Colorimetric differentiation of polyester-and polyether-based urethane polymers
نویسندگان
چکیده
منابع مشابه
Development of biodegradable crosslinked urethane-doped polyester elastomers.
Traditional crosslinked polyester elastomers are inherently weak, and the strategy of increasing crosslink density to improve their mechanical properties makes them brittle materials. Biodegradable polyurethanes, although strong and elastic, do not fare well in dynamic environments due to the onset of permanent deformation. The design and development of a soft, strong and completely elastic (10...
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Sulfonyl-containing aromatic polymers DSPE, DSPET, DSPA, and DSPI consisting of a triphenylamine moiety were synthesized and the memory behavior was investigated. By choosing the suitable linkage between the electron donor and acceptor, tunable memory properties (from insulator to different retention time SRAM) could be achieved.
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Hydrophobically modified ethoxylated urethanes have been synthesized using polyethylene glycol, hexamethylene diisocyanate and cetyl alcohol. These types of thickeners are categorized as nonionic associative thickeners. The HEURs were prepared in two steps. Initially an ethoxylated urethane prepolymer was synthesized through a reaction between a polyethylene glycol (Mn=6000) and hexamethylene d...
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Hydroxychloroquine (HCQ) has been shown to demonstrate anti-inflammatory properties and direct anti-HIV activity. In this study, we describe for the first time the fabrication and in vitro evaluation of two types of intravaginal ring (IVR) devices (a surfaced-modified matrix IVR and a reservoir segmental IVR) for achieving sustained delivery (>14 days) of HCQ as a strategy for preventing male-t...
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We have recently reported upon the development of crosslinked urethane-doped polyester (CUPE) network elastomers, which was motivated by the desire to overcome the drawbacks presented by crosslinked network polyesters and biodegradable polyurethanes for soft tissue engineering applications. Although the effect of the isocyanate content and post-polymerization conditions on the material structur...
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ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 1959
ISSN: 0021-8995,1097-4628
DOI: 10.1002/app.1959.070010219