In the first part of this dissertation, a series of well-defined hydrophobic- hydrophilic diblock copolymers have been synthesized in high yield under environmentally friendly conditions via atom transfer radical polymerization (ATRP). The hydrophilic block is based on methoxy-capped oligo(ethylene glycol) methacrylate (OEGMA) and the hydrophobic component is PMMA block. PMMA-Br (Mn 12000, Mw/Mn 1.37) prepared via ATRP method and PMMA-Br was applied as a macroinitiator. Two solvent systems, acetone and mixed solvents of toluene/H2O (1/10) with surfactant hav

APA, Harvard, Vancouver, ISO, and other styles

44

Chang, Liang-Kuei, and 張良睽. "Stereoregular Diblock Copolymers of Isotactic Poly(1-pentene) : Syntheses and Self-Assembled Nanostructures." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/36254752698865907579.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程所<br>98<br>In this study, we report that conducting isospecific Poly(1-pentene) polymerization in the presence of chain transfer agent (trimethylaluminum; triethylaluminum) using isospecific metallocene catalyst (rac-Me2Si(Ind)2ZrCl2; rac-Me2Si(2-methyl-4-phenylInd)2ZrCl2) can result in the generation of aluminum-capped isotactic poly(1-pentene) as the exclusive chain transfer reaction product. The resulting aluminum-capped iP1P can be treated with oxygen and hydrogen peroxide to provide the hydroxy-capped iP1P (iP1P-OH) as the end-functionalized prepolymer. We also demonst

APA, Harvard, Vancouver, ISO, and other styles

45

"The synthesis of amphiphilic star and cyclic diblock copolymers and their potential biomedical applications." Tulane University, 2010.

Find full text

Abstract:

The preparation of well defined diblock copolymers has garnered great interest for their widespread applications. Because of the ever increasing need for innovative biomedical applications, we sought to prepare amphiphilic star and cyclic diblock copolymers with potential transdermal drug delivery and antimicrobial properties, respectively. Atom transfer radical polymerization (ATRP) was the chosen polymerization technique for the preparation of these polymers because its end group retention allows for preparation of block copolymers and for post-polymerization modification of the terminal hal

APA, Harvard, Vancouver, ISO, and other styles

46

Hsu, Wei Che, and 許維哲. "Stereoregular Diblock Copolymer of Syndiotactic Polypropylene and Poly (L-mandelide)：Syntheses and Self-assembly Studies." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/70515830013234364671.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>101<br>This paper reports the first syntheses of a series of new chiral diblock copolymers of poly (L-mandelide) (PLMA) and syndiotactic polypropylene (sPP) and their use in the self-assembly to give ordered nanomorphologies. 　　In order to provide sPP-b-PLMA diblock copolymer, the sPP block was prepared by conducting the syndiospecific polymerization of propylene in the presence of triethylaluminum (chain transfer agent) using Ph2C(Cp)(Flu)ZrCl2 as the catalyst. The resulting alkyl aluminum end-capped sPP was in situ treated with oxygen and hydrogen peroxide so as to

APA, Harvard, Vancouver, ISO, and other styles

47

HSU, JUNG-TZU, and 許容慈. "Syntheses of the Novel Main Chain Chiral Diblock Copolymers and Their Self-Assembly Studies." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/9e8y44.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>107<br>In this study, the influence of main chain chirality on the self-assembled structure of chiral diblock copolymers was examined through the successful syntheses of novel main chain chiral polymers (poly(D/L-dicyclohexylglycolide), PDCG/PLCG) and their block copolymers (BCPs*) PBnMA-b-P(D or L)CG. First, enantiopure dicyclohexylglycolide (DCG/LCG) were synthesized from the dimerization of enantiopure mandelide, which was prepared from the hydrogenation of enantiopure mandelic acid, using p-toluenesulfonic acid as the acid catalyst. Second, the hydroxyl-capped po

APA, Harvard, Vancouver, ISO, and other styles

48

HSUEH, CHUN-TING, and 薛俊廷. "Stereoregular Diblock Copolymers of Isotactic Poly(1-butene) : Syntheses and Self-Assembly Nanostructures Studies." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/77410922181114447726.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>104<br>In this study, we report that by conducting the isospecific Poly(1-Butene) polymerization in the presence of chain transfer agent (triethylaluminum) using rac-Me2Si(Ind)2ZrCl2,rac-C2H4(Ind)2ZrCl2 and rac-Me2Si(2-methyl-4-phenylInd)2ZrCl2 as the isospecific metallocene catalyst can result in the generation of aluminum-capped isotactic poly(1-Butene) as the exclusive chain transfer reaction product. The resulting aluminum-capped iP1B can be treated with oxygen and hydrogen peroxide to provide the hydroxy-capped iP1B (iP1B-t-OH) as the end-functionalized prepolym

APA, Harvard, Vancouver, ISO, and other styles

49

Hsin-TzuTai and 戴欣慈. "Synthesis and Photoresponsive and Crystallization Behaviors of Azobenzene-containing Diblock Copolymers and Azobenzene/Polymer Complexes." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/28wbp6.

Full text

Abstract:

碩士<br>國立成功大學<br>化學工程學系<br>104<br>In this study, azobenzene monomers and poly(ethylene glycol)methy lether-block-poly(6-[4-(4'-methoxyphenylazo)phenoxy]hexylmethacrylate) (mPEG-b-PAzo) block copolymers were synthesized through atom transfer radical polymerization. We also prepared azobenzene/PEG complexes through hydrogen bonding interaction. The photoresponsive behavior and its effects on the microphase separation and crystallization behavior of both systems were investigated. The mPEG-b-PAzo block copolymers were dissolved in various neutral and selective solvents and the photoresponsive beha

APA, Harvard, Vancouver, ISO, and other styles

50

CHEN, TIEN-LIN, and 陳天麟. "Synthesis of polar diblock copolymers for use in self-assembly and as nano-materials for hydrogenation studies." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/em2rr5.

Full text

Abstract:

碩士<br>國立中正大學<br>化學工程研究所<br>105<br>The synthesis of block copolymers has become an important area of research as the aggregation strength between different polymer blocks can lead to the formation of ordered nanomorphologies through self-assembly of block copolymers. In this studies, mPEG-block-P4VP was prepared by living radical polymerization (ATRP) of P4VP using chloroester end-capped mPEG as the macroinitiator. The chloroester-capped mPEG was prepared by esterification of mPEG-OH in the presence of 2-chloropropionyl chloride. Self-assembly of the resulting mPEG-block-P4VP shows that the suc

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!