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Relevant bibliographies by topics / Polymer chemistry / Dissertations / Theses

Dissertations / Theses on the topic 'Polymer chemistry'

To see the other types of publications on this topic, follow the link: Polymer chemistry.

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

Cooke, Richard Hunter III. "THE ENHANCEMENT OF PEROXIDE-CURED FLUOROELASTOMER RUBBER TO METAL BONDING." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1377022145.

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2

Schlindwein, Walkiria Santos. "Conducting polymers and polymer electrolytes." Thesis, University of Leicester, 1990. http://hdl.handle.net/2381/33889.

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Polymers are mostly used as insulator materials. Since the late sixties, two new classes of polymeric materials possessing either ionic or electronic conductivities have been extensively studied. The work carried out in this thesis concerns of the study of polymer electrolytes based on poly(ethylene oxide) (PEO) complexed with divalent salts (ionic conductors) and polypyrroles (PPy) electrochemically and chemically prepared (electronic conductors). Different techniques were used to study their properties including Differential Scanning Calorimetry (DSC), Variable Temperature Polarising Microscopy (VTPM), Extended X-ray Absorption Fine Structure (EXAFS), a.c. Impedance, Cyclic Voltammetry, and Fourier Transform Infra-Red Spectroscopy (FTIR). Water-cast films of PEOn:ZnX2 (X = C1, Br, I) were prepared at a range of stoichiometries. The effects of either residual presence of water or thermal treatment related to the formation of high melting crystalline materials were investigated. The morphology of the zinc halides films differs from similar films cast from acetonitrile/methanol mixtures. The presence of high melting crystalline material in the water cast samples is influenced mostly by the concentration, type of anion and drying procedure applied to the samples. The high melting crystalline materials in the zinc samples are more affected by the drying regime. In some cases, solvent effects can be removed by using a high temperature (e.g. 180°C) drying regime. The presence of water normally depresses the melting temperature of the crystalline structures. Films of PEOn.:CaBr2 and PEOn:NiBr2 cast from water were also examined. The high melting crystalline materials in the calcium samples are more affected by the presence of water. The nickel samples are highly crystalline and the presence of high melting material does not seem to be influenced by either the presence of solvent or the drying procedure. EXAFS was used as a suitable technique to probe the local structure surrounding the cation. The results of the zinc halide samples gave some indication of the interionic and polymer-cation interactions. It was demonstrated that the halogen provides the most substantial contribution for the total EXAFS spectrum and the oxygen contribution is much less significant, except in the case of PEOn:ZnC12 samples. This could be due to the size of the nearest neighbour atoms and/or to the interaction polymer-cation. The presence of neutral "ion pairing" is suggested for the PEOn:ZnBr2 samples. The EXAFS results for the samples containing NiBr2 indicated a strong interaction between polymer-salt and the local structure was dependent on concentration, unlike the zinc samples. The polymerisation of pyrrole was investigated by using chemical and electrochemical oxidation routes. The structural characterisation of the compounds obtained was limited by their insolubility. The electrochemically prepared samples presented higher conductivity than the ones which were chemically prepared. The EXAFS results at the Fe K-edge of the PPyFeCl4 sample, which was prepared by direct chemical oxidation, suggested that the iron is coordinated to oxygens at a distance 1.97 A, chlorines at 3.08 A and perhaps nitrogens at 3.72 A. The iron local structure of the composite PVA/PPy doped with FeCl3 was different from the PPyFeCl4 sample. The iron in the composite sample was coordinated to oxygens at 1.98 A and chlorines at 2.18 A. Alternatively, the presence of a distorted FeCl4- is considered.

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3

Sen, Mustafa Yasin. "Green Polymer Chemistry: Functionalization of Polymers Using Enzymatic Catalysis." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1258422775.

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4

Jin, Hailiang. "Investigation of Interfacial Chemistry with In Situ Infrared Spectroscopy." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1562531223401125.

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5

Cerone, Matthew. "Synthesis of Alkyl Substituted Phenylated Poly(Ether Ether Ketone Ketone)s." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1496856789109456.

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6

Rosenthal-Kim, Emily Quinn. "Green Polymer Chemistry: Synthesis of Poly(disulfide) Polymers and Networks." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1386525065.

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7

Gottardo, Gianni. "Polymer Chemistry of Granulating Agents." Doctoral thesis, Università degli studi di Padova, 2008. http://hdl.handle.net/11577/3425507.

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8

Lin, Fei. "Preparing Polymeric Biomaterials Using Click Chemistry Techniques." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1396888729.

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9

Crenshaw, Erik Daniel. "Stimuli Responsive Colorimetric Elastomers via Thiol-yne Chemistry." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555580690422118.

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10

Zhang, Mengru. "Nickel-Catalyzted Alternating Copolymerization of Carbon Monoxide and Ethylene." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1428024122.

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11

Anim-Danso, Emmanuel. "Understanding the structure of water, ice, and aqueous solutions next to solid surfaces." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1441318237.

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12

Meng, Lei. "Investigation of non-isocyanate urethane functional latexes and carbon nanofiller/epoxy coatings." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1445733724.

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13

Xiong, Pa N. "Polyamines for Separation of Rare Earth Elements and Carbon Dioxide Sequestration." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1468326121.

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14

Mehta, Brinda Mayank. "Green Resins based on Alkene- and Alkyne-containing Triglycerides." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1468795161.

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15

Ji, Yuyang. "GIANT MOLECULES BASED ON PERYLENE DIIMIDES: SYNTHESIS, CHARACTERIZATION AND SELF-ASSEMBLY BEHAVIORS." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491238979529549.

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16

Zhu, Linhui. "SYNTHESIS OF ZWITTERIONIC NICKEL CATALYSTS FOR CARBONYLATIVE POLYMERIZATIONS." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555680685795698.

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17

Fuller, Kristin M. "Bridging the Gap: Developing Synthetic Materials with Enzymatic Levels of Complexity and Function." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1595941048642725.

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18

Yi, Chao. "Towards High Performance Polymer Solar Cells Through Interface Engineering." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367597024.

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19

Monemian, Seyedali. "Tuning Mechanics of Bio-Inspired Polymeric Materials through Supramolecular Chemistry." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1467882025.

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20

Razgoniaev, Anton. "Design, synthesis, and characterization of photoresponsive materials usingcoordination bonds and other supramolecular interactions." Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510918007338796.

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21

Piaoran, Ye. "Synthesis of Polymers and Polymer Brushes through RAFT Polymerization via Flow Chemistry." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1491229581133419.

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22

Pereira, Marcia Rodrigues. "FTIR-ATR studies on polymer/polymer and polymer/liquid interfaces." Thesis, Durham University, 1994. http://etheses.dur.ac.uk/5551/.

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Fourier Transform Infrared Attenuated Total Reflection Spectroscopy (FTIR-ATR) has been employed to study polymer laminates composed of poly (methylmethacrylate) (PMMA) and poly(vinyl alcohol) (PVOH) using different base layer thicknesses and different angles of incidence on a ZnSe substrate. By varying the "barrier" layer of PMMA it has been confirmed that different effective penetration depths into the PVOH are achieved, in very good agreement with the calculated electric field as a function of distance away from the substrate surface. These results show that the two-layered model system can be successfully employed to provide a semi-quantitative depth profile of the laminate. Following the FTIR-ATR study on polymer/polymer interface we have demonstrated how the evanescent field absorption from a IR beam can also be used to monitor in situ the molecular interaction at polymer/liquid interfaces. The chosen system was a series of sulphonated polyethersulphones (SPES) and water. The v(_s)(SO(_3)) and V(_a)(SO(_3)) vibrational modes were monitored as the degree of hydration was varied. It has been found that the v(_3)(SO(_3)) mode increases with hydration suggesting that, with hydration the sulphonic acid groups of SPES are dissociated into SO(_3) ions. It has been found that changes also occur in the benzene ring vibrational band that are dependent on the degree of hydration. Spectral subtraction has been employed to highlight changes in the V(_a)(SO(_3)) mode which were not readily observed in the raw spectra due to overlapping bands. The particular behaviour of V(OH) vibrational mode of water molecules has also been analysed. The main conclusion in this case was that the average hydrogen bond strength of the sorbed water is considerable lower than that in pure water. This would favour an efficient flux of water through the membrane. A method based on monitoring the time dependent change in the v(OH) mode of water has been developed to calculate the diffusion of water on SPES membranes. After reaching a steady state, the normalised absorbance plot versus time has been used for numerical evaluation. Two models have been developed, one for Fickian diffusion and another for the dual sorption mode. The experimental results show a much better agreement for the second model. The diffusion coefficient values have been calculated for different samples and interesting variations of the diffusion coefficient as a function of sulphonation level, solvent and film thickness have been analysed in detail.

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23

Bilger, David William. "Multi-Scale Assembly Methodologies of Poly(3-hexylthiophene) Derivative Systems for Enhanced Optoelectronic Anisotropy." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1768.

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Conjugated polymers represent a class of semi-conducting materials with numerous applications in optoelectronic devices, including organic light-emitting diodes, field-effect transistors, and photovoltaics. Because of the numerous advantages of macromolecular systems, including solution processing and mechanical flexibility, conjugated polymers have become a burgeoning field of research with the hopes of producing cost-effective solution-based electronics. Importantly, optoelectronic device performance is heavily influenced by conjugated polymer backbone orientation and overall thin film morphology. As such, the processing conditions of these systems are important to the construction of high- performance optoelectronics. Polythiophenes are model conjugated polymers that have been studied extensively in halogenated organic solvents. However, the self- assembly of these systems from dilute solution to the solid state remains ambiguous for solvents with high dielectric constants. Here, two derivative compounds of poly(3-hexylthiophene) are correspondingly investigated in high dielectric solvents by way of ultraviolet-visible absorption and fluorescence spectroscopy, Fourier transform infrared spectroscopy, small-angle X-ray scattering, polarized optical microscopy, and four- point probe conductivity measurements. In dilute solutions, both systems are found to undergo self-assembly when exposed to various stimuli, including temperature, solvent composition, and side-chain characteristics. The kinetics of these transitions are investigated, and a model is put forth to explain contrasting self-assembly mechanisms. At higher concentrations, both systems form lyotropic liquid crystalline phases. Characteristics of the liquid crystalline phases are found to be heavily influenced by dilute solution self-assembly mechanisms and processing. Through the application of a mechanical shear force along still-wet liquid crystal films, alignment of the polythiophene long axis is attained. This morphological characteristic is found to carry over to the solid-state for both systems, and clear optoelectronic anisotropy of the thin films is observed. As such, these methodologies may provide a route to the production of environmentally friendly high-performance optoelectronic devices.

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24

Joyce, Steven John. "The topological trapping of cyclic polymers into polymer networks." Thesis, University of York, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306470.

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25

Qu, Haoran. "SOLUTION SELF-ASSEMBLY OF HEXAETHYLENE GLYCOL-FUNCTIONALIZED POLYHEDRAL OLIGOMERIC SILSESQUIOXANE (GPOSS) TETHERED WITH POLYSTYRENE CHAIN." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1486638275556455.

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26

Li, Mingxuan. "Self-Assemble of Novel Discotic Nano-Molecules Based on Polyhedraloligomericsilsesquioxanes." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399242960.

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27

Wang, Yi. "The Synthesis and Characterization of Amphiphilic Poly(Ethylene Oxide)-Block-Poly(Octadecyl Acrylate) Block Copolymers." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399491109.

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28

Zhu, Sunsheng. "Novel Approach to Polyhedral Oligmeric Silsesquioxane-Based Giant Surfactants Basd on Thiol-Michael Addition "Click" Reaction." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1399555570.

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29

Chu, Yang. "Enhancement of Photocatalytic Activity by Site Poisoning Platinum Doped Titanium Dioxide." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1417454495.

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30

Chen, Junyi. "Oligo(ß-Alanine)-Grafted Butyl Rubber (IIR) with Mixed O(ligo(ß-Alanine) Lengths." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1427827046.

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31

Liu, Jianning. "Stress Relaxation Behavior of Polymer Glasses in Both Extension and Compression." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1427995606.

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32

Shi, Feimo. "A THERMO- AND LIGHT- SENSITIVE STAR-LIKE COPOLYMER: DESIGN, SYNTHESIS, AND POTENTIAL APPLICATION FOR DRUG DELIVERY SYSTEM." Case Western Reserve University School of Graduate Studies / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=case1428072959.

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33

Zhong, Weijie. "The Effect of Hydrophilic Monomer in Core-shell Latex." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1436453067.

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34

HE, ZHOUYING. "ORGANIC/INORGANIC HYBRID COATINGS FOR ANTICORROSION." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1437870016.

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35

Pangilinan, Katrina Dayoan. "Layer-by-Layer and Photochemical Grafting of ATRP Initiators for Thermoresponsive Surfaces." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1448375686.

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36

Michal, Brian. "Multi-Functional Stimuli-Responsive Polymers." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1459440396.

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37

Sun, Jian. "Molecular Janus Particles Based On Functionalized [60]Fullerenes: Precise Synthesis And Self-Assembly Behaviors In Solution." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460373051.

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38

Stilke, Morgan A. "Diffusive and Deformation Behavior of Physically Crosslinked Hydrogels." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460384954.

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39

Ji, Xiang Ji. "THE INFLUENCE OF ASSEMBLY PH AND CLAY INCLUSION ON THE ACTUATION OF POLYELECTROLYTE MULTILAYERS." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1468526322.

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40

Zhang, Zeyang. "INTERFACIAL FREE RADICAL POLYMERIZATION OF MALEIC AND 1,4-CYCLOHEXANEDIMETHYANOL DIVINYL ETHER." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1468681937.

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41

Chamsaz, Elaheh Anna. "Design and Applications of Biodegradable and Photoresponsive Polymers based on Alkoxyphenacyl and Coumarin Moieties." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1490015846298687.

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42

Yang, Xing. "Synthesis and Self-assembly of Giant Shape Amphiphiles Based on Rod-like Polymers and Precisely Functionalized Fullerenes." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491576298738033.

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43

CHEN, RUISI. "A Viscosity Modifier: Oligo(¿-Alanine) End-Functionalized Polypropylene." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1491609493145333.

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44

Zhang, Zhongbo. "Understanding Ferroelectricity in Nylon Homopolymers, Copolymers, and Terpolymers." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1521638812926921.

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45

Li, Zhuoran. "Synthesis and Characterization of Functionalized Polyurethanes with Hydrophilic Moieties." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1522851826350018.

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46

Xie, Shaoxiong. "COMPARATIVE STUDY ON TIP/TIA/ZRP/TEOS MODIFIED EPOXIDES RESIN: ANTI-CORROSION PERFORMANCE." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1534159109126582.

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47

Yuan, Yichun. "Optimized Synthesis of SO2-PIM for Potential Applications in Flexible Electronic Devices." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1553868388453831.

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48

Liang, Honghe. "Synthesis and Characterization of A New Catechol Derived Coupling Agent." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1555671275779722.

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49

Ling, Zichen. "ION EFFECTS ON SELF-HEALING POLY(ACRYLIC ACID) AND POLY(METHACRYLIC ACID) GELS." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1556767022932537.

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50

Cobaj, Anisa. "The Effects of Urethane Methacrylates on the Film Properties of Acrylic-Urethane Hybrid Latexes." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1560335362557041.

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