Photosensitization of polymer vesicles: a multistep chemical process deciphered by micropipette manipulation

Belousov-Zhabotinsky (B-Z) reaction driven polymerization-induced self-assembly (PISA), or B-Z PISA, is a novel method for the autonomous one-pot synthesis of polymer vesicles from a macroCTA (macro chain transfer agent) and monomer solution (“soup”) containing the above and the BZ reaction components. In it, the polymerization is driven (and controlled) by periodically generated radicals generated in the oscillations of the B-Z reaction. These are inhibitor/activator radicals for the polymerization. Until now B-Z PISA has only been carried out in batch reactors. In this manuscript we present the results of running the system using a continuously stirred tank reactor (CSTR) configuration which offers some interesting advantages.Indeed, by controlling the CSTR parameters we achieve reproducible and simultaneous control of the PISA process and of the properties of the oscillatory cargo encapsulated in the resulting vesicles. Furthermore, the use of flow chemistry enables a more precise morphology control and chemical cargo tuning. Finally, in the context of biomimetic applications a CSTR operation mimics more closely the open non-equilibrium conditions of living systems and their surrounding environments.

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A Study of High Accident Risk for Chemical Process

Korean Journal of Hazardous Materials ◽

10.31333/kihm.2018.6.1.63 ◽

2018 ◽

Vol 6 (1) ◽

pp. 63-70

Author(s):

Dong Hoon Lee ◽

Yong Taek Ju ◽

heon kim ◽

Kyo Shik Park

Keyword(s):

Chemical Process ◽

Accident Risk

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HASTELLOY ALLOY B-2

Alloy Digest ◽

10.31399/asm.ad.ni0249 ◽

1977 ◽

Vol 26 (9) ◽

Keyword(s):

Corrosion Resistance ◽

High Temperature ◽

Physical Properties ◽

Stress Corrosion Cracking ◽

Heat Affected Zone ◽

Chemical Process ◽

Heat Treating ◽

Cabot Corporation ◽

Temperature Performance ◽

Excellent Corrosion Resistance

Abstract HASTELLOY alloy B-2 has outstanding corrosion resistance in the as-welded condition. It is an improved wrought version of HASTELLOY alloy B with the same excellent corrosion resistance as alloy B, but with improved resistance to knife line and heat-affected zone attack. Alloy B-2 resists the formation of grain-boundry carbide precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. This alloy also has excellent resistance to pitting and stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-249. Producer or source: Stellite Division, Cabot Corporation.

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ATI 425

Alloy Digest ◽

10.31399/asm.ad.ti0133 ◽

2004 ◽

Vol 53 (7) ◽

Keyword(s):

Fracture Toughness ◽

Chemical Process ◽

Aerospace Industry ◽

Processing Parameters ◽

Process Industry ◽

Hot Workability ◽

Chemical Process Industry ◽

Armor Plate ◽

Ballistic Protection ◽

Hot Rolled

Abstract ATI 425 was originally developed for hot-rolled armor plate to provide ballistic protection comparable to Ti-6Al-4V and has been evaluated against a variety of projectile threats for use as armor. While processing the alloy for armor plate applications, it was observed that the material exhibited very good hot workability, permitting a more lenient window of processing parameters than necessary for Ti-6Al-4V. Versatility then expanded, and applications now exist in the chemical process industry (CPI) and in the aerospace industry. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance. Filing Code: TI-133. Producer or source: ATI Wah Chang, Allegheny Technologies. Originally published March 2004, revised July 2004.

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CABOT TANTALUM

Alloy Digest ◽

10.31399/asm.ad.ta0011 ◽

1989 ◽

Vol 38 (2) ◽

Keyword(s):

Chemical Process ◽

Heat Treating ◽

Electronics Industry ◽

Process Equipment ◽

Vacuum Furnace ◽

Alloying Element ◽

High Melting Point ◽

Prosthetic Devices ◽

Cabot Corporation ◽

Chemical Process Equipment

Abstract Tantalum finds its largest use in the electronics industry, where it is used in filaments, filament supports, and capacitors. Metallurgical grade tantalum is used extensively in chemical process equipment. Tantalum resists corrosion by body fluids and is used in prosthetic devices. Its high melting point gives it utility in vacuum furnace components. It is also used as an alloying element in superalloys. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ta-11. Producer or source: Cabot Corporation.

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