Results 131 to 140 of about 126,507 (309)

Automation of the Azapeptide Submonomer Synthesis Method [PDF]

J Pept Sci
The solid phase submonomer azapeptide synthesis method was automated using a commercially available peptide synthesizer. Key findings for the successful automation included the use of stable isocyanate precursor for the semicarbazone installation step, elimination of all cooling steps, use of a heating block, and use of DMF as solvent.
Hobart T, Helton M, Bowles M, Proulx C.
europepmc   +2 more sources

Methyl isocyanate [PDF]

, 2011
Izocyjanian metylu (MIC) jest lotną, bezbarwną cieczą o ostrym, nieprzyjemnym zapachu, którą stosuje się głównie do syntezy insektycydów i herbicydów z grupy metylokarbaminianów, pianek poliuretanowych oraz tworzyw sztucznych.
Czerczak, S., Soćko, R.
core  

Rheological Assessment of Polymer Melts and Networks: From Degradation to Recyclability

Macromolecular Rapid Communications, EarlyView.
Rheology provides a powerful analytic tool for tracking polymer degradation and structural evolution across manufacturing, service, and recycling. Linear and nonlinear rheological techniques reveal changes in molecular architecture, network stability, and processing history.
Haocong Shi, Chongkai Zhao, Zaheer ul Haq, Shifeng Wang, Chaoying Wan   +4 more
wiley   +1 more source

Analysis of Carbohydrates and Glycoconjugates by Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry: An Update for 2023–2024

Mass Spectrometry Reviews, EarlyView.
ABSTRACT The use of MALDI mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this comprehensive review is the twelfth update of the original article published in 1999 and brings coverage of the literature to the end of 2024.
David J. Harvey
wiley   +1 more source

Wear‐Activated Surface Engineering of Thermoplastic Polyurethane/Graphene Nanoplatelet Nanocomposites for Ice Friction Control

Polymer Composites, EarlyView.
Wear‐activated surface engineering of TPU/GNP nanocomposites through improved filler dispersion and interfacial anchoring of functionalized graphene nanoplatelets, leading to finer post‐abrasion textures and enhanced ice traction. ABSTRACT Graphene‐reinforced thermoplastic polyurethane (TPU) composites offer a promising route for developing ...
Sara Zahmatkesh, Siu‐Ning Leung, Reza Rizvi   +2 more
wiley   +1 more source

Techno-economic Analysis and Life Cycle Assessment of Biomass-Derived Polyhydroxyurethane and Non-Isocyanate Polythiourethane Production and Reprocessing [PDF]

Non-isocyanate polyurethanes (NIPUs) show promise as more sustainable alternatives to conventional, isocyanate-based polyurethanes (PUs). In this study, polyhydroxyurethane (PHU) and non-isocyanate polythiourethane (NIPTU) production and reprocessing ...
John, Torkelson, Yixuan, Chen, Jennifer, Dunn, Yasheen, Jadidi, Troy, Hawkins, Chloe, Liang, Ulises, Gracida-Alvarez   +6 more
core   +2 more sources

Tuning Degradation of Polylactic Acid via Size‐Controlled Silica Nanoparticles

Polymer Engineering &Science, EarlyView.
Particle size emerges as a simple handle to program polymer degradation. By tailoring the size of silica nanoparticles, the degradation behavior of polylactide composites can be directed towards accelerated hydrolysis or enhanced composting‐induced disintegration without changing the polymer chemistry.
Xiangyu Zhu, Mark A. Hempenius, Hubert Gojzewski, Frederik R. Wurm   +3 more
wiley   +1 more source

Diverse reactivity of maleimides in polymer science and beyond

Polymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick, Kristi S Anseth, Tayler S Hebner   +2 more
wiley   +1 more source

Synthesis of an isocyanate-functionalized terpyridine as building block for metallo-supramolecular polymers

, 2004
An amino-pentyl-functionalized terpyridine was converted to the corresponding isocyanate, which could be crystallized and studied by X-ray diffraction. The isocyanate-functionalized terpyridine was utilized as a reactive building block for the formation ...
Schubert, U.S., Hoogenboom, R., Kickelbick, G., Andres, P.R., Richard Hoogenboom, Ulrich S. Schubert, Guido Kickelbick, Philip R. Andres   +7 more
core   +1 more source

In Situ Curing‐Enabled 3D Printing of Continuous Fiber‐Reinforced Thermosetting Composites

Journal of Polymer Science, EarlyView.
In situ curing‐enabled the 3D printing of continuous fiber/thermoset composites, which were reviewed. Particularly, four types of in situ curing, were discussed, including Radiation‐induced curing, photothermal curing, electrothermal curing, and frontal polymerization. AI‐integrated printing was also analyzed.
Xiaofei Wu, Harrison Hayworth, Shiren Wang   +2 more
wiley   +1 more source