Výsledky vyhledávání - "Garth L. Wilkes"

Temperature-dependent changes in the hydrogen bonded hard segment network and microphase morphology in a model polyurethane: Experimental and simulation studies

Autor: Iskender Yilgor, Erol Yildirim, Garth L. Wilkes, Mine Yurtsever, Emel Yilgor

Publikováno v: Journal of Polymer Science Part B: Polymer Physics. 56:182-192

Hydrogen bonding between hard segments has a critical effect on the morphology and properties of polyurethanes. Influence of temperature on hydrogen bonded urethane network and melting behavior of a model semicrystalline segmented polyurethane was in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a06076485e483495b22743d26f74688
https://doi.org/10.1002/polb.24532

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Synthesis of Polysulfone-Containing Poly(butylene terephthalate) Segmented Block Copolymers: Influence of Segment Length on Thermomechanical Performance

Autor: Robert B. Moore, Nicholas G. Moon, Ryan J. Mondschein, Joseph M. Dennis, Gregory B. Fahs, Timothy Edward Long, Garth L. Wilkes

Publikováno v: Macromolecules. 50:5107-5113

A facile synthesis of hydroxyethyl-functionalized poly(ether sulfone) (PESu) oligomers permitted subsequent melt transesterification into segmented block copolymers with poly(butylene terephthalate). The unique solubility of the PESu oligomers in the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f9e87cc694a6524c31687954bbd5a26
https://doi.org/10.1021/acs.macromol.7b00557

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Synthesis and Properties of Segmented Polyurethanes with Triptycene Units in the Soft Segment

Autor: Amanda G. Hudson, E. Bruce Orler, Gregory B. Fahs, Garth L. Wilkes, Robert B. Moore, Zhengmian Chang, S. Richard Turner

Publikováno v: Macromolecular Chemistry and Physics. 216:1180-1191

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8a276ec1429ee633e57ed4c3d42489a
https://doi.org/10.1002/macp.201500024

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Critical parameters in designing segmented polyurethanes and their effect on morphology and properties: A comprehensive review

Autor: Emel Yilgor, Iskender Yilgor, Garth L. Wilkes

Publikováno v: Polymer. 58:A1-A36

A comprehensive discussion is provided of the critical physical, chemical and structural parameters, such as soft and hard segment structures and their molecular weights, polymer composition, solubility parameters, competitive intermolecular interact

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b4afc65f844d7122f18ce1aa81607082
https://doi.org/10.1016/j.polymer.2014.12.014

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Understanding the influence of hydrogen bonding and diisocyanate symmetry on the morphology and properties of segmented polyurethanes and polyureas: Computational and experimental study

Autor: Selim Sami, Erol Yildirim, Emel Yilgor, Garth L. Wilkes, Ersin Yurtsever, Iskender Yilgor, Mine Yurtsever

Publikováno v: Polymer. 55:4563-4576

Quantum mechanical calculations (QMC) and dissipative particle dynamics (DPD) simulations were utilized to understand the nature of the short and long-range hydrogen bonding and its influence on the microphase morphology in segmented polyurethanes an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc96942e039ecc518a5e0b7a3670e184
https://doi.org/10.1016/j.polymer.2014.07.028

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Synthesis and properties of segmented polyurethanes with triptycene units in the hard segment

Autor: S. Richard Turner, Mingqiang Zhang, Robert B. Moore, Zhengmian Chang, Amanda G. Hudson, Garth L. Wilkes, E. Bruce Orler

Publikováno v: Polymer. 54:6910-6917

Segmented polyurethanes based on polytetramethylene glycol (PTMG) of 1000 g/mol were synthesized using a two-step polymerization procedure. Various hard segments were obtained using hexamethylene diisocyanate (HDI) or 4,4′-methylenebis(phenyl isocy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::257cc1ca509b835675157d68051fd2f9
https://doi.org/10.1016/j.polymer.2013.10.028

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The effect of varying soft and hard segment length on the structure–property relationships of segmented polyurethanes based on a linear symmetric diisocyanate, 1,4-butanediol and PTMO soft segments

Autor: Garth L. Wilkes, Mingqiang Zhang, Derek B. Klinedinst, Iskender Yilgor, Emel Yilgor

Publikováno v: Polymer. 53:5358-5366

Thermoplastic segmented polyurethanes which are based on poly(tetramethylene oxide) (PTMO) soft segment, linear symmetric para-phenylene diisocyanate (pPDI), and chain extended with 1,4-butanediol (BD) are discussed. The effect of variation of the so

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6fb4d4e092e0f2e615a0a100fa42834
https://doi.org/10.1016/j.polymer.2012.08.005

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Micro-phase Separation via Spinodal-like Decomposition in Hexamethylynediisocyanate (HDI)-polyurea

Autor: Garth L. Wilkes, Gregory Beaucage, Amit S. Kulkarni, Iskander Yilgor, Sudipto Das

Publikováno v: Journal of Inorganic and Organometallic Polymers and Materials. 22:624-628

Micro-phase separation in hexamethylynediisocyanate-polyurea was studied using small-angle X-ray scattering and infrared absorption. It was found that phase separation in this system followed spinodal-like decomposition on a 3–4 nm size scale with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fe2bf7337c1b7b16ecccf965dd71ab25
https://doi.org/10.1007/s10904-012-9669-9

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