scholarly journals High molecular weight mechanochromic spiropyran main chain copolymers via reproducible microwave-assisted Suzuki polycondensation

2015 ◽  
Vol 6 (19) ◽  
pp. 3694-3707 ◽  
Author(s):  
Lukas Metzler ◽  
Thomas Reichenbach ◽  
Oliver Brügner ◽  
Hartmut Komber ◽  
Florian Lombeck ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Molar Mass ◽  
Main Chain ◽  
Microwave Assisted ◽  
Suzuki Polycondensation

Mechanochromic spiropyran main chain copolymers with high and reproducible molar mass can be made using microwave-assisted Suzuki–Miyaura polycondensation.

Fabrication of Kevlar®-reinforced ultra-high molecular weight polyethylene composite through microwave-assisted compression molding for body armor applications

2020 ◽  
pp. 073168442095944
Author(s):  
Taresh Guleria ◽  
Nishant Verma ◽  
Sunny Zafar ◽  
Vivek Jain
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Energy Absorption ◽  
Compression Molding ◽  
High Energy ◽  
Impact Testing ◽  
Uniaxial Tensile ◽  
Microwave Assisted ◽  
Uniaxial Tensile Testing ◽  
Ultra High Molecular Weight

Kevlar®-reinforced composites are used in high energy absorption applications. In the present work, Kevlar®-reinforced ultra-high molecular weight polyethylene composites were fabricated through microwave-assisted compression molding. The microwave-assisted compression molding parameters were optimized through trial and error method. Analysis of mechanical behavior of composites was accessed through uniaxial tensile testing, flexural testing, impact testing, and nano-indentation. The fractured specimens were observed using scanning electron microscopy. An increment of 92.2% was observed in the ultimate tensile strength of the ultra-high molecular weight polyethylene/Kevlar® composite compared to neat ultra-high molecular weight polyethylene. Flexural properties, impact energy absorption rate, and hardness property of the composite were increased by 27.1%, 91.6%, and 4.77%, respectively, compared to pure ultra-high molecular weight polyethylene. Enhanced mechanical properties may be attributed to unique microwave heating phenomena during microwave-assisted compression molding.

Microwave-assisted polymerization process: A way to design new, high molecular weight poly(arylimidazole)s

Polymer ◽  
2008 ◽  
Vol 49 (24) ◽  
pp. 5209-5214 ◽  
Author(s):  
Edouard Chauveau ◽  
Catherine Marestin ◽  
Vincent Martin ◽  
Régis Mercier
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Polymerization Process ◽  
Microwave Assisted ◽  
High Molecular Weight Poly

Microwave assisted synthesis of high molecular weight polyvinylsilazane via RAFT process

Polymer ◽  
2009 ◽  
Vol 50 (21) ◽  
pp. 5037-5041 ◽  
Author(s):  
Chi Thanh Nguyen ◽  
Quoc Dat Nghiem ◽  
Dong-Pyo Kim ◽  
Jong San Chang ◽  
Young Kyu Hwang
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

Controlled synthesis of unsubstituted high molecular weight poly(para-phenylene) via Suzuki polycondensation-thermal aromatization methodology

2020 ◽  
Vol 11 (14) ◽  
pp. 2550-2558
Author(s):  
Dražen Pavlović ◽  
Shmuel Cohen
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Controlled Synthesis ◽  
Suzuki Polycondensation ◽  
High Molecular Weight Poly

Palladium-catalysed Suzuki polycondensation in conjunction with thermal aromatization of cis- and trans-prepolymer precursors (1a and 1b) has been applied in polyphenylene chemistry, giving access to well-defined high-molecular weight PPP.

Synthesis of High Molecular Weight Amphiphilic Polyphenylenes by Suzuki Polycondensation

2005 ◽  
Vol 206 (16) ◽  
pp. 1610-1618 ◽  
Author(s):  
Ramchandra M. Kandre ◽  
Fabian Kutzner ◽  
Helmut Schlaad ◽  
A. Dieter Schlüter
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Suzuki Polycondensation

scholarly journals Boron–nitrogen main chain analogues of polystyrene: poly(B-aryl)aminoboranes via catalytic dehydrocoupling

2017 ◽  
Vol 53 (85) ◽  
pp. 11701-11704 ◽  
Author(s):  
Diego A. Resendiz-Lara ◽  
Naomi E. Stubbs ◽  
Marius I. Arz ◽  
Natalie E. Pridmore ◽  
Hazel A. Sparkes ◽  
...  
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Main Chain ◽  
Aryl Amine ◽  
Amine Boranes ◽  
Boron Nitrogen

High molecular weight B-arylated polyaminoboranes are obtained via catalytic dehydropolymerisation of B-aryl amine–boranes and represent the first inorganic polystyrene analogues with a B–N main chain.

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