Results 31 to 40 of about 292,954 (197)

Impacts of Photooxidation on Commercially Available Homo and Copolymers of Polypropylene on Their Microstructure and Mechanics: A Cross‐Sectional Analysis

Nano Select
Polyolefin degradation is widely studied to assess the lifetime of packaging materials. In this work, a combination of bulk (DSC, GPC, 13C‐NMR, XRD), surface (FTIR) and cross‐sectional characterization (Raman spectroscopy and nanoindentation) was used to
Marta Chiapasco, Michele Valsecchi, Gavin Hill, Christopher Wallis, Alexandra E. Porter, Finn Giuliani   +5 more
doaj   +1 more source

Synthesis, Purification and Characterization of Polymerizable Multifunctional Quaternary Ammonium Compounds

Molecules, 2019
Methacrylate analogs of quaternary ammonium salts functionalized with carboxylic (AMadh1 68.8% yield, AMadh2 53.2% yield) and methoxysilane (AMsil1 94.8% yield, AMsil2 36.0% yield) groups were synthesized via Menschutkin reaction.
Ugochukwu C. Okeke, Chad R. Snyder, Stanislav A. Frukhtbeyn   +2 more
doaj   +1 more source

Carbon dioxide-based copolymers with various architectures

Progress in polymer science, 2018
This review highlights recent advances in the synthesis of carbon dioxide (CO 2 )-based copolymers with both linear (di-, tri-, and multi-block, etc.) and non-linear (star-block and grafting) architectures.
Yang Li, Ying-Ying Zhang, Lan-fang Hu, Xing-hong Zhang, B. Du, Junting Xu   +5 more
semanticscholar   +1 more source

Antimicrobial Graft Copolymer Gels [PDF]

Biomacromolecules, 2016
In view of the growing worldwide rise in microbial resistance, there is considerable interest in designing new antimicrobial copolymers. The aim of the current study was to investigate the relationship between antimicrobial activity and copolymer composition/architecture to gain a better understanding of their mechanism of action.
Harvey, A.C., Madsen, J., Douglas, C.W., MacNeil, S., Armes, S.P.   +4 more
openaire   +5 more sources

‘CONRAD’ copolymers via condensation and radical polymerization: Is this approach realistic?

eXPRESS Polymer Letters, 2022
editorial
Stoyko Fakirov
doaj   +1 more source

Supramolecular Block Copolymers under Thermodynamic Control

Journal of the American Chemical Society, 2018
Supramolecular block copolymers are becoming attractive materials in nascent optoelectronic and catalytic technologies. However, their dynamic nature precludes the straightforward tuning and analysis of the polymer’s structure.
B. Adelizzi, Antonio Aloi, A. J. Markvoort, H. T. ten Eikelder, I. Voets, A. Palmans, E. Meijer   +6 more
semanticscholar   +1 more source

An Optimized Fibril Network Morphology Enables High‐Efficiency and Ambient‐Stable Polymer Solar Cells

Advanced Science, 2020
Morphological stability is crucially important for the long‐term stability of polymer solar cells (PSCs). Many high‐efficiency PSCs suffer from metastable morphology, resulting in severe device degradation.
Jiali Song, Linglong Ye, Chao Li, Jinqiu Xu, Sreelakshmi Chandrabose, Kangkang Weng, Yunhao Cai, Yuanpeng Xie, Padraic O'Reilly, Kai Chen, Jiajia Zhou, Yi Zhou, Justin M. Hodgkiss, Feng Liu, Yanming Sun   +14 more
doaj   +1 more source

Discussion on “Aperiodic Copolymers” [PDF]

ACS Macro Letters, 2015
In a recent Viewpoint (ACS Macro Lett. 2014, 3, 1020), J.-F. Lutz brought to the community's attention the need for more informative nomenclature, especially with respect to macromolecules with prescribed but not repeating sequences of monomers. Lutz proposes the use of the term "aperiodic" for this situation.
Rowan, Stuart J., Barner-Kowollik, Christopher, Klumperman, Bert, Gaspard, Pierre, Grubbs, Robert B., Hillmyer, Marc A., Hutchings, Lian R., Mahanthappa, Mahesh K., Moatsou, Dafni, O'Reilly, Rachel K., Ouchi, Makoto, Sawamoto, Mitsuo, Lodge, Timothy P.   +12 more
openaire   +4 more sources

Advances in Microbial and Plant-Based Biopolymers: Synthesis and Applications in Next-Generation Materials

Macromol
Biopolymers are revolutionizing the materials landscape, driven by a growing demand for sustainable alternatives to traditional petroleum-based materials.
Poova Kattil Drishya, M. Venkateswar Reddy, Gunda Mohanakrishna, Omprakash Sarkar, Isha, M. V. Rohit, Aesha Patel, Young-Cheol Chang   +7 more
doaj   +1 more source

Study of hygral behavior of non-asbestos fiber cement made by similar hatschek process [PDF]

Materials Research, 2013
Fiber cement, similarly to all cementitious materials, undergoes dimensional and volumetric changes when it is exposed to dry and wet environments. When exposed to natural weathering, cement-based materials absorbs and may also release water to their ...
Carlos Eduardo Marmorato Gomes, Holmer Savastano Jr   +1 more
doaj   +1 more source