WebTéléchargez notre application gratuite. Traduction Context Correcteur Synonymes Conjugaison Documents Dictionnaire Dictionnaire Collaboratif Grammaire Expressio Reverso Corporate Plus WebAug 27, 2024 · A method for measuring the depolymerization time by quartz crystal microbalance has been developed. The copolymer of phthalaldehyde and butanal improves the evaporation time for the polymer by a factor of 11. The onset of thermal decomposition of the copolymer was increased from 107 C for the phthalaldehyde homopolymer to 141 …
Did you know?
WebHector Lopez Hernandez. Department of Mechanical Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana … WebJan 15, 1997 · It is demonstrated that a cationic polymerization of o-phthalaldehyde initiated by boron trifluoride results in cyclic PPA in high yield, with high molecular weight, and with …
WebJul 1, 2024 · Further, even though the polymer sublimates when exposed to the EUV radiation, eliminating the need to apply a wet development step, crosslinking at high doses causes deposition of ... Phototriggered Depolymerization of Flexible Poly(phthalaldehyde) Substrates by Integrated Organic Light-Emitting Diodes. Kyung Min Lee, O. Phillips, A ... Poly(phthalaldehyde), abbreviated as PPA, is a metastable stimuli-responsive polymer first synthesized in 1967. It has garnered significant attention during the past couple of years due to its ease of synthesis and outstanding transient and mechanical properties. for this reason, It has been exploited for a … See more Poly(phthalaldehyde) was first reported in 1967 by Chuji Aso and Sanae Tagami from the department of Organic Synthesis at Kyushu University by an addition homopolymerization reaction of aromatic o-phthalaldehyde (Figure … See more PPA is a metastable polymer known for its ease of synthesis and rapid depolymerization. In addition, its properties can be easily influenced and manipulated upon either functionalizing the phthalaldehyde monomer with different groups, most … See more According to the safety data sheet of PPA, it should not be allowed in contact with the skin or eyes as it may lead to skin, eye, and respiratory irritations or allergic reactions. In addition, as some … See more Since its first inception in 1967, many synthesis techniques have been developed and employed for the polymerization of o-phthalaldehyde. Most notably, living polymerization methods … See more Depending on the polymerization technique applied, two different types of poly(phthalaldehyde) can be acquired, linear and cyclic (see Figure 1). In this section, the … See more Due to its unique stability, chemical properties, and outstanding tunability and reactivity, PPA has been employed in a variety of applications. Photoresist The high solubility and stability of PPA in organic solvents … See more
WebAug 12, 2024 · 1. Introduction. Transient devices are an emerging field of research, where polymer films with a limited lifetime are formed through use of degradable materials [].Poly(phthalaldehyde) (PPHA) is of interest for transient devices because it is metastable at room temperature and its decomposition can be triggered by external stimuli [, , , , ].
WebOct 20, 2014 · Hector Lopez Hernandez. Department of Mechanical Science and Engineering, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801 USA
WebDec 30, 2024 · Sacrificial Cyclic Poly(phthalaldehyde) Templates for Low-Temperature Vascularization of Polymer Matrices Mayank Garg Beckman Institute for Advanced … pool party loot bag ideasWebAug 28, 2013 · In this report, we demonstrate that a cationic polymerization of o-phthalaldehyde initiated by boron trifluoride results in cyclic PPA in high yield, with high … share code reference numberWebAug 29, 2024 · UV-Triggered Transient Electrospun Poly(propylene carbonate)/Poly(phthalaldehyde) Polymer Blend Fiber Mats ACS Appl Mater Interfaces . 2024 Aug 29;10(34):28928-28935. doi: 10.1021/acsami.8b06051. share code rights to workWebAug 11, 2014 · Kinetic Analysis of Mechanochemical Chain Scission of Linear Poly(phthalaldehyde) Gregory I. Peterson, Gregory I. Peterson. Department of Chemistry, University of Washington, Seattle, WA, 98195 USA. Search for more papers by this author. Andrew J. Boydston, Corresponding Author. sharecode right to rentWebJan 16, 2024 · Cyclic Poly (phthalaldehyde): Thermoforming a Bulk Transient Material. ACS Macro Lett. 2024 Jan 16;7 (1):47-52. doi: 10.1021/acsmacrolett.7b00769. Epub 2024 Dec 15. share code pythonWebDec 28, 2024 · Cyclic-poly(phthalaldehyde) (cPPHA) exhibits photo-triggerable depolymerization on-demand for applications like the photolithography of microfabricated … share code right toWebSep 4, 2024 · A promising transient polymer is cyclic poly-(phthalaldehyde) (cPPA), which has a room temperature storage modulus of 1.5−2 GPa 12 and is prepared in a scalable, one-step cationic polymerization ... share code right to rent checker