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Open Chemistry

formerly Central European Journal of Chemistry


IMPACT FACTOR 2018: 1.512
5-year IMPACT FACTOR: 1.599

CiteScore 2018: 1.58

SCImago Journal Rank (SJR) 2018: 0.345
Source Normalized Impact per Paper (SNIP) 2018: 0.684

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Online
ISSN
2391-5420
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Band 11, Heft 12

Hefte

Volume 13 (2015)

Shape memory polyurethanes based on recycled polyvinyl butyral. I. Synthesis and morphology

Tsvetomir Tsonev / Michael Herzog / Sanchi Nenkova
Online erschienen: 26.09.2013 | DOI: https://doi.org/10.2478/s11532-013-0331-3

Abstract

Shape memory polyurethanes (SMPUs) were synthesized by 4,4′-diphenylmethane diisocyanate (MDI), hexane-1,6-diol (HD), polypropylene glycol (PPG), and recycled polyvinyl butyral (PVB). Dynamic mechanical analysis, differential scanning calorimetry and Fourier transformation infrared attenuated total reflection spectroscopy was used to characterize the poly (vinylbutyral-urethanes). Micro-phase domain separation of hard and soft segments and phase inversion were investigated. Increasing the hard segment content, i.e., average hard segment molecular weight, leads to an increase in the degree of micro-phase separation, hard domain order and crystallinity. The crystalline hard segment structures combined with the elastic nature of soft segment matrix provide enough physical and chemical crosslinks to have shape memory effect.

Keywords: Polyvinyl butyral; Shape memory; Polyurethanes; Thermal analysis; IR spectroscopy

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Artikelinformationen

Online erschienen: 26.09.2013

Erschienen im Druck: 01.12.2013


Quellenangabe: Open Chemistry, Band 11, Heft 12, Seiten 2058–2065, ISSN (Online) 2391-5420, DOI: https://doi.org/10.2478/s11532-013-0331-3.

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© 2013 Versita Warsaw. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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