Results 131 to 140 of about 71,335 (344)

WATER INFLUENCE IN POLY(EPICHLOROHYDRIN) SYNTHESIS: AN INTERMEDIATE TO ENERGETIC PROPELLANTS DOI 10.5028/jatm.2012.04016011

open access: yesJournal of Aerospace Technology and Management, 2012
Poly(epichlorohydrin) was synthesized using anhydrous and hydrate stannic chloride, separately, as initiator. Reactions were conducted in the presence of a diol at 70o C.
Jairo Sciamareli   +2 more
doaj  

Novel "green" catalysts for controlled ring-opening polymerization of lactide [PDF]

open access: yes, 2010
Syntéza polylaktidu (PLA) polymerací za otevření kruhu cyklického monomeru (ROP) může být uskutečněna různými způsoby. Literatura uvádí více než 100 katalytických systémů, jejichž pomocí lze polylaktid a jiné biodegradabilní alifatické polyestery získat.
Surman, František
core  

Stimuli‐Responsive Afterglow from Luminescent Liquid Crystal Elastomers

open access: yesAdvanced Materials, EarlyView.
An active glow luminescent system for encoding, signaling, and tracking in dark environments has been developed by integrating inorganic ultralong afterglow phosphors with adaptive liquid crystal elastomer actuators. Abstract Stimuli‐responsive luminescent polymeric materials which combine afterglow emission with mechanical flexibility and adaptability
Lansong Yue   +2 more
wiley   +1 more source

A Degradable Device for Sustainable Capillary Blood Sampling

open access: yesAdvanced Materials Technologies, EarlyView.
The device features a compostable 3D‐printed storage compartment for liquid blood collection and a degradable, poly(ɛ‐caprolactone)‐coated magnesium microneedle patch hidden within a suction cup. Manual compression deploys the MNs, creating small skin punctures, and the subsequent release of compression generates the negative pressure required for ...
Nicole Zoratto   +5 more
wiley   +1 more source

Biodegradable nanocomposite for food packaging application [PDF]

open access: yes, 2014
Biodegradable poly(lactic) acid (PLA)/clay nanocomposites were investigated to be used as food packaging material. Several techniques were used, rheology, mechanical, gel permeation chromatography (GPC), contact and biodegradability tests, to ...
Abreu, Ana S.   +4 more
core  

Harnessing Carbenoid Reactivity From Imidazoles and Oxiranes

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
The combination of azole compounds and oxiranes exhibits carbenoid reactivity at elevated temperatures, as demonstrated by the successful benzoin condensation of aromatic aldehydes. Using this catalytic system to polymerize bifunctional aldehyde/oxirane monomers yields thermosets with glass transition temperatures above 100°C.
Matthias R. Steiner   +4 more
wiley   +1 more source

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